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-rw-r--r--src/nvim/ex_cmds.c6374
1 files changed, 6374 insertions, 0 deletions
diff --git a/src/nvim/ex_cmds.c b/src/nvim/ex_cmds.c
new file mode 100644
index 0000000000..3613a02cb3
--- /dev/null
+++ b/src/nvim/ex_cmds.c
@@ -0,0 +1,6374 @@
+/*
+ * VIM - Vi IMproved by Bram Moolenaar
+ *
+ * Do ":help uganda" in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * ex_cmds.c: some functions for command line commands
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "vim.h"
+#include "version_defs.h"
+#include "ex_cmds.h"
+#include "buffer.h"
+#include "charset.h"
+#include "diff.h"
+#include "digraph.h"
+#include "edit.h"
+#include "eval.h"
+#include "ex_cmds2.h"
+#include "ex_docmd.h"
+#include "ex_eval.h"
+#include "ex_getln.h"
+#include "farsi.h"
+#include "fileio.h"
+#include "fold.h"
+#include "getchar.h"
+#include "indent.h"
+#include "main.h"
+#include "mark.h"
+#include "mbyte.h"
+#include "memline.h"
+#include "message.h"
+#include "misc1.h"
+#include "misc2.h"
+#include "garray.h"
+#include "memory.h"
+#include "move.h"
+#include "normal.h"
+#include "ops.h"
+#include "option.h"
+#include "os_unix.h"
+#include "path.h"
+#include "quickfix.h"
+#include "regexp.h"
+#include "screen.h"
+#include "search.h"
+#include "spell.h"
+#include "syntax.h"
+#include "tag.h"
+#include "term.h"
+#include "ui.h"
+#include "undo.h"
+#include "window.h"
+#include "os/os.h"
+#include "os/shell.h"
+
+static int linelen(int *has_tab);
+static void do_filter(linenr_T line1, linenr_T line2, exarg_T *eap,
+ char_u *cmd, int do_in,
+ int do_out);
+static char_u *viminfo_filename(char_u *);
+static void do_viminfo(FILE *fp_in, FILE *fp_out, int flags);
+static int viminfo_encoding(vir_T *virp);
+static int read_viminfo_up_to_marks(vir_T *virp, int forceit,
+ int writing);
+
+static int check_readonly(int *forceit, buf_T *buf);
+static void delbuf_msg(char_u *name);
+static int help_compare(const void *s1, const void *s2);
+
+/*
+ * ":ascii" and "ga".
+ */
+void do_ascii(exarg_T *eap)
+{
+ int c;
+ int cval;
+ char buf1[20];
+ char buf2[20];
+ char_u buf3[7];
+ int cc[MAX_MCO];
+ int ci = 0;
+ int len;
+
+ if (enc_utf8)
+ c = utfc_ptr2char(ml_get_cursor(), cc);
+ else
+ c = gchar_cursor();
+ if (c == NUL) {
+ MSG("NUL");
+ return;
+ }
+
+ IObuff[0] = NUL;
+ if (!has_mbyte || (enc_dbcs != 0 && c < 0x100) || c < 0x80) {
+ if (c == NL) /* NUL is stored as NL */
+ c = NUL;
+ if (c == CAR && get_fileformat(curbuf) == EOL_MAC)
+ cval = NL; /* NL is stored as CR */
+ else
+ cval = c;
+ if (vim_isprintc_strict(c) && (c < ' '
+ || c > '~'
+ )) {
+ transchar_nonprint(buf3, c);
+ vim_snprintf(buf1, sizeof(buf1), " <%s>", (char *)buf3);
+ } else
+ buf1[0] = NUL;
+ if (c >= 0x80)
+ vim_snprintf(buf2, sizeof(buf2), " <M-%s>",
+ (char *)transchar(c & 0x7f));
+ else
+ buf2[0] = NUL;
+ vim_snprintf((char *)IObuff, IOSIZE,
+ _("<%s>%s%s %d, Hex %02x, Octal %03o"),
+ transchar(c), buf1, buf2, cval, cval, cval);
+ if (enc_utf8)
+ c = cc[ci++];
+ else
+ c = 0;
+ }
+
+ /* Repeat for combining characters. */
+ while (has_mbyte && (c >= 0x100 || (enc_utf8 && c >= 0x80))) {
+ len = (int)STRLEN(IObuff);
+ /* This assumes every multi-byte char is printable... */
+ if (len > 0)
+ IObuff[len++] = ' ';
+ IObuff[len++] = '<';
+ if (enc_utf8 && utf_iscomposing(c)
+# ifdef USE_GUI
+ && !gui.in_use
+# endif
+ )
+ IObuff[len++] = ' '; /* draw composing char on top of a space */
+ len += (*mb_char2bytes)(c, IObuff + len);
+ vim_snprintf((char *)IObuff + len, IOSIZE - len,
+ c < 0x10000 ? _("> %d, Hex %04x, Octal %o")
+ : _("> %d, Hex %08x, Octal %o"), c, c, c);
+ if (ci == MAX_MCO)
+ break;
+ if (enc_utf8)
+ c = cc[ci++];
+ else
+ c = 0;
+ }
+
+ msg(IObuff);
+}
+
+/*
+ * ":left", ":center" and ":right": align text.
+ */
+void ex_align(exarg_T *eap)
+{
+ pos_T save_curpos;
+ int len;
+ int indent = 0;
+ int new_indent;
+ int has_tab;
+ int width;
+
+ if (curwin->w_p_rl) {
+ /* switch left and right aligning */
+ if (eap->cmdidx == CMD_right)
+ eap->cmdidx = CMD_left;
+ else if (eap->cmdidx == CMD_left)
+ eap->cmdidx = CMD_right;
+ }
+
+ width = atoi((char *)eap->arg);
+ save_curpos = curwin->w_cursor;
+ if (eap->cmdidx == CMD_left) { /* width is used for new indent */
+ if (width >= 0)
+ indent = width;
+ } else {
+ /*
+ * if 'textwidth' set, use it
+ * else if 'wrapmargin' set, use it
+ * if invalid value, use 80
+ */
+ if (width <= 0)
+ width = curbuf->b_p_tw;
+ if (width == 0 && curbuf->b_p_wm > 0)
+ width = W_WIDTH(curwin) - curbuf->b_p_wm;
+ if (width <= 0)
+ width = 80;
+ }
+
+ if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL)
+ return;
+
+ for (curwin->w_cursor.lnum = eap->line1;
+ curwin->w_cursor.lnum <= eap->line2; ++curwin->w_cursor.lnum) {
+ if (eap->cmdidx == CMD_left) /* left align */
+ new_indent = indent;
+ else {
+ has_tab = FALSE; /* avoid uninit warnings */
+ len = linelen(eap->cmdidx == CMD_right ? &has_tab
+ : NULL) - get_indent();
+
+ if (len <= 0) /* skip blank lines */
+ continue;
+
+ if (eap->cmdidx == CMD_center)
+ new_indent = (width - len) / 2;
+ else {
+ new_indent = width - len; /* right align */
+
+ /*
+ * Make sure that embedded TABs don't make the text go too far
+ * to the right.
+ */
+ if (has_tab)
+ while (new_indent > 0) {
+ (void)set_indent(new_indent, 0);
+ if (linelen(NULL) <= width) {
+ /*
+ * Now try to move the line as much as possible to
+ * the right. Stop when it moves too far.
+ */
+ do
+ (void)set_indent(++new_indent, 0);
+ while (linelen(NULL) <= width);
+ --new_indent;
+ break;
+ }
+ --new_indent;
+ }
+ }
+ }
+ if (new_indent < 0)
+ new_indent = 0;
+ (void)set_indent(new_indent, 0); /* set indent */
+ }
+ changed_lines(eap->line1, 0, eap->line2 + 1, 0L);
+ curwin->w_cursor = save_curpos;
+ beginline(BL_WHITE | BL_FIX);
+}
+
+/*
+ * Get the length of the current line, excluding trailing white space.
+ */
+static int linelen(int *has_tab)
+{
+ char_u *line;
+ char_u *first;
+ char_u *last;
+ int save;
+ int len;
+
+ /* find the first non-blank character */
+ line = ml_get_curline();
+ first = skipwhite(line);
+
+ /* find the character after the last non-blank character */
+ for (last = first + STRLEN(first);
+ last > first && vim_iswhite(last[-1]); --last)
+ ;
+ save = *last;
+ *last = NUL;
+ len = linetabsize(line); /* get line length */
+ if (has_tab != NULL) /* check for embedded TAB */
+ *has_tab = (vim_strrchr(first, TAB) != NULL);
+ *last = save;
+
+ return len;
+}
+
+/* Buffer for two lines used during sorting. They are allocated to
+ * contain the longest line being sorted. */
+static char_u *sortbuf1;
+static char_u *sortbuf2;
+
+static int sort_ic; /* ignore case */
+static int sort_nr; /* sort on number */
+static int sort_rx; /* sort on regex instead of skipping it */
+
+static int sort_abort; /* flag to indicate if sorting has been interrupted */
+
+/* Struct to store info to be sorted. */
+typedef struct {
+ linenr_T lnum; /* line number */
+ long start_col_nr; /* starting column number or number */
+ long end_col_nr; /* ending column number */
+} sorti_T;
+
+static int
+sort_compare(const void *s1, const void *s2);
+
+static int sort_compare(const void *s1, const void *s2)
+{
+ sorti_T l1 = *(sorti_T *)s1;
+ sorti_T l2 = *(sorti_T *)s2;
+ int result = 0;
+
+ /* If the user interrupts, there's no way to stop qsort() immediately, but
+ * if we return 0 every time, qsort will assume it's done sorting and
+ * exit. */
+ if (sort_abort)
+ return 0;
+ fast_breakcheck();
+ if (got_int)
+ sort_abort = TRUE;
+
+ /* When sorting numbers "start_col_nr" is the number, not the column
+ * number. */
+ if (sort_nr)
+ result = l1.start_col_nr == l2.start_col_nr ? 0
+ : l1.start_col_nr > l2.start_col_nr ? 1 : -1;
+ else {
+ /* We need to copy one line into "sortbuf1", because there is no
+ * guarantee that the first pointer becomes invalid when obtaining the
+ * second one. */
+ STRNCPY(sortbuf1, ml_get(l1.lnum) + l1.start_col_nr,
+ l1.end_col_nr - l1.start_col_nr + 1);
+ sortbuf1[l1.end_col_nr - l1.start_col_nr] = 0;
+ STRNCPY(sortbuf2, ml_get(l2.lnum) + l2.start_col_nr,
+ l2.end_col_nr - l2.start_col_nr + 1);
+ sortbuf2[l2.end_col_nr - l2.start_col_nr] = 0;
+
+ result = sort_ic ? STRICMP(sortbuf1, sortbuf2)
+ : STRCMP(sortbuf1, sortbuf2);
+ }
+
+ /* If two lines have the same value, preserve the original line order. */
+ if (result == 0)
+ return (int)(l1.lnum - l2.lnum);
+ return result;
+}
+
+/*
+ * ":sort".
+ */
+void ex_sort(exarg_T *eap)
+{
+ regmatch_T regmatch;
+ int len;
+ linenr_T lnum;
+ long maxlen = 0;
+ size_t count = (size_t)(eap->line2 - eap->line1 + 1);
+ size_t i;
+ char_u *p;
+ char_u *s;
+ char_u *s2;
+ char_u c; /* temporary character storage */
+ int unique = FALSE;
+ long deleted;
+ colnr_T start_col;
+ colnr_T end_col;
+ int sort_oct; /* sort on octal number */
+ int sort_hex; /* sort on hex number */
+
+ /* Sorting one line is really quick! */
+ if (count <= 1)
+ return;
+
+ if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL)
+ return;
+ sortbuf1 = NULL;
+ sortbuf2 = NULL;
+ regmatch.regprog = NULL;
+ sorti_T *nrs = xmalloc(count * sizeof(sorti_T));
+
+ sort_abort = sort_ic = sort_rx = sort_nr = sort_oct = sort_hex = 0;
+
+ for (p = eap->arg; *p != NUL; ++p) {
+ if (vim_iswhite(*p))
+ ;
+ else if (*p == 'i')
+ sort_ic = TRUE;
+ else if (*p == 'r')
+ sort_rx = TRUE;
+ else if (*p == 'n')
+ sort_nr = 2;
+ else if (*p == 'o')
+ sort_oct = 2;
+ else if (*p == 'x')
+ sort_hex = 2;
+ else if (*p == 'u')
+ unique = TRUE;
+ else if (*p == '"') /* comment start */
+ break;
+ else if (check_nextcmd(p) != NULL) {
+ eap->nextcmd = check_nextcmd(p);
+ break;
+ } else if (!ASCII_ISALPHA(*p) && regmatch.regprog == NULL) {
+ s = skip_regexp(p + 1, *p, TRUE, NULL);
+ if (*s != *p) {
+ EMSG(_(e_invalpat));
+ goto sortend;
+ }
+ *s = NUL;
+ /* Use last search pattern if sort pattern is empty. */
+ if (s == p + 1) {
+ if (last_search_pat() == NULL) {
+ EMSG(_(e_noprevre));
+ goto sortend;
+ }
+ regmatch.regprog = vim_regcomp(last_search_pat(), RE_MAGIC);
+ } else
+ regmatch.regprog = vim_regcomp(p + 1, RE_MAGIC);
+ if (regmatch.regprog == NULL)
+ goto sortend;
+ p = s; /* continue after the regexp */
+ regmatch.rm_ic = p_ic;
+ } else {
+ EMSG2(_(e_invarg2), p);
+ goto sortend;
+ }
+ }
+
+ /* Can only have one of 'n', 'o' and 'x'. */
+ if (sort_nr + sort_oct + sort_hex > 2) {
+ EMSG(_(e_invarg));
+ goto sortend;
+ }
+
+ /* From here on "sort_nr" is used as a flag for any number sorting. */
+ sort_nr += sort_oct + sort_hex;
+
+ /*
+ * Make an array with all line numbers. This avoids having to copy all
+ * the lines into allocated memory.
+ * When sorting on strings "start_col_nr" is the offset in the line, for
+ * numbers sorting it's the number to sort on. This means the pattern
+ * matching and number conversion only has to be done once per line.
+ * Also get the longest line length for allocating "sortbuf".
+ */
+ for (lnum = eap->line1; lnum <= eap->line2; ++lnum) {
+ s = ml_get(lnum);
+ len = (int)STRLEN(s);
+ if (maxlen < len)
+ maxlen = len;
+
+ start_col = 0;
+ end_col = len;
+ if (regmatch.regprog != NULL && vim_regexec(&regmatch, s, 0)) {
+ if (sort_rx) {
+ start_col = (colnr_T)(regmatch.startp[0] - s);
+ end_col = (colnr_T)(regmatch.endp[0] - s);
+ } else
+ start_col = (colnr_T)(regmatch.endp[0] - s);
+ } else if (regmatch.regprog != NULL)
+ end_col = 0;
+
+ if (sort_nr) {
+ /* Make sure vim_str2nr doesn't read any digits past the end
+ * of the match, by temporarily terminating the string there */
+ s2 = s + end_col;
+ c = *s2;
+ *s2 = NUL;
+ /* Sorting on number: Store the number itself. */
+ p = s + start_col;
+ if (sort_hex)
+ s = skiptohex(p);
+ else
+ s = skiptodigit(p);
+ if (s > p && s[-1] == '-')
+ --s; /* include preceding negative sign */
+ if (*s == NUL)
+ /* empty line should sort before any number */
+ nrs[lnum - eap->line1].start_col_nr = -MAXLNUM;
+ else
+ vim_str2nr(s, NULL, NULL, sort_oct, sort_hex,
+ &nrs[lnum - eap->line1].start_col_nr, NULL);
+ *s2 = c;
+ } else {
+ /* Store the column to sort at. */
+ nrs[lnum - eap->line1].start_col_nr = start_col;
+ nrs[lnum - eap->line1].end_col_nr = end_col;
+ }
+
+ nrs[lnum - eap->line1].lnum = lnum;
+
+ if (regmatch.regprog != NULL)
+ fast_breakcheck();
+ if (got_int)
+ goto sortend;
+ }
+
+ /* Allocate a buffer that can hold the longest line. */
+ sortbuf1 = xmalloc(maxlen + 1);
+ sortbuf2 = xmalloc(maxlen + 1);
+
+ /* Sort the array of line numbers. Note: can't be interrupted! */
+ qsort((void *)nrs, count, sizeof(sorti_T), sort_compare);
+
+ if (sort_abort)
+ goto sortend;
+
+ /* Insert the lines in the sorted order below the last one. */
+ lnum = eap->line2;
+ for (i = 0; i < count; ++i) {
+ s = ml_get(nrs[eap->forceit ? count - i - 1 : i].lnum);
+ if (!unique || i == 0
+ || (sort_ic ? STRICMP(s, sortbuf1) : STRCMP(s, sortbuf1)) != 0) {
+ if (ml_append(lnum++, s, (colnr_T)0, FALSE) == FAIL)
+ break;
+ if (unique)
+ STRCPY(sortbuf1, s);
+ }
+ fast_breakcheck();
+ if (got_int)
+ goto sortend;
+ }
+
+ /* delete the original lines if appending worked */
+ if (i == count)
+ for (i = 0; i < count; ++i)
+ ml_delete(eap->line1, FALSE);
+ else
+ count = 0;
+
+ /* Adjust marks for deleted (or added) lines and prepare for displaying. */
+ deleted = (long)(count - (lnum - eap->line2));
+ if (deleted > 0)
+ mark_adjust(eap->line2 - deleted, eap->line2, (long)MAXLNUM, -deleted);
+ else if (deleted < 0)
+ mark_adjust(eap->line2, MAXLNUM, -deleted, 0L);
+ changed_lines(eap->line1, 0, eap->line2 + 1, -deleted);
+
+ curwin->w_cursor.lnum = eap->line1;
+ beginline(BL_WHITE | BL_FIX);
+
+sortend:
+ free(nrs);
+ free(sortbuf1);
+ free(sortbuf2);
+ vim_regfree(regmatch.regprog);
+ if (got_int)
+ EMSG(_(e_interr));
+}
+
+/*
+ * ":retab".
+ */
+void ex_retab(exarg_T *eap)
+{
+ linenr_T lnum;
+ int got_tab = FALSE;
+ long num_spaces = 0;
+ long num_tabs;
+ long len;
+ long col;
+ long vcol;
+ long start_col = 0; /* For start of white-space string */
+ long start_vcol = 0; /* For start of white-space string */
+ int temp;
+ long old_len;
+ char_u *ptr;
+ char_u *new_line = (char_u *)1; /* init to non-NULL */
+ int did_undo; /* called u_save for current line */
+ int new_ts;
+ int save_list;
+ linenr_T first_line = 0; /* first changed line */
+ linenr_T last_line = 0; /* last changed line */
+
+ save_list = curwin->w_p_list;
+ curwin->w_p_list = 0; /* don't want list mode here */
+
+ new_ts = getdigits(&(eap->arg));
+ if (new_ts < 0) {
+ EMSG(_(e_positive));
+ return;
+ }
+ if (new_ts == 0)
+ new_ts = curbuf->b_p_ts;
+ for (lnum = eap->line1; !got_int && lnum <= eap->line2; ++lnum) {
+ ptr = ml_get(lnum);
+ col = 0;
+ vcol = 0;
+ did_undo = FALSE;
+ for (;; ) {
+ if (vim_iswhite(ptr[col])) {
+ if (!got_tab && num_spaces == 0) {
+ /* First consecutive white-space */
+ start_vcol = vcol;
+ start_col = col;
+ }
+ if (ptr[col] == ' ')
+ num_spaces++;
+ else
+ got_tab = TRUE;
+ } else {
+ if (got_tab || (eap->forceit && num_spaces > 1)) {
+ /* Retabulate this string of white-space */
+
+ /* len is virtual length of white string */
+ len = num_spaces = vcol - start_vcol;
+ num_tabs = 0;
+ if (!curbuf->b_p_et) {
+ temp = new_ts - (start_vcol % new_ts);
+ if (num_spaces >= temp) {
+ num_spaces -= temp;
+ num_tabs++;
+ }
+ num_tabs += num_spaces / new_ts;
+ num_spaces -= (num_spaces / new_ts) * new_ts;
+ }
+ if (curbuf->b_p_et || got_tab ||
+ (num_spaces + num_tabs < len)) {
+ if (did_undo == FALSE) {
+ did_undo = TRUE;
+ if (u_save((linenr_T)(lnum - 1),
+ (linenr_T)(lnum + 1)) == FAIL) {
+ new_line = NULL; /* flag out-of-memory */
+ break;
+ }
+ }
+
+ /* len is actual number of white characters used */
+ len = num_spaces + num_tabs;
+ old_len = (long)STRLEN(ptr);
+ new_line = xmalloc(old_len - col + start_col + len + 1);
+
+ if (start_col > 0)
+ memmove(new_line, ptr, (size_t)start_col);
+ memmove(new_line + start_col + len,
+ ptr + col, (size_t)(old_len - col + 1));
+ ptr = new_line + start_col;
+ for (col = 0; col < len; col++)
+ ptr[col] = (col < num_tabs) ? '\t' : ' ';
+ ml_replace(lnum, new_line, FALSE);
+ if (first_line == 0)
+ first_line = lnum;
+ last_line = lnum;
+ ptr = new_line;
+ col = start_col + len;
+ }
+ }
+ got_tab = FALSE;
+ num_spaces = 0;
+ }
+ if (ptr[col] == NUL)
+ break;
+ vcol += chartabsize(ptr + col, (colnr_T)vcol);
+ if (has_mbyte)
+ col += (*mb_ptr2len)(ptr + col);
+ else
+ ++col;
+ }
+ if (new_line == NULL) /* out of memory */
+ break;
+ line_breakcheck();
+ }
+ if (got_int)
+ EMSG(_(e_interr));
+
+ if (curbuf->b_p_ts != new_ts)
+ redraw_curbuf_later(NOT_VALID);
+ if (first_line != 0)
+ changed_lines(first_line, 0, last_line + 1, 0L);
+
+ curwin->w_p_list = save_list; /* restore 'list' */
+
+ curbuf->b_p_ts = new_ts;
+ coladvance(curwin->w_curswant);
+
+ u_clearline();
+}
+
+/*
+ * :move command - move lines line1-line2 to line dest
+ *
+ * return FAIL for failure, OK otherwise
+ */
+int do_move(linenr_T line1, linenr_T line2, linenr_T dest)
+{
+ char_u *str;
+ linenr_T l;
+ linenr_T extra; /* Num lines added before line1 */
+ linenr_T num_lines; /* Num lines moved */
+ linenr_T last_line; /* Last line in file after adding new text */
+
+ if (dest >= line1 && dest < line2) {
+ EMSG(_("E134: Move lines into themselves"));
+ return FAIL;
+ }
+
+ num_lines = line2 - line1 + 1;
+
+ /*
+ * First we copy the old text to its new location -- webb
+ * Also copy the flag that ":global" command uses.
+ */
+ if (u_save(dest, dest + 1) == FAIL)
+ return FAIL;
+ for (extra = 0, l = line1; l <= line2; l++) {
+ str = vim_strsave(ml_get(l + extra));
+ if (str != NULL) {
+ ml_append(dest + l - line1, str, (colnr_T)0, FALSE);
+ free(str);
+ if (dest < line1)
+ extra++;
+ }
+ }
+
+ /*
+ * Now we must be careful adjusting our marks so that we don't overlap our
+ * mark_adjust() calls.
+ *
+ * We adjust the marks within the old text so that they refer to the
+ * last lines of the file (temporarily), because we know no other marks
+ * will be set there since these line numbers did not exist until we added
+ * our new lines.
+ *
+ * Then we adjust the marks on lines between the old and new text positions
+ * (either forwards or backwards).
+ *
+ * And Finally we adjust the marks we put at the end of the file back to
+ * their final destination at the new text position -- webb
+ */
+ last_line = curbuf->b_ml.ml_line_count;
+ mark_adjust(line1, line2, last_line - line2, 0L);
+ changed_lines(last_line - num_lines + 1, 0, last_line + 1, num_lines);
+ if (dest >= line2) {
+ mark_adjust(line2 + 1, dest, -num_lines, 0L);
+ curbuf->b_op_start.lnum = dest - num_lines + 1;
+ curbuf->b_op_end.lnum = dest;
+ } else {
+ mark_adjust(dest + 1, line1 - 1, num_lines, 0L);
+ curbuf->b_op_start.lnum = dest + 1;
+ curbuf->b_op_end.lnum = dest + num_lines;
+ }
+ curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
+ mark_adjust(last_line - num_lines + 1, last_line,
+ -(last_line - dest - extra), 0L);
+ changed_lines(last_line - num_lines + 1, 0, last_line + 1, -extra);
+
+ /*
+ * Now we delete the original text -- webb
+ */
+ if (u_save(line1 + extra - 1, line2 + extra + 1) == FAIL)
+ return FAIL;
+
+ for (l = line1; l <= line2; l++)
+ ml_delete(line1 + extra, TRUE);
+
+ if (!global_busy && num_lines > p_report) {
+ if (num_lines == 1)
+ MSG(_("1 line moved"));
+ else
+ smsg((char_u *)_("%" PRId64 " lines moved"), (int64_t)num_lines);
+ }
+
+ /*
+ * Leave the cursor on the last of the moved lines.
+ */
+ if (dest >= line1)
+ curwin->w_cursor.lnum = dest;
+ else
+ curwin->w_cursor.lnum = dest + (line2 - line1) + 1;
+
+ if (line1 < dest) {
+ dest += num_lines + 1;
+ last_line = curbuf->b_ml.ml_line_count;
+ if (dest > last_line + 1)
+ dest = last_line + 1;
+ changed_lines(line1, 0, dest, 0L);
+ } else
+ changed_lines(dest + 1, 0, line1 + num_lines, 0L);
+
+ return OK;
+}
+
+/*
+ * ":copy"
+ */
+void ex_copy(linenr_T line1, linenr_T line2, linenr_T n)
+{
+ linenr_T count;
+ char_u *p;
+
+ count = line2 - line1 + 1;
+ curbuf->b_op_start.lnum = n + 1;
+ curbuf->b_op_end.lnum = n + count;
+ curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
+
+ /*
+ * there are three situations:
+ * 1. destination is above line1
+ * 2. destination is between line1 and line2
+ * 3. destination is below line2
+ *
+ * n = destination (when starting)
+ * curwin->w_cursor.lnum = destination (while copying)
+ * line1 = start of source (while copying)
+ * line2 = end of source (while copying)
+ */
+ if (u_save(n, n + 1) == FAIL)
+ return;
+
+ curwin->w_cursor.lnum = n;
+ while (line1 <= line2) {
+ /* need to use vim_strsave() because the line will be unlocked within
+ * ml_append() */
+ p = vim_strsave(ml_get(line1));
+ if (p != NULL) {
+ ml_append(curwin->w_cursor.lnum, p, (colnr_T)0, FALSE);
+ free(p);
+ }
+ /* situation 2: skip already copied lines */
+ if (line1 == n)
+ line1 = curwin->w_cursor.lnum;
+ ++line1;
+ if (curwin->w_cursor.lnum < line1)
+ ++line1;
+ if (curwin->w_cursor.lnum < line2)
+ ++line2;
+ ++curwin->w_cursor.lnum;
+ }
+
+ appended_lines_mark(n, count);
+
+ msgmore((long)count);
+}
+
+static char_u *prevcmd = NULL; /* the previous command */
+
+#if defined(EXITFREE) || defined(PROTO)
+void free_prev_shellcmd(void)
+{
+ free(prevcmd);
+}
+
+#endif
+
+/*
+ * Handle the ":!cmd" command. Also for ":r !cmd" and ":w !cmd"
+ * Bangs in the argument are replaced with the previously entered command.
+ * Remember the argument.
+ */
+void do_bang(int addr_count, exarg_T *eap, int forceit, int do_in, int do_out)
+{
+ char_u *arg = eap->arg; /* command */
+ linenr_T line1 = eap->line1; /* start of range */
+ linenr_T line2 = eap->line2; /* end of range */
+ char_u *newcmd = NULL; /* the new command */
+ int free_newcmd = FALSE; /* need to free() newcmd */
+ int ins_prevcmd;
+ char_u *t;
+ char_u *p;
+ char_u *trailarg;
+ int len;
+ int scroll_save = msg_scroll;
+
+ /*
+ * Disallow shell commands for "rvim".
+ * Disallow shell commands from .exrc and .vimrc in current directory for
+ * security reasons.
+ */
+ if (check_restricted() || check_secure())
+ return;
+
+ if (addr_count == 0) { /* :! */
+ msg_scroll = FALSE; /* don't scroll here */
+ autowrite_all();
+ msg_scroll = scroll_save;
+ }
+
+ /*
+ * Try to find an embedded bang, like in :!<cmd> ! [args]
+ * (:!! is indicated by the 'forceit' variable)
+ */
+ ins_prevcmd = forceit;
+ trailarg = arg;
+ do {
+ len = (int)STRLEN(trailarg) + 1;
+ if (newcmd != NULL)
+ len += (int)STRLEN(newcmd);
+ if (ins_prevcmd) {
+ if (prevcmd == NULL) {
+ EMSG(_(e_noprev));
+ free(newcmd);
+ return;
+ }
+ len += (int)STRLEN(prevcmd);
+ }
+ t = xmalloc(len);
+ *t = NUL;
+ if (newcmd != NULL)
+ STRCAT(t, newcmd);
+ if (ins_prevcmd)
+ STRCAT(t, prevcmd);
+ p = t + STRLEN(t);
+ STRCAT(t, trailarg);
+ free(newcmd);
+ newcmd = t;
+
+ /*
+ * Scan the rest of the argument for '!', which is replaced by the
+ * previous command. "\!" is replaced by "!" (this is vi compatible).
+ */
+ trailarg = NULL;
+ while (*p) {
+ if (*p == '!') {
+ if (p > newcmd && p[-1] == '\\')
+ STRMOVE(p - 1, p);
+ else {
+ trailarg = p;
+ *trailarg++ = NUL;
+ ins_prevcmd = TRUE;
+ break;
+ }
+ }
+ ++p;
+ }
+ } while (trailarg != NULL);
+
+ free(prevcmd);
+ prevcmd = newcmd;
+
+ if (bangredo) { /* put cmd in redo buffer for ! command */
+ /* If % or # appears in the command, it must have been escaped.
+ * Reescape them, so that redoing them does not substitute them by the
+ * buffername. */
+ char_u *cmd = vim_strsave_escaped(prevcmd, (char_u *)"%#");
+
+ AppendToRedobuffLit(cmd, -1);
+ free(cmd);
+ AppendToRedobuff((char_u *)"\n");
+ bangredo = FALSE;
+ }
+ /*
+ * Add quotes around the command, for shells that need them.
+ */
+ if (*p_shq != NUL) {
+ newcmd = xmalloc(STRLEN(prevcmd) + 2 * STRLEN(p_shq) + 1);
+ STRCPY(newcmd, p_shq);
+ STRCAT(newcmd, prevcmd);
+ STRCAT(newcmd, p_shq);
+ free_newcmd = TRUE;
+ }
+ if (addr_count == 0) { /* :! */
+ /* echo the command */
+ msg_start();
+ msg_putchar(':');
+ msg_putchar('!');
+ msg_outtrans(newcmd);
+ msg_clr_eos();
+ windgoto(msg_row, msg_col);
+
+ do_shell(newcmd, 0);
+ } else { /* :range! */
+ /* Careful: This may recursively call do_bang() again! (because of
+ * autocommands) */
+ do_filter(line1, line2, eap, newcmd, do_in, do_out);
+ apply_autocmds(EVENT_SHELLFILTERPOST, NULL, NULL, FALSE, curbuf);
+ }
+ if (free_newcmd)
+ free(newcmd);
+}
+
+/*
+ * do_filter: filter lines through a command given by the user
+ *
+ * We mostly use temp files and the call_shell() routine here. This would
+ * normally be done using pipes on a UNIX machine, but this is more portable
+ * to non-unix machines. The call_shell() routine needs to be able
+ * to deal with redirection somehow, and should handle things like looking
+ * at the PATH env. variable, and adding reasonable extensions to the
+ * command name given by the user. All reasonable versions of call_shell()
+ * do this.
+ * Alternatively, if on Unix and redirecting input or output, but not both,
+ * and the 'shelltemp' option isn't set, use pipes.
+ * We use input redirection if do_in is TRUE.
+ * We use output redirection if do_out is TRUE.
+ */
+static void
+do_filter (
+ linenr_T line1,
+ linenr_T line2,
+ exarg_T *eap, /* for forced 'ff' and 'fenc' */
+ char_u *cmd,
+ int do_in,
+ int do_out
+)
+{
+ char_u *itmp = NULL;
+ char_u *otmp = NULL;
+ linenr_T linecount;
+ linenr_T read_linecount;
+ pos_T cursor_save;
+ char_u *cmd_buf;
+ buf_T *old_curbuf = curbuf;
+ int shell_flags = 0;
+
+ if (*cmd == NUL) /* no filter command */
+ return;
+
+
+ cursor_save = curwin->w_cursor;
+ linecount = line2 - line1 + 1;
+ curwin->w_cursor.lnum = line1;
+ curwin->w_cursor.col = 0;
+ changed_line_abv_curs();
+ invalidate_botline();
+
+ /*
+ * When using temp files:
+ * 1. * Form temp file names
+ * 2. * Write the lines to a temp file
+ * 3. Run the filter command on the temp file
+ * 4. * Read the output of the command into the buffer
+ * 5. * Delete the original lines to be filtered
+ * 6. * Remove the temp files
+ *
+ * When writing the input with a pipe or when catching the output with a
+ * pipe only need to do 3.
+ */
+
+ if (do_out)
+ shell_flags |= kShellOptDoOut;
+
+ if (!do_in && do_out && !p_stmp) {
+ // Use a pipe to fetch stdout of the command, do not use a temp file.
+ shell_flags |= kShellOptRead;
+ curwin->w_cursor.lnum = line2;
+ } else if (do_in && !do_out && !p_stmp) {
+ // Use a pipe to write stdin of the command, do not use a temp file.
+ shell_flags |= kShellOptWrite;
+ curbuf->b_op_start.lnum = line1;
+ curbuf->b_op_end.lnum = line2;
+ } else if (do_in && do_out && !p_stmp) {
+ // Use a pipe to write stdin and fetch stdout of the command, do not
+ // use a temp file.
+ shell_flags |= kShellOptRead | kShellOptWrite;
+ curbuf->b_op_start.lnum = line1;
+ curbuf->b_op_end.lnum = line2;
+ curwin->w_cursor.lnum = line2;
+ } else if ((do_in && (itmp = vim_tempname('i')) == NULL)
+ || (do_out && (otmp = vim_tempname('o')) == NULL)) {
+ EMSG(_(e_notmp));
+ goto filterend;
+ }
+
+ /*
+ * The writing and reading of temp files will not be shown.
+ * Vi also doesn't do this and the messages are not very informative.
+ */
+ ++no_wait_return; /* don't call wait_return() while busy */
+ if (itmp != NULL && buf_write(curbuf, itmp, NULL, line1, line2, eap,
+ FALSE, FALSE, FALSE, TRUE) == FAIL) {
+ msg_putchar('\n'); /* keep message from buf_write() */
+ --no_wait_return;
+ if (!aborting())
+ (void)EMSG2(_(e_notcreate), itmp); /* will call wait_return */
+ goto filterend;
+ }
+ if (curbuf != old_curbuf)
+ goto filterend;
+
+ if (!do_out)
+ msg_putchar('\n');
+
+ /* Create the shell command in allocated memory. */
+ cmd_buf = make_filter_cmd(cmd, itmp, otmp);
+
+ windgoto((int)Rows - 1, 0);
+ cursor_on();
+
+ /*
+ * When not redirecting the output the command can write anything to the
+ * screen. If 'shellredir' is equal to ">", screen may be messed up by
+ * stderr output of external command. Clear the screen later.
+ * If do_in is FALSE, this could be something like ":r !cat", which may
+ * also mess up the screen, clear it later.
+ */
+ if (!do_out || STRCMP(p_srr, ">") == 0 || !do_in)
+ redraw_later_clear();
+
+ if (do_out) {
+ if (u_save((linenr_T)(line2), (linenr_T)(line2 + 1)) == FAIL) {
+ free(cmd_buf);
+ goto error;
+ }
+ redraw_curbuf_later(VALID);
+ }
+ read_linecount = curbuf->b_ml.ml_line_count;
+
+ /*
+ * When call_shell() fails wait_return() is called to give the user a
+ * chance to read the error messages. Otherwise errors are ignored, so you
+ * can see the error messages from the command that appear on stdout; use
+ * 'u' to fix the text
+ * Switch to cooked mode when not redirecting stdin, avoids that something
+ * like ":r !cat" hangs.
+ * Pass on the kShellDoOut flag when the output is being redirected.
+ */
+ if (call_shell(
+ cmd_buf,
+ kShellOptFilter | kShellOptCooked | shell_flags,
+ NULL
+ )) {
+ redraw_later_clear();
+ wait_return(FALSE);
+ }
+ free(cmd_buf);
+
+ did_check_timestamps = FALSE;
+ need_check_timestamps = TRUE;
+
+ /* When interrupting the shell command, it may still have produced some
+ * useful output. Reset got_int here, so that readfile() won't cancel
+ * reading. */
+ ui_breakcheck();
+ got_int = FALSE;
+
+ if (do_out) {
+ if (otmp != NULL) {
+ if (readfile(otmp, NULL, line2, (linenr_T)0, (linenr_T)MAXLNUM,
+ eap, READ_FILTER) == FAIL) {
+ if (!aborting()) {
+ msg_putchar('\n');
+ EMSG2(_(e_notread), otmp);
+ }
+ goto error;
+ }
+ if (curbuf != old_curbuf)
+ goto filterend;
+ }
+
+ read_linecount = curbuf->b_ml.ml_line_count - read_linecount;
+
+ if (shell_flags & kShellOptRead) {
+ curbuf->b_op_start.lnum = line2 + 1;
+ curbuf->b_op_end.lnum = curwin->w_cursor.lnum;
+ appended_lines_mark(line2, read_linecount);
+ }
+
+ if (do_in) {
+ if (cmdmod.keepmarks || vim_strchr(p_cpo, CPO_REMMARK) == NULL) {
+ if (read_linecount >= linecount)
+ /* move all marks from old lines to new lines */
+ mark_adjust(line1, line2, linecount, 0L);
+ else {
+ /* move marks from old lines to new lines, delete marks
+ * that are in deleted lines */
+ mark_adjust(line1, line1 + read_linecount - 1,
+ linecount, 0L);
+ mark_adjust(line1 + read_linecount, line2, MAXLNUM, 0L);
+ }
+ }
+
+ /*
+ * Put cursor on first filtered line for ":range!cmd".
+ * Adjust '[ and '] (set by buf_write()).
+ */
+ curwin->w_cursor.lnum = line1;
+ del_lines(linecount, TRUE);
+ curbuf->b_op_start.lnum -= linecount; /* adjust '[ */
+ curbuf->b_op_end.lnum -= linecount; /* adjust '] */
+ write_lnum_adjust(-linecount); /* adjust last line
+ for next write */
+ foldUpdate(curwin, curbuf->b_op_start.lnum, curbuf->b_op_end.lnum);
+ } else {
+ /*
+ * Put cursor on last new line for ":r !cmd".
+ */
+ linecount = curbuf->b_op_end.lnum - curbuf->b_op_start.lnum + 1;
+ curwin->w_cursor.lnum = curbuf->b_op_end.lnum;
+ }
+
+ beginline(BL_WHITE | BL_FIX); /* cursor on first non-blank */
+ --no_wait_return;
+
+ if (linecount > p_report) {
+ if (do_in) {
+ vim_snprintf((char *)msg_buf, sizeof(msg_buf),
+ _("%" PRId64 " lines filtered"), (int64_t)linecount);
+ if (msg(msg_buf) && !msg_scroll)
+ /* save message to display it after redraw */
+ set_keep_msg(msg_buf, 0);
+ } else
+ msgmore((long)linecount);
+ }
+ } else {
+error:
+ /* put cursor back in same position for ":w !cmd" */
+ curwin->w_cursor = cursor_save;
+ --no_wait_return;
+ wait_return(FALSE);
+ }
+
+filterend:
+
+ if (curbuf != old_curbuf) {
+ --no_wait_return;
+ EMSG(_("E135: *Filter* Autocommands must not change current buffer"));
+ }
+ if (itmp != NULL)
+ os_remove((char *)itmp);
+ if (otmp != NULL)
+ os_remove((char *)otmp);
+ free(itmp);
+ free(otmp);
+}
+
+/*
+ * Call a shell to execute a command.
+ * When "cmd" is NULL start an interactive shell.
+ */
+void
+do_shell (
+ char_u *cmd,
+ int flags /* may be SHELL_DOOUT when output is redirected */
+)
+{
+ buf_T *buf;
+ int save_nwr;
+
+ /*
+ * Disallow shell commands for "rvim".
+ * Disallow shell commands from .exrc and .vimrc in current directory for
+ * security reasons.
+ */
+ if (check_restricted() || check_secure()) {
+ msg_end();
+ return;
+ }
+
+
+ /*
+ * For autocommands we want to get the output on the current screen, to
+ * avoid having to type return below.
+ */
+ msg_putchar('\r'); /* put cursor at start of line */
+ if (!autocmd_busy) {
+ stoptermcap();
+ }
+ msg_putchar('\n'); /* may shift screen one line up */
+
+ /* warning message before calling the shell */
+ if (p_warn
+ && !autocmd_busy
+ && msg_silent == 0)
+ for (buf = firstbuf; buf; buf = buf->b_next)
+ if (bufIsChanged(buf)) {
+ MSG_PUTS(_("[No write since last change]\n"));
+ break;
+ }
+
+ /* This windgoto is required for when the '\n' resulted in a "delete line
+ * 1" command to the terminal. */
+ if (!swapping_screen())
+ windgoto(msg_row, msg_col);
+ cursor_on();
+ (void)call_shell(cmd, kShellOptCooked | flags, NULL);
+ did_check_timestamps = FALSE;
+ need_check_timestamps = TRUE;
+
+ /*
+ * put the message cursor at the end of the screen, avoids wait_return()
+ * to overwrite the text that the external command showed
+ */
+ if (!swapping_screen()) {
+ msg_row = Rows - 1;
+ msg_col = 0;
+ }
+
+ if (autocmd_busy) {
+ if (msg_silent == 0)
+ redraw_later_clear();
+ } else {
+ /*
+ * For ":sh" there is no need to call wait_return(), just redraw.
+ * Also for the Win32 GUI (the output is in a console window).
+ * Otherwise there is probably text on the screen that the user wants
+ * to read before redrawing, so call wait_return().
+ */
+ if (cmd == NULL
+ ) {
+ if (msg_silent == 0)
+ redraw_later_clear();
+ need_wait_return = FALSE;
+ } else {
+ /*
+ * If we switch screens when starttermcap() is called, we really
+ * want to wait for "hit return to continue".
+ */
+ save_nwr = no_wait_return;
+ if (swapping_screen())
+ no_wait_return = FALSE;
+ wait_return(msg_silent == 0);
+ no_wait_return = save_nwr;
+ }
+
+ starttermcap(); /* start termcap if not done by wait_return() */
+
+ /*
+ * In an Amiga window redrawing is caused by asking the window size.
+ * If we got an interrupt this will not work. The chance that the
+ * window size is wrong is very small, but we need to redraw the
+ * screen. Don't do this if ':' hit in wait_return(). THIS IS UGLY
+ * but it saves an extra redraw.
+ */
+ }
+
+ /* display any error messages now */
+ display_errors();
+
+ apply_autocmds(EVENT_SHELLCMDPOST, NULL, NULL, FALSE, curbuf);
+}
+
+/*
+ * Create a shell command from a command string, input redirection file and
+ * output redirection file.
+ * Returns an allocated string with the shell command.
+ */
+char_u *
+make_filter_cmd (
+ char_u *cmd, /* command */
+ char_u *itmp, /* NULL or name of input file */
+ char_u *otmp /* NULL or name of output file */
+)
+{
+ size_t len = STRLEN(cmd) + 3; /* "()" + NUL */
+ if (itmp != NULL)
+ len += STRLEN(itmp) + 9; /* " { < " + " } " */
+ if (otmp != NULL)
+ len += STRLEN(otmp) + STRLEN(p_srr) + 2; /* " " */
+ char_u *buf = xmalloc(len);
+
+#if defined(UNIX)
+ /*
+ * Put braces around the command (for concatenated commands) when
+ * redirecting input and/or output.
+ */
+ if (itmp != NULL || otmp != NULL)
+ vim_snprintf((char *)buf, len, "(%s)", (char *)cmd);
+ else
+ STRCPY(buf, cmd);
+ if (itmp != NULL) {
+ STRCAT(buf, " < ");
+ STRCAT(buf, itmp);
+ }
+#else
+ /*
+ * for shells that don't understand braces around commands, at least allow
+ * the use of commands in a pipe.
+ */
+ STRCPY(buf, cmd);
+ if (itmp != NULL) {
+ char_u *p;
+
+ /*
+ * If there is a pipe, we have to put the '<' in front of it.
+ * Don't do this when 'shellquote' is not empty, otherwise the
+ * redirection would be inside the quotes.
+ */
+ if (*p_shq == NUL) {
+ p = vim_strchr(buf, '|');
+ if (p != NULL)
+ *p = NUL;
+ }
+ STRCAT(buf, " < ");
+ STRCAT(buf, itmp);
+ if (*p_shq == NUL) {
+ p = vim_strchr(cmd, '|');
+ if (p != NULL) {
+ STRCAT(buf, " "); /* insert a space before the '|' for DOS */
+ STRCAT(buf, p);
+ }
+ }
+ }
+#endif
+ if (otmp != NULL)
+ append_redir(buf, (int)len, p_srr, otmp);
+
+ return buf;
+}
+
+/*
+ * Append output redirection for file "fname" to the end of string buffer
+ * "buf[buflen]"
+ * Works with the 'shellredir' and 'shellpipe' options.
+ * The caller should make sure that there is enough room:
+ * STRLEN(opt) + STRLEN(fname) + 3
+ */
+void append_redir(char_u *buf, int buflen, char_u *opt, char_u *fname)
+{
+ char_u *p;
+ char_u *end;
+
+ end = buf + STRLEN(buf);
+ /* find "%s" */
+ for (p = opt; (p = vim_strchr(p, '%')) != NULL; ++p) {
+ if (p[1] == 's') /* found %s */
+ break;
+ if (p[1] == '%') /* skip %% */
+ ++p;
+ }
+ if (p != NULL) {
+ *end = ' '; /* not really needed? Not with sh, ksh or bash */
+ vim_snprintf((char *)end + 1, (size_t)(buflen - (end + 1 - buf)),
+ (char *)opt, (char *)fname);
+ } else
+ vim_snprintf((char *)end, (size_t)(buflen - (end - buf)),
+ " %s %s",
+ (char *)opt, (char *)fname);
+}
+
+
+static int no_viminfo(void);
+static int viminfo_errcnt;
+
+static int no_viminfo(void)
+{
+ /* "vim -i NONE" does not read or write a viminfo file */
+ return use_viminfo != NULL && STRCMP(use_viminfo, "NONE") == 0;
+}
+
+/*
+ * Report an error for reading a viminfo file.
+ * Count the number of errors. When there are more than 10, return TRUE.
+ */
+int viminfo_error(char *errnum, char *message, char_u *line)
+{
+ vim_snprintf((char *)IObuff, IOSIZE, _("%sviminfo: %s in line: "),
+ errnum, message);
+ STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff) - 1);
+ if (IObuff[STRLEN(IObuff) - 1] == '\n')
+ IObuff[STRLEN(IObuff) - 1] = NUL;
+ emsg(IObuff);
+ if (++viminfo_errcnt >= 10) {
+ EMSG(_("E136: viminfo: Too many errors, skipping rest of file"));
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * read_viminfo() -- Read the viminfo file. Registers etc. which are already
+ * set are not over-written unless "flags" includes VIF_FORCEIT. -- webb
+ */
+int
+read_viminfo (
+ char_u *file, /* file name or NULL to use default name */
+ int flags /* VIF_WANT_INFO et al. */
+)
+{
+ FILE *fp;
+ char_u *fname;
+
+ if (no_viminfo())
+ return FAIL;
+
+ fname = viminfo_filename(file); /* get file name in allocated buffer */
+ if (fname == NULL)
+ return FAIL;
+ fp = mch_fopen((char *)fname, READBIN);
+
+ if (p_verbose > 0) {
+ verbose_enter();
+ smsg((char_u *)_("Reading viminfo file \"%s\"%s%s%s"),
+ fname,
+ (flags & VIF_WANT_INFO) ? _(" info") : "",
+ (flags & VIF_WANT_MARKS) ? _(" marks") : "",
+ (flags & VIF_GET_OLDFILES) ? _(" oldfiles") : "",
+ fp == NULL ? _(" FAILED") : "");
+ verbose_leave();
+ }
+
+ free(fname);
+ if (fp == NULL)
+ return FAIL;
+
+ viminfo_errcnt = 0;
+ do_viminfo(fp, NULL, flags);
+
+ fclose(fp);
+ return OK;
+}
+
+/*
+ * Write the viminfo file. The old one is read in first so that effectively a
+ * merge of current info and old info is done. This allows multiple vims to
+ * run simultaneously, without losing any marks etc.
+ * If "forceit" is TRUE, then the old file is not read in, and only internal
+ * info is written to the file.
+ */
+void write_viminfo(char_u *file, int forceit)
+{
+ char_u *fname;
+ FILE *fp_in = NULL; /* input viminfo file, if any */
+ FILE *fp_out = NULL; /* output viminfo file */
+ char_u *tempname = NULL; /* name of temp viminfo file */
+ char_u *wp;
+#if defined(UNIX)
+ mode_t umask_save;
+#endif
+
+ if (no_viminfo())
+ return;
+
+ fname = viminfo_filename(file); /* may set to default if NULL */
+ if (fname == NULL)
+ return;
+
+ fp_in = mch_fopen((char *)fname, READBIN);
+ if (fp_in == NULL) {
+ /* if it does exist, but we can't read it, don't try writing */
+ if (os_file_exists(fname))
+ goto end;
+#if defined(UNIX)
+ /*
+ * For Unix we create the .viminfo non-accessible for others,
+ * because it may contain text from non-accessible documents.
+ */
+ umask_save = umask(077);
+#endif
+ fp_out = mch_fopen((char *)fname, WRITEBIN);
+#if defined(UNIX)
+ (void)umask(umask_save);
+#endif
+ } else {
+ /*
+ * There is an existing viminfo file. Create a temporary file to
+ * write the new viminfo into, in the same directory as the
+ * existing viminfo file, which will be renamed later.
+ */
+#ifdef UNIX
+ /*
+ * For Unix we check the owner of the file. It's not very nice to
+ * overwrite a user's viminfo file after a "su root", with a
+ * viminfo file that the user can't read.
+ */
+
+ FileInfo old_info; // FileInfo of existing viminfo file
+ if (os_get_file_info((char *)fname, &old_info)
+ && getuid() != ROOT_UID
+ && !(old_info.stat.st_uid == getuid()
+ ? (old_info.stat.st_mode & 0200)
+ : (old_info.stat.st_gid == getgid()
+ ? (old_info.stat.st_mode & 0020)
+ : (old_info.stat.st_mode & 0002)))) {
+ int tt = msg_didany;
+
+ /* avoid a wait_return for this message, it's annoying */
+ EMSG2(_("E137: Viminfo file is not writable: %s"), fname);
+ msg_didany = tt;
+ fclose(fp_in);
+ goto end;
+ }
+#endif
+
+ // Make tempname
+ tempname = modname(fname, (char_u *)".tmp", FALSE);
+ if (tempname != NULL) {
+ /*
+ * Check if tempfile already exists. Never overwrite an
+ * existing file!
+ */
+ if (os_file_exists(tempname)) {
+ /*
+ * Try another name. Change one character, just before
+ * the extension.
+ */
+ wp = tempname + STRLEN(tempname) - 5;
+ if (wp < path_tail(tempname)) /* empty file name? */
+ wp = path_tail(tempname);
+ for (*wp = 'z'; os_file_exists(tempname); --*wp) {
+ /*
+ * They all exist? Must be something wrong! Don't
+ * write the viminfo file then.
+ */
+ if (*wp == 'a') {
+ free(tempname);
+ tempname = NULL;
+ break;
+ }
+ }
+ }
+ }
+
+ if (tempname != NULL) {
+ int fd;
+
+ /* Use mch_open() to be able to use O_NOFOLLOW and set file
+ * protection:
+ * Unix: same as original file, but strip s-bit. Reset umask to
+ * avoid it getting in the way.
+ * Others: r&w for user only. */
+# ifdef UNIX
+ umask_save = umask(0);
+ fd = mch_open((char *)tempname,
+ O_CREAT|O_EXCL|O_WRONLY|O_NOFOLLOW,
+ (int)((old_info.stat.st_mode & 0777) | 0600));
+ (void)umask(umask_save);
+# else
+ fd = mch_open((char *)tempname,
+ O_CREAT|O_EXCL|O_WRONLY|O_NOFOLLOW, 0600);
+# endif
+ if (fd < 0)
+ fp_out = NULL;
+ else
+ fp_out = fdopen(fd, WRITEBIN);
+
+ /*
+ * If we can't create in the same directory, try creating a
+ * "normal" temp file.
+ */
+ if (fp_out == NULL) {
+ free(tempname);
+ if ((tempname = vim_tempname('o')) != NULL)
+ fp_out = mch_fopen((char *)tempname, WRITEBIN);
+ }
+
+#if defined(UNIX) && defined(HAVE_FCHOWN)
+ /*
+ * Make sure the owner can read/write it. This only works for
+ * root.
+ */
+ if (fp_out != NULL) {
+ fchown(fileno(fp_out), old_info.stat.st_uid, old_info.stat.st_gid);
+ }
+#endif
+ }
+ }
+
+ /*
+ * Check if the new viminfo file can be written to.
+ */
+ if (fp_out == NULL) {
+ EMSG2(_("E138: Can't write viminfo file %s!"),
+ (fp_in == NULL || tempname == NULL) ? fname : tempname);
+ if (fp_in != NULL)
+ fclose(fp_in);
+ goto end;
+ }
+
+ if (p_verbose > 0) {
+ verbose_enter();
+ smsg((char_u *)_("Writing viminfo file \"%s\""), fname);
+ verbose_leave();
+ }
+
+ viminfo_errcnt = 0;
+ do_viminfo(fp_in, fp_out, forceit ? 0 : (VIF_WANT_INFO | VIF_WANT_MARKS));
+
+ fclose(fp_out); /* errors are ignored !? */
+ if (fp_in != NULL) {
+ fclose(fp_in);
+
+ /*
+ * In case of an error keep the original viminfo file.
+ * Otherwise rename the newly written file.
+ */
+ if (viminfo_errcnt || vim_rename(tempname, fname) == -1) {
+ os_remove((char *)tempname);
+ }
+ }
+
+end:
+ free(fname);
+ free(tempname);
+}
+
+/*
+ * Get the viminfo file name to use.
+ * If "file" is given and not empty, use it (has already been expanded by
+ * cmdline functions).
+ * Otherwise use "-i file_name", value from 'viminfo' or the default, and
+ * expand environment variables.
+ * Returns an allocated string. NULL when out of memory.
+ */
+static char_u *viminfo_filename(char_u *file)
+{
+ if (file == NULL || *file == NUL) {
+ if (use_viminfo != NULL)
+ file = use_viminfo;
+ else if ((file = find_viminfo_parameter('n')) == NULL || *file == NUL) {
+#ifdef VIMINFO_FILE2
+ /* don't use $HOME when not defined (turned into "c:/"!). */
+ if (os_getenv((char_u *)"HOME") == NULL) {
+ /* don't use $VIM when not available. */
+ expand_env((char_u *)"$VIM", NameBuff, MAXPATHL);
+ if (STRCMP("$VIM", NameBuff) != 0) /* $VIM was expanded */
+ file = (char_u *)VIMINFO_FILE2;
+ else
+ file = (char_u *)VIMINFO_FILE;
+ } else
+#endif
+ file = (char_u *)VIMINFO_FILE;
+ }
+ expand_env(file, NameBuff, MAXPATHL);
+ file = NameBuff;
+ }
+ return vim_strsave(file);
+}
+
+/*
+ * do_viminfo() -- Should only be called from read_viminfo() & write_viminfo().
+ */
+static void do_viminfo(FILE *fp_in, FILE *fp_out, int flags)
+{
+ int count = 0;
+ int eof = FALSE;
+ vir_T vir;
+ int merge = FALSE;
+
+ vir.vir_line = xmalloc(LSIZE);
+ vir.vir_fd = fp_in;
+ vir.vir_conv.vc_type = CONV_NONE;
+
+ if (fp_in != NULL) {
+ if (flags & VIF_WANT_INFO) {
+ eof = read_viminfo_up_to_marks(&vir,
+ flags & VIF_FORCEIT, fp_out != NULL);
+ merge = TRUE;
+ } else if (flags != 0)
+ /* Skip info, find start of marks */
+ while (!(eof = viminfo_readline(&vir))
+ && vir.vir_line[0] != '>')
+ ;
+ }
+ if (fp_out != NULL) {
+ /* Write the info: */
+ fprintf(fp_out, _("# This viminfo file was generated by Vim %s.\n"),
+ VIM_VERSION_MEDIUM);
+ fputs(_("# You may edit it if you're careful!\n\n"), fp_out);
+ fputs(_("# Value of 'encoding' when this file was written\n"), fp_out);
+ fprintf(fp_out, "*encoding=%s\n\n", p_enc);
+ write_viminfo_search_pattern(fp_out);
+ write_viminfo_sub_string(fp_out);
+ write_viminfo_history(fp_out, merge);
+ write_viminfo_registers(fp_out);
+ write_viminfo_varlist(fp_out);
+ write_viminfo_filemarks(fp_out);
+ write_viminfo_bufferlist(fp_out);
+ count = write_viminfo_marks(fp_out);
+ }
+ if (fp_in != NULL
+ && (flags & (VIF_WANT_MARKS | VIF_GET_OLDFILES | VIF_FORCEIT)))
+ copy_viminfo_marks(&vir, fp_out, count, eof, flags);
+
+ free(vir.vir_line);
+ if (vir.vir_conv.vc_type != CONV_NONE)
+ convert_setup(&vir.vir_conv, NULL, NULL);
+}
+
+/*
+ * read_viminfo_up_to_marks() -- Only called from do_viminfo(). Reads in the
+ * first part of the viminfo file which contains everything but the marks that
+ * are local to a file. Returns TRUE when end-of-file is reached. -- webb
+ */
+static int read_viminfo_up_to_marks(vir_T *virp, int forceit, int writing)
+{
+ int eof;
+ buf_T *buf;
+
+ prepare_viminfo_history(forceit ? 9999 : 0, writing);
+ eof = viminfo_readline(virp);
+ while (!eof && virp->vir_line[0] != '>') {
+ switch (virp->vir_line[0]) {
+ /* Characters reserved for future expansion, ignored now */
+ case '+': /* "+40 /path/dir file", for running vim without args */
+ case '|': /* to be defined */
+ case '^': /* to be defined */
+ case '<': /* long line - ignored */
+ /* A comment or empty line. */
+ case NUL:
+ case '\r':
+ case '\n':
+ case '#':
+ eof = viminfo_readline(virp);
+ break;
+ case '*': /* "*encoding=value" */
+ eof = viminfo_encoding(virp);
+ break;
+ case '!': /* global variable */
+ eof = read_viminfo_varlist(virp, writing);
+ break;
+ case '%': /* entry for buffer list */
+ eof = read_viminfo_bufferlist(virp, writing);
+ break;
+ case '"':
+ eof = read_viminfo_register(virp, forceit);
+ break;
+ case '/': /* Search string */
+ case '&': /* Substitute search string */
+ case '~': /* Last search string, followed by '/' or '&' */
+ eof = read_viminfo_search_pattern(virp, forceit);
+ break;
+ case '$':
+ eof = read_viminfo_sub_string(virp, forceit);
+ break;
+ case ':':
+ case '?':
+ case '=':
+ case '@':
+ eof = read_viminfo_history(virp, writing);
+ break;
+ case '-':
+ case '\'':
+ eof = read_viminfo_filemark(virp, forceit);
+ break;
+ default:
+ if (viminfo_error("E575: ", _("Illegal starting char"),
+ virp->vir_line))
+ eof = TRUE;
+ else
+ eof = viminfo_readline(virp);
+ break;
+ }
+ }
+
+ /* Finish reading history items. */
+ if (!writing)
+ finish_viminfo_history();
+
+ /* Change file names to buffer numbers for fmarks. */
+ for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ fmarks_check_names(buf);
+
+ return eof;
+}
+
+/*
+ * Compare the 'encoding' value in the viminfo file with the current value of
+ * 'encoding'. If different and the 'c' flag is in 'viminfo', setup for
+ * conversion of text with iconv() in viminfo_readstring().
+ */
+static int viminfo_encoding(vir_T *virp)
+{
+ char_u *p;
+ int i;
+
+ if (get_viminfo_parameter('c') != 0) {
+ p = vim_strchr(virp->vir_line, '=');
+ if (p != NULL) {
+ /* remove trailing newline */
+ ++p;
+ for (i = 0; vim_isprintc(p[i]); ++i)
+ ;
+ p[i] = NUL;
+
+ convert_setup(&virp->vir_conv, p, p_enc);
+ }
+ }
+ return viminfo_readline(virp);
+}
+
+/*
+ * Read a line from the viminfo file.
+ * Returns TRUE for end-of-file;
+ */
+int viminfo_readline(vir_T *virp)
+{
+ return vim_fgets(virp->vir_line, LSIZE, virp->vir_fd);
+}
+
+/*
+ * check string read from viminfo file
+ * remove '\n' at the end of the line
+ * - replace CTRL-V CTRL-V with CTRL-V
+ * - replace CTRL-V 'n' with '\n'
+ *
+ * Check for a long line as written by viminfo_writestring().
+ *
+ * Return the string in allocated memory (NULL when out of memory).
+ */
+char_u *
+viminfo_readstring (
+ vir_T *virp,
+ int off, /* offset for virp->vir_line */
+ int convert /* convert the string */
+)
+{
+ char_u *retval;
+ char_u *s, *d;
+
+ if (virp->vir_line[off] == Ctrl_V && vim_isdigit(virp->vir_line[off + 1])) {
+ ssize_t len = atol((char *)virp->vir_line + off + 1);
+ retval = xmalloc(len);
+ // TODO(philix): change type of vim_fgets() size argument to size_t
+ (void)vim_fgets(retval, (int)len, virp->vir_fd);
+ s = retval + 1; /* Skip the leading '<' */
+ } else {
+ retval = vim_strsave(virp->vir_line + off);
+ if (retval == NULL)
+ return NULL;
+ s = retval;
+ }
+
+ /* Change CTRL-V CTRL-V to CTRL-V and CTRL-V n to \n in-place. */
+ d = retval;
+ while (*s != NUL && *s != '\n') {
+ if (s[0] == Ctrl_V && s[1] != NUL) {
+ if (s[1] == 'n')
+ *d++ = '\n';
+ else
+ *d++ = Ctrl_V;
+ s += 2;
+ } else
+ *d++ = *s++;
+ }
+ *d = NUL;
+
+ if (convert && virp->vir_conv.vc_type != CONV_NONE && *retval != NUL) {
+ d = string_convert(&virp->vir_conv, retval, NULL);
+ if (d != NULL) {
+ free(retval);
+ retval = d;
+ }
+ }
+
+ return retval;
+}
+
+/*
+ * write string to viminfo file
+ * - replace CTRL-V with CTRL-V CTRL-V
+ * - replace '\n' with CTRL-V 'n'
+ * - add a '\n' at the end
+ *
+ * For a long line:
+ * - write " CTRL-V <length> \n " in first line
+ * - write " < <string> \n " in second line
+ */
+void viminfo_writestring(FILE *fd, char_u *p)
+{
+ int c;
+ char_u *s;
+ int len = 0;
+
+ for (s = p; *s != NUL; ++s) {
+ if (*s == Ctrl_V || *s == '\n')
+ ++len;
+ ++len;
+ }
+
+ /* If the string will be too long, write its length and put it in the next
+ * line. Take into account that some room is needed for what comes before
+ * the string (e.g., variable name). Add something to the length for the
+ * '<', NL and trailing NUL. */
+ if (len > LSIZE / 2)
+ fprintf(fd, IF_EB("\026%d\n<", CTRL_V_STR "%d\n<"), len + 3);
+
+ while ((c = *p++) != NUL) {
+ if (c == Ctrl_V || c == '\n') {
+ putc(Ctrl_V, fd);
+ if (c == '\n')
+ c = 'n';
+ }
+ putc(c, fd);
+ }
+ putc('\n', fd);
+}
+
+/*
+ * Implementation of ":fixdel", also used by get_stty().
+ * <BS> resulting <Del>
+ * ^? ^H
+ * not ^? ^?
+ */
+void do_fixdel(exarg_T *eap)
+{
+ char_u *p;
+
+ p = find_termcode((char_u *)"kb");
+ add_termcode((char_u *)"kD", p != NULL
+ && *p == DEL ? (char_u *)CTRL_H_STR : DEL_STR, FALSE);
+}
+
+void print_line_no_prefix(linenr_T lnum, int use_number, int list)
+{
+ char_u numbuf[30];
+
+ if (curwin->w_p_nu || use_number) {
+ vim_snprintf((char *)numbuf, sizeof(numbuf),
+ "%*ld ", number_width(curwin), (long)lnum);
+ msg_puts_attr(numbuf, hl_attr(HLF_N)); /* Highlight line nrs */
+ }
+ msg_prt_line(ml_get(lnum), list);
+}
+
+/*
+ * Print a text line. Also in silent mode ("ex -s").
+ */
+void print_line(linenr_T lnum, int use_number, int list)
+{
+ int save_silent = silent_mode;
+
+ msg_start();
+ silent_mode = FALSE;
+ info_message = TRUE; /* use mch_msg(), not mch_errmsg() */
+ print_line_no_prefix(lnum, use_number, list);
+ if (save_silent) {
+ msg_putchar('\n');
+ cursor_on(); /* msg_start() switches it off */
+ out_flush();
+ silent_mode = save_silent;
+ }
+ info_message = FALSE;
+}
+
+int rename_buffer(char_u *new_fname)
+{
+ char_u *fname, *sfname, *xfname;
+ buf_T *buf;
+
+ buf = curbuf;
+ apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, curbuf);
+ /* buffer changed, don't change name now */
+ if (buf != curbuf)
+ return FAIL;
+ if (aborting()) /* autocmds may abort script processing */
+ return FAIL;
+ /*
+ * The name of the current buffer will be changed.
+ * A new (unlisted) buffer entry needs to be made to hold the old file
+ * name, which will become the alternate file name.
+ * But don't set the alternate file name if the buffer didn't have a
+ * name.
+ */
+ fname = curbuf->b_ffname;
+ sfname = curbuf->b_sfname;
+ xfname = curbuf->b_fname;
+ curbuf->b_ffname = NULL;
+ curbuf->b_sfname = NULL;
+ if (setfname(curbuf, new_fname, NULL, TRUE) == FAIL) {
+ curbuf->b_ffname = fname;
+ curbuf->b_sfname = sfname;
+ return FAIL;
+ }
+ curbuf->b_flags |= BF_NOTEDITED;
+ if (xfname != NULL && *xfname != NUL) {
+ buf = buflist_new(fname, xfname, curwin->w_cursor.lnum, 0);
+ if (buf != NULL && !cmdmod.keepalt)
+ curwin->w_alt_fnum = buf->b_fnum;
+ }
+ free(fname);
+ free(sfname);
+ apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, curbuf);
+ /* Change directories when the 'acd' option is set. */
+ do_autochdir();
+ return OK;
+}
+
+/*
+ * ":file[!] [fname]".
+ */
+void ex_file(exarg_T *eap)
+{
+ /* ":0file" removes the file name. Check for illegal uses ":3file",
+ * "0file name", etc. */
+ if (eap->addr_count > 0
+ && (*eap->arg != NUL
+ || eap->line2 > 0
+ || eap->addr_count > 1)) {
+ EMSG(_(e_invarg));
+ return;
+ }
+
+ if (*eap->arg != NUL || eap->addr_count == 1) {
+ if (rename_buffer(eap->arg) == FAIL)
+ return;
+ }
+ /* print full file name if :cd used */
+ fileinfo(FALSE, FALSE, eap->forceit);
+}
+
+/*
+ * ":update".
+ */
+void ex_update(exarg_T *eap)
+{
+ if (curbufIsChanged())
+ (void)do_write(eap);
+}
+
+/*
+ * ":write" and ":saveas".
+ */
+void ex_write(exarg_T *eap)
+{
+ if (eap->usefilter) /* input lines to shell command */
+ do_bang(1, eap, FALSE, TRUE, FALSE);
+ else
+ (void)do_write(eap);
+}
+
+/*
+ * write current buffer to file 'eap->arg'
+ * if 'eap->append' is TRUE, append to the file
+ *
+ * if *eap->arg == NUL write to current file
+ *
+ * return FAIL for failure, OK otherwise
+ */
+int do_write(exarg_T *eap)
+{
+ int other;
+ char_u *fname = NULL; /* init to shut up gcc */
+ char_u *ffname;
+ int retval = FAIL;
+ char_u *free_fname = NULL;
+ buf_T *alt_buf = NULL;
+
+ if (not_writing()) /* check 'write' option */
+ return FAIL;
+
+ ffname = eap->arg;
+ if (*ffname == NUL) {
+ if (eap->cmdidx == CMD_saveas) {
+ EMSG(_(e_argreq));
+ goto theend;
+ }
+ other = FALSE;
+ } else {
+ fname = ffname;
+ free_fname = fix_fname(ffname);
+ /*
+ * When out-of-memory, keep unexpanded file name, because we MUST be
+ * able to write the file in this situation.
+ */
+ if (free_fname != NULL)
+ ffname = free_fname;
+ other = otherfile(ffname);
+ }
+
+ /*
+ * If we have a new file, put its name in the list of alternate file names.
+ */
+ if (other) {
+ if (vim_strchr(p_cpo, CPO_ALTWRITE) != NULL
+ || eap->cmdidx == CMD_saveas)
+ alt_buf = setaltfname(ffname, fname, (linenr_T)1);
+ else
+ alt_buf = buflist_findname(ffname);
+ if (alt_buf != NULL && alt_buf->b_ml.ml_mfp != NULL) {
+ /* Overwriting a file that is loaded in another buffer is not a
+ * good idea. */
+ EMSG(_(e_bufloaded));
+ goto theend;
+ }
+ }
+
+ /*
+ * Writing to the current file is not allowed in readonly mode
+ * and a file name is required.
+ * "nofile" and "nowrite" buffers cannot be written implicitly either.
+ */
+ if (!other && (
+ bt_dontwrite_msg(curbuf) ||
+ check_fname() == FAIL || check_readonly(&eap->forceit, curbuf)))
+ goto theend;
+
+ if (!other) {
+ ffname = curbuf->b_ffname;
+ fname = curbuf->b_fname;
+ /*
+ * Not writing the whole file is only allowed with '!'.
+ */
+ if ( (eap->line1 != 1
+ || eap->line2 != curbuf->b_ml.ml_line_count)
+ && !eap->forceit
+ && !eap->append
+ && !p_wa) {
+ if (p_confirm || cmdmod.confirm) {
+ if (vim_dialog_yesno(VIM_QUESTION, NULL,
+ (char_u *)_("Write partial file?"), 2) != VIM_YES)
+ goto theend;
+ eap->forceit = TRUE;
+ } else {
+ EMSG(_("E140: Use ! to write partial buffer"));
+ goto theend;
+ }
+ }
+ }
+
+ if (check_overwrite(eap, curbuf, fname, ffname, other) == OK) {
+ if (eap->cmdidx == CMD_saveas && alt_buf != NULL) {
+ buf_T *was_curbuf = curbuf;
+
+ apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, curbuf);
+ apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, alt_buf);
+ if (curbuf != was_curbuf || aborting()) {
+ /* buffer changed, don't change name now */
+ retval = FAIL;
+ goto theend;
+ }
+ /* Exchange the file names for the current and the alternate
+ * buffer. This makes it look like we are now editing the buffer
+ * under the new name. Must be done before buf_write(), because
+ * if there is no file name and 'cpo' contains 'F', it will set
+ * the file name. */
+ fname = alt_buf->b_fname;
+ alt_buf->b_fname = curbuf->b_fname;
+ curbuf->b_fname = fname;
+ fname = alt_buf->b_ffname;
+ alt_buf->b_ffname = curbuf->b_ffname;
+ curbuf->b_ffname = fname;
+ fname = alt_buf->b_sfname;
+ alt_buf->b_sfname = curbuf->b_sfname;
+ curbuf->b_sfname = fname;
+ buf_name_changed(curbuf);
+ apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, curbuf);
+ apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, alt_buf);
+ if (!alt_buf->b_p_bl) {
+ alt_buf->b_p_bl = TRUE;
+ apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, alt_buf);
+ }
+ if (curbuf != was_curbuf || aborting()) {
+ /* buffer changed, don't write the file */
+ retval = FAIL;
+ goto theend;
+ }
+
+ /* If 'filetype' was empty try detecting it now. */
+ if (*curbuf->b_p_ft == NUL) {
+ if (au_has_group((char_u *)"filetypedetect"))
+ (void)do_doautocmd((char_u *)"filetypedetect BufRead",
+ TRUE);
+ do_modelines(0);
+ }
+
+ /* Autocommands may have changed buffer names, esp. when
+ * 'autochdir' is set. */
+ fname = curbuf->b_sfname;
+ }
+
+ retval = buf_write(curbuf, ffname, fname, eap->line1, eap->line2,
+ eap, eap->append, eap->forceit, TRUE, FALSE);
+
+ /* After ":saveas fname" reset 'readonly'. */
+ if (eap->cmdidx == CMD_saveas) {
+ if (retval == OK) {
+ curbuf->b_p_ro = FALSE;
+ redraw_tabline = TRUE;
+ }
+ /* Change directories when the 'acd' option is set. */
+ do_autochdir();
+ }
+ }
+
+theend:
+ free(free_fname);
+ return retval;
+}
+
+/*
+ * Check if it is allowed to overwrite a file. If b_flags has BF_NOTEDITED,
+ * BF_NEW or BF_READERR, check for overwriting current file.
+ * May set eap->forceit if a dialog says it's OK to overwrite.
+ * Return OK if it's OK, FAIL if it is not.
+ */
+int
+check_overwrite (
+ exarg_T *eap,
+ buf_T *buf,
+ char_u *fname, /* file name to be used (can differ from
+ buf->ffname) */
+ char_u *ffname, /* full path version of fname */
+ int other /* writing under other name */
+)
+{
+ /*
+ * write to other file or b_flags set or not writing the whole file:
+ * overwriting only allowed with '!'
+ */
+ if ( (other
+ || (buf->b_flags & BF_NOTEDITED)
+ || ((buf->b_flags & BF_NEW)
+ && vim_strchr(p_cpo, CPO_OVERNEW) == NULL)
+ || (buf->b_flags & BF_READERR))
+ && !p_wa
+ && !bt_nofile(buf)
+ && os_file_exists(ffname)) {
+ if (!eap->forceit && !eap->append) {
+#ifdef UNIX
+ /* with UNIX it is possible to open a directory */
+ if (os_isdir(ffname)) {
+ EMSG2(_(e_isadir2), ffname);
+ return FAIL;
+ }
+#endif
+ if (p_confirm || cmdmod.confirm) {
+ char_u buff[DIALOG_MSG_SIZE];
+
+ dialog_msg(buff, _("Overwrite existing file \"%s\"?"), fname);
+ if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) != VIM_YES)
+ return FAIL;
+ eap->forceit = TRUE;
+ } else {
+ EMSG(_(e_exists));
+ return FAIL;
+ }
+ }
+
+ /* For ":w! filename" check that no swap file exists for "filename". */
+ if (other && !emsg_silent) {
+ char_u *dir;
+ char_u *p;
+ char_u *swapname;
+
+ /* We only try the first entry in 'directory', without checking if
+ * it's writable. If the "." directory is not writable the write
+ * will probably fail anyway.
+ * Use 'shortname' of the current buffer, since there is no buffer
+ * for the written file. */
+ if (*p_dir == NUL) {
+ dir = xmalloc(5);
+ STRCPY(dir, ".");
+ } else {
+ dir = xmalloc(MAXPATHL);
+ p = p_dir;
+ copy_option_part(&p, dir, MAXPATHL, ",");
+ }
+ swapname = makeswapname(fname, ffname, curbuf, dir);
+ free(dir);
+ if (os_file_exists(swapname)) {
+ if (p_confirm || cmdmod.confirm) {
+ char_u buff[DIALOG_MSG_SIZE];
+
+ dialog_msg(buff,
+ _("Swap file \"%s\" exists, overwrite anyway?"),
+ swapname);
+ if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2)
+ != VIM_YES) {
+ free(swapname);
+ return FAIL;
+ }
+ eap->forceit = TRUE;
+ } else {
+ EMSG2(_("E768: Swap file exists: %s (:silent! overrides)"),
+ swapname);
+ free(swapname);
+ return FAIL;
+ }
+ }
+ free(swapname);
+ }
+ }
+ return OK;
+}
+
+/*
+ * Handle ":wnext", ":wNext" and ":wprevious" commands.
+ */
+void ex_wnext(exarg_T *eap)
+{
+ int i;
+
+ if (eap->cmd[1] == 'n')
+ i = curwin->w_arg_idx + (int)eap->line2;
+ else
+ i = curwin->w_arg_idx - (int)eap->line2;
+ eap->line1 = 1;
+ eap->line2 = curbuf->b_ml.ml_line_count;
+ if (do_write(eap) != FAIL)
+ do_argfile(eap, i);
+}
+
+/*
+ * ":wall", ":wqall" and ":xall": Write all changed files (and exit).
+ */
+void do_wqall(exarg_T *eap)
+{
+ buf_T *buf;
+ int error = 0;
+ int save_forceit = eap->forceit;
+
+ if (eap->cmdidx == CMD_xall || eap->cmdidx == CMD_wqall)
+ exiting = TRUE;
+
+ for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
+ if (bufIsChanged(buf)) {
+ /*
+ * Check if there is a reason the buffer cannot be written:
+ * 1. if the 'write' option is set
+ * 2. if there is no file name (even after browsing)
+ * 3. if the 'readonly' is set (even after a dialog)
+ * 4. if overwriting is allowed (even after a dialog)
+ */
+ if (not_writing()) {
+ ++error;
+ break;
+ }
+ if (buf->b_ffname == NULL) {
+ EMSGN(_("E141: No file name for buffer %" PRId64), buf->b_fnum);
+ ++error;
+ } else if (check_readonly(&eap->forceit, buf)
+ || check_overwrite(eap, buf, buf->b_fname, buf->b_ffname,
+ FALSE) == FAIL) {
+ ++error;
+ } else {
+ if (buf_write_all(buf, eap->forceit) == FAIL)
+ ++error;
+ /* an autocommand may have deleted the buffer */
+ if (!buf_valid(buf))
+ buf = firstbuf;
+ }
+ eap->forceit = save_forceit; /* check_overwrite() may set it */
+ }
+ }
+ if (exiting) {
+ if (!error)
+ getout(0); /* exit Vim */
+ not_exiting();
+ }
+}
+
+/*
+ * Check the 'write' option.
+ * Return TRUE and give a message when it's not st.
+ */
+int not_writing(void)
+{
+ if (p_write)
+ return FALSE;
+ EMSG(_("E142: File not written: Writing is disabled by 'write' option"));
+ return TRUE;
+}
+
+/*
+ * Check if a buffer is read-only (either 'readonly' option is set or file is
+ * read-only). Ask for overruling in a dialog. Return TRUE and give an error
+ * message when the buffer is readonly.
+ */
+static int check_readonly(int *forceit, buf_T *buf)
+{
+ /* Handle a file being readonly when the 'readonly' option is set or when
+ * the file exists and permissions are read-only. */
+ if (!*forceit && (buf->b_p_ro
+ || (os_file_exists(buf->b_ffname)
+ && os_file_is_readonly((char *)buf->b_ffname)))) {
+ if ((p_confirm || cmdmod.confirm) && buf->b_fname != NULL) {
+ char_u buff[DIALOG_MSG_SIZE];
+
+ if (buf->b_p_ro)
+ dialog_msg(buff,
+ _(
+ "'readonly' option is set for \"%s\".\nDo you wish to write anyway?"),
+ buf->b_fname);
+ else
+ dialog_msg(buff,
+ _(
+ "File permissions of \"%s\" are read-only.\nIt may still be possible to write it.\nDo you wish to try?"),
+ buf->b_fname);
+
+ if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) == VIM_YES) {
+ /* Set forceit, to force the writing of a readonly file */
+ *forceit = TRUE;
+ return FALSE;
+ } else
+ return TRUE;
+ } else if (buf->b_p_ro)
+ EMSG(_(e_readonly));
+ else
+ EMSG2(_("E505: \"%s\" is read-only (add ! to override)"),
+ buf->b_fname);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/*
+ * Try to abandon current file and edit a new or existing file.
+ * 'fnum' is the number of the file, if zero use ffname/sfname.
+ *
+ * Return 1 for "normal" error, 2 for "not written" error, 0 for success
+ * -1 for successfully opening another file.
+ * 'lnum' is the line number for the cursor in the new file (if non-zero).
+ */
+int getfile(int fnum, char_u *ffname, char_u *sfname, int setpm, linenr_T lnum, int forceit)
+{
+ int other;
+ int retval;
+ char_u *free_me = NULL;
+
+ if (text_locked())
+ return 1;
+ if (curbuf_locked())
+ return 1;
+
+ if (fnum == 0) {
+ /* make ffname full path, set sfname */
+ fname_expand(curbuf, &ffname, &sfname);
+ other = otherfile(ffname);
+ free_me = ffname; /* has been allocated, free() later */
+ } else
+ other = (fnum != curbuf->b_fnum);
+
+ if (other)
+ ++no_wait_return; /* don't wait for autowrite message */
+ if (other && !forceit && curbuf->b_nwindows == 1 && !P_HID(curbuf)
+ && curbufIsChanged() && autowrite(curbuf, forceit) == FAIL) {
+ if (p_confirm && p_write)
+ dialog_changed(curbuf, FALSE);
+ if (curbufIsChanged()) {
+ if (other)
+ --no_wait_return;
+ EMSG(_(e_nowrtmsg));
+ retval = 2; /* file has been changed */
+ goto theend;
+ }
+ }
+ if (other)
+ --no_wait_return;
+ if (setpm)
+ setpcmark();
+ if (!other) {
+ if (lnum != 0)
+ curwin->w_cursor.lnum = lnum;
+ check_cursor_lnum();
+ beginline(BL_SOL | BL_FIX);
+ retval = 0; /* it's in the same file */
+ } else if (do_ecmd(fnum, ffname, sfname, NULL, lnum,
+ (P_HID(curbuf) ? ECMD_HIDE : 0) + (forceit ? ECMD_FORCEIT : 0),
+ curwin) == OK)
+ retval = -1; /* opened another file */
+ else
+ retval = 1; /* error encountered */
+
+theend:
+ free(free_me);
+ return retval;
+}
+
+/*
+ * start editing a new file
+ *
+ * fnum: file number; if zero use ffname/sfname
+ * ffname: the file name
+ * - full path if sfname used,
+ * - any file name if sfname is NULL
+ * - empty string to re-edit with the same file name (but may be
+ * in a different directory)
+ * - NULL to start an empty buffer
+ * sfname: the short file name (or NULL)
+ * eap: contains the command to be executed after loading the file and
+ * forced 'ff' and 'fenc'
+ * newlnum: if > 0: put cursor on this line number (if possible)
+ * if ECMD_LASTL: use last position in loaded file
+ * if ECMD_LAST: use last position in all files
+ * if ECMD_ONE: use first line
+ * flags:
+ * ECMD_HIDE: if TRUE don't free the current buffer
+ * ECMD_SET_HELP: set b_help flag of (new) buffer before opening file
+ * ECMD_OLDBUF: use existing buffer if it exists
+ * ECMD_FORCEIT: ! used for Ex command
+ * ECMD_ADDBUF: don't edit, just add to buffer list
+ * oldwin: Should be "curwin" when editing a new buffer in the current
+ * window, NULL when splitting the window first. When not NULL info
+ * of the previous buffer for "oldwin" is stored.
+ *
+ * return FAIL for failure, OK otherwise
+ */
+int
+do_ecmd (
+ int fnum,
+ char_u *ffname,
+ char_u *sfname,
+ exarg_T *eap, /* can be NULL! */
+ linenr_T newlnum,
+ int flags,
+ win_T *oldwin
+)
+{
+ int other_file; /* TRUE if editing another file */
+ int oldbuf; /* TRUE if using existing buffer */
+ int auto_buf = FALSE; /* TRUE if autocommands brought us
+ into the buffer unexpectedly */
+ char_u *new_name = NULL;
+ int did_set_swapcommand = FALSE;
+ buf_T *buf;
+ buf_T *old_curbuf = curbuf;
+ char_u *free_fname = NULL;
+ int retval = FAIL;
+ long n;
+ linenr_T lnum;
+ linenr_T topline = 0;
+ int newcol = -1;
+ int solcol = -1;
+ pos_T *pos;
+ char_u *command = NULL;
+ int did_get_winopts = FALSE;
+ int readfile_flags = 0;
+
+ if (eap != NULL)
+ command = eap->do_ecmd_cmd;
+
+ if (fnum != 0) {
+ if (fnum == curbuf->b_fnum) /* file is already being edited */
+ return OK; /* nothing to do */
+ other_file = TRUE;
+ } else {
+ /* if no short name given, use ffname for short name */
+ if (sfname == NULL)
+ sfname = ffname;
+#ifdef USE_FNAME_CASE
+ if (sfname != NULL)
+ fname_case(sfname, 0); /* set correct case for sfname */
+#endif
+
+ if ((flags & ECMD_ADDBUF) && (ffname == NULL || *ffname == NUL))
+ goto theend;
+
+ if (ffname == NULL)
+ other_file = TRUE;
+ /* there is no file name */
+ else if (*ffname == NUL && curbuf->b_ffname == NULL)
+ other_file = FALSE;
+ else {
+ if (*ffname == NUL) { /* re-edit with same file name */
+ ffname = curbuf->b_ffname;
+ sfname = curbuf->b_fname;
+ }
+ free_fname = fix_fname(ffname); /* may expand to full path name */
+ if (free_fname != NULL)
+ ffname = free_fname;
+ other_file = otherfile(ffname);
+ }
+ }
+
+ /*
+ * if the file was changed we may not be allowed to abandon it
+ * - if we are going to re-edit the same file
+ * - or if we are the only window on this file and if ECMD_HIDE is FALSE
+ */
+ if ( ((!other_file && !(flags & ECMD_OLDBUF))
+ || (curbuf->b_nwindows == 1
+ && !(flags & (ECMD_HIDE | ECMD_ADDBUF))))
+ && check_changed(curbuf, (p_awa ? CCGD_AW : 0)
+ | (other_file ? 0 : CCGD_MULTWIN)
+ | ((flags & ECMD_FORCEIT) ? CCGD_FORCEIT : 0)
+ | (eap == NULL ? 0 : CCGD_EXCMD))) {
+ if (fnum == 0 && other_file && ffname != NULL)
+ (void)setaltfname(ffname, sfname, newlnum < 0 ? 0 : newlnum);
+ goto theend;
+ }
+
+ /*
+ * End Visual mode before switching to another buffer, so the text can be
+ * copied into the GUI selection buffer.
+ */
+ reset_VIsual();
+
+ if ((command != NULL || newlnum > (linenr_T)0)
+ && *get_vim_var_str(VV_SWAPCOMMAND) == NUL) {
+ char_u *p;
+
+ /* Set v:swapcommand for the SwapExists autocommands. */
+ size_t len = (command != NULL) ? STRLEN(command) + 3 : 30;
+ p = xmalloc(len);
+ if (command != NULL) {
+ vim_snprintf((char *)p, len, ":%s\r", command);
+ } else {
+ vim_snprintf((char *)p, len, "%" PRId64 "G", (int64_t)newlnum);
+ }
+ set_vim_var_string(VV_SWAPCOMMAND, p, -1);
+ did_set_swapcommand = TRUE;
+ free(p);
+ }
+
+ /*
+ * If we are starting to edit another file, open a (new) buffer.
+ * Otherwise we re-use the current buffer.
+ */
+ if (other_file) {
+ if (!(flags & ECMD_ADDBUF)) {
+ if (!cmdmod.keepalt)
+ curwin->w_alt_fnum = curbuf->b_fnum;
+ if (oldwin != NULL)
+ buflist_altfpos(oldwin);
+ }
+
+ if (fnum)
+ buf = buflist_findnr(fnum);
+ else {
+ if (flags & ECMD_ADDBUF) {
+ linenr_T tlnum = 1L;
+
+ if (command != NULL) {
+ tlnum = atol((char *)command);
+ if (tlnum <= 0)
+ tlnum = 1L;
+ }
+ (void)buflist_new(ffname, sfname, tlnum, BLN_LISTED);
+ goto theend;
+ }
+ buf = buflist_new(ffname, sfname, 0L,
+ BLN_CURBUF | ((flags & ECMD_SET_HELP) ? 0 : BLN_LISTED));
+ // Autocmds may change curwin and curbuf.
+ if (oldwin != NULL) {
+ oldwin = curwin;
+ }
+ old_curbuf = curbuf;
+ }
+ if (buf == NULL)
+ goto theend;
+ if (buf->b_ml.ml_mfp == NULL) { /* no memfile yet */
+ oldbuf = FALSE;
+ buf->b_nwindows = 0;
+ } else { /* existing memfile */
+ oldbuf = TRUE;
+ (void)buf_check_timestamp(buf, FALSE);
+ /* Check if autocommands made buffer invalid or changed the current
+ * buffer. */
+ if (!buf_valid(buf)
+ || curbuf != old_curbuf
+ )
+ goto theend;
+ if (aborting()) /* autocmds may abort script processing */
+ goto theend;
+ }
+
+ /* May jump to last used line number for a loaded buffer or when asked
+ * for explicitly */
+ if ((oldbuf && newlnum == ECMD_LASTL) || newlnum == ECMD_LAST) {
+ pos = buflist_findfpos(buf);
+ newlnum = pos->lnum;
+ solcol = pos->col;
+ }
+
+ /*
+ * Make the (new) buffer the one used by the current window.
+ * If the old buffer becomes unused, free it if ECMD_HIDE is FALSE.
+ * If the current buffer was empty and has no file name, curbuf
+ * is returned by buflist_new().
+ */
+ if (buf != curbuf) {
+ /*
+ * Be careful: The autocommands may delete any buffer and change
+ * the current buffer.
+ * - If the buffer we are going to edit is deleted, give up.
+ * - If the current buffer is deleted, prefer to load the new
+ * buffer when loading a buffer is required. This avoids
+ * loading another buffer which then must be closed again.
+ * - If we ended up in the new buffer already, need to skip a few
+ * things, set auto_buf.
+ */
+ if (buf->b_fname != NULL)
+ new_name = vim_strsave(buf->b_fname);
+ au_new_curbuf = buf;
+ apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
+ if (!buf_valid(buf)) { /* new buffer has been deleted */
+ delbuf_msg(new_name); /* frees new_name */
+ goto theend;
+ }
+ if (aborting()) { /* autocmds may abort script processing */
+ free(new_name);
+ goto theend;
+ }
+ if (buf == curbuf) /* already in new buffer */
+ auto_buf = TRUE;
+ else {
+ if (curbuf == old_curbuf)
+ buf_copy_options(buf, BCO_ENTER);
+
+ /* close the link to the current buffer */
+ u_sync(FALSE);
+ close_buffer(oldwin, curbuf,
+ (flags & ECMD_HIDE) ? 0 : DOBUF_UNLOAD, FALSE);
+
+ /* Autocommands may open a new window and leave oldwin open
+ * which leads to crashes since the above call sets
+ * oldwin->w_buffer to NULL. */
+ if (curwin != oldwin && oldwin != aucmd_win
+ && win_valid(oldwin) && oldwin->w_buffer == NULL)
+ win_close(oldwin, FALSE);
+
+ if (aborting()) { /* autocmds may abort script processing */
+ free(new_name);
+ goto theend;
+ }
+ /* Be careful again, like above. */
+ if (!buf_valid(buf)) { /* new buffer has been deleted */
+ delbuf_msg(new_name); /* frees new_name */
+ goto theend;
+ }
+ if (buf == curbuf) /* already in new buffer */
+ auto_buf = TRUE;
+ else {
+ /*
+ * <VN> We could instead free the synblock
+ * and re-attach to buffer, perhaps.
+ */
+ if (curwin->w_buffer != NULL &&
+ curwin->w_s == &(curwin->w_buffer->b_s))
+ curwin->w_s = &(buf->b_s);
+
+ curwin->w_buffer = buf;
+ curbuf = buf;
+ ++curbuf->b_nwindows;
+
+ /* Set 'fileformat', 'binary' and 'fenc' when forced. */
+ if (!oldbuf && eap != NULL) {
+ set_file_options(TRUE, eap);
+ set_forced_fenc(eap);
+ }
+ }
+
+ /* May get the window options from the last time this buffer
+ * was in this window (or another window). If not used
+ * before, reset the local window options to the global
+ * values. Also restores old folding stuff. */
+ get_winopts(curbuf);
+ did_get_winopts = TRUE;
+
+ }
+ free(new_name);
+ au_new_curbuf = NULL;
+ } else
+ ++curbuf->b_nwindows;
+
+ curwin->w_pcmark.lnum = 1;
+ curwin->w_pcmark.col = 0;
+ } else { /* !other_file */
+ if (
+ (flags & ECMD_ADDBUF) ||
+ check_fname() == FAIL)
+ goto theend;
+ oldbuf = (flags & ECMD_OLDBUF);
+ }
+
+ if ((flags & ECMD_SET_HELP) || keep_help_flag) {
+ char_u *p;
+
+ curbuf->b_help = TRUE;
+ set_string_option_direct((char_u *)"buftype", -1,
+ (char_u *)"help", OPT_FREE|OPT_LOCAL, 0);
+
+ /*
+ * Always set these options after jumping to a help tag, because the
+ * user may have an autocommand that gets in the way.
+ * Accept all ASCII chars for keywords, except ' ', '*', '"', '|', and
+ * latin1 word characters (for translated help files).
+ * Only set it when needed, buf_init_chartab() is some work.
+ */
+ p =
+ (char_u *)"!-~,^*,^|,^\",192-255";
+ if (STRCMP(curbuf->b_p_isk, p) != 0) {
+ set_string_option_direct((char_u *)"isk", -1, p,
+ OPT_FREE|OPT_LOCAL, 0);
+ check_buf_options(curbuf);
+ (void)buf_init_chartab(curbuf, FALSE);
+ }
+
+ curbuf->b_p_ts = 8; /* 'tabstop' is 8 */
+ curwin->w_p_list = FALSE; /* no list mode */
+
+ curbuf->b_p_ma = FALSE; /* not modifiable */
+ curbuf->b_p_bin = FALSE; /* reset 'bin' before reading file */
+ curwin->w_p_nu = 0; /* no line numbers */
+ curwin->w_p_rnu = 0; /* no relative line numbers */
+ RESET_BINDING(curwin); /* no scroll or cursor binding */
+ curwin->w_p_arab = FALSE; /* no arabic mode */
+ curwin->w_p_rl = FALSE; /* help window is left-to-right */
+ curwin->w_p_fen = FALSE; /* No folding in the help window */
+ curwin->w_p_diff = FALSE; /* No 'diff' */
+ curwin->w_p_spell = FALSE; /* No spell checking */
+
+ buf = curbuf;
+ set_buflisted(FALSE);
+ } else {
+ buf = curbuf;
+ /* Don't make a buffer listed if it's a help buffer. Useful when
+ * using CTRL-O to go back to a help file. */
+ if (!curbuf->b_help)
+ set_buflisted(TRUE);
+ }
+
+ /* If autocommands change buffers under our fingers, forget about
+ * editing the file. */
+ if (buf != curbuf)
+ goto theend;
+ if (aborting()) /* autocmds may abort script processing */
+ goto theend;
+
+ /* Since we are starting to edit a file, consider the filetype to be
+ * unset. Helps for when an autocommand changes files and expects syntax
+ * highlighting to work in the other file. */
+ did_filetype = FALSE;
+
+ /*
+ * other_file oldbuf
+ * FALSE FALSE re-edit same file, buffer is re-used
+ * FALSE TRUE re-edit same file, nothing changes
+ * TRUE FALSE start editing new file, new buffer
+ * TRUE TRUE start editing in existing buffer (nothing to do)
+ */
+ if (!other_file && !oldbuf) { /* re-use the buffer */
+ set_last_cursor(curwin); /* may set b_last_cursor */
+ if (newlnum == ECMD_LAST || newlnum == ECMD_LASTL) {
+ newlnum = curwin->w_cursor.lnum;
+ solcol = curwin->w_cursor.col;
+ }
+ buf = curbuf;
+ if (buf->b_fname != NULL)
+ new_name = vim_strsave(buf->b_fname);
+ else
+ new_name = NULL;
+ if (p_ur < 0 || curbuf->b_ml.ml_line_count <= p_ur) {
+ /* Save all the text, so that the reload can be undone.
+ * Sync first so that this is a separate undo-able action. */
+ u_sync(FALSE);
+ if (u_savecommon(0, curbuf->b_ml.ml_line_count + 1, 0, TRUE)
+ == FAIL)
+ goto theend;
+ u_unchanged(curbuf);
+ buf_freeall(curbuf, BFA_KEEP_UNDO);
+
+ /* tell readfile() not to clear or reload undo info */
+ readfile_flags = READ_KEEP_UNDO;
+ } else
+ buf_freeall(curbuf, 0); /* free all things for buffer */
+ /* If autocommands deleted the buffer we were going to re-edit, give
+ * up and jump to the end. */
+ if (!buf_valid(buf)) {
+ delbuf_msg(new_name); /* frees new_name */
+ goto theend;
+ }
+ free(new_name);
+
+ /* If autocommands change buffers under our fingers, forget about
+ * re-editing the file. Should do the buf_clear_file(), but perhaps
+ * the autocommands changed the buffer... */
+ if (buf != curbuf)
+ goto theend;
+ if (aborting()) /* autocmds may abort script processing */
+ goto theend;
+ buf_clear_file(curbuf);
+ curbuf->b_op_start.lnum = 0; /* clear '[ and '] marks */
+ curbuf->b_op_end.lnum = 0;
+ }
+
+ /*
+ * If we get here we are sure to start editing
+ */
+ /* don't redraw until the cursor is in the right line */
+ ++RedrawingDisabled;
+
+ /* Assume success now */
+ retval = OK;
+
+ /*
+ * Reset cursor position, could be used by autocommands.
+ */
+ check_cursor();
+
+ /*
+ * Check if we are editing the w_arg_idx file in the argument list.
+ */
+ check_arg_idx(curwin);
+
+ if (!auto_buf) {
+ /*
+ * Set cursor and init window before reading the file and executing
+ * autocommands. This allows for the autocommands to position the
+ * cursor.
+ */
+ curwin_init();
+
+ /* It's possible that all lines in the buffer changed. Need to update
+ * automatic folding for all windows where it's used. */
+ {
+ win_T *win;
+ tabpage_T *tp;
+
+ FOR_ALL_TAB_WINDOWS(tp, win)
+ if (win->w_buffer == curbuf)
+ foldUpdateAll(win);
+ }
+
+ /* Change directories when the 'acd' option is set. */
+ do_autochdir();
+
+ /*
+ * Careful: open_buffer() and apply_autocmds() may change the current
+ * buffer and window.
+ */
+ lnum = curwin->w_cursor.lnum;
+ topline = curwin->w_topline;
+ if (!oldbuf) { /* need to read the file */
+#if defined(HAS_SWAP_EXISTS_ACTION)
+ swap_exists_action = SEA_DIALOG;
+#endif
+ curbuf->b_flags |= BF_CHECK_RO; /* set/reset 'ro' flag */
+
+ /*
+ * Open the buffer and read the file.
+ */
+ if (should_abort(open_buffer(FALSE, eap, readfile_flags)))
+ retval = FAIL;
+
+#if defined(HAS_SWAP_EXISTS_ACTION)
+ if (swap_exists_action == SEA_QUIT)
+ retval = FAIL;
+ handle_swap_exists(old_curbuf);
+#endif
+ } else {
+ /* Read the modelines, but only to set window-local options. Any
+ * buffer-local options have already been set and may have been
+ * changed by the user. */
+ do_modelines(OPT_WINONLY);
+
+ apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf,
+ &retval);
+ apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf,
+ &retval);
+ }
+ check_arg_idx(curwin);
+
+ /*
+ * If autocommands change the cursor position or topline, we should
+ * keep it.
+ */
+ if (curwin->w_cursor.lnum != lnum) {
+ newlnum = curwin->w_cursor.lnum;
+ newcol = curwin->w_cursor.col;
+ }
+ if (curwin->w_topline == topline)
+ topline = 0;
+
+ /* Even when cursor didn't move we need to recompute topline. */
+ changed_line_abv_curs();
+
+ maketitle();
+ }
+
+ /* Tell the diff stuff that this buffer is new and/or needs updating.
+ * Also needed when re-editing the same buffer, because unloading will
+ * have removed it as a diff buffer. */
+ if (curwin->w_p_diff) {
+ diff_buf_add(curbuf);
+ diff_invalidate(curbuf);
+ }
+
+ /* If the window options were changed may need to set the spell language.
+ * Can only do this after the buffer has been properly setup. */
+ if (did_get_winopts && curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL)
+ (void)did_set_spelllang(curwin);
+
+ if (command == NULL) {
+ if (newcol >= 0) { /* position set by autocommands */
+ curwin->w_cursor.lnum = newlnum;
+ curwin->w_cursor.col = newcol;
+ check_cursor();
+ } else if (newlnum > 0) { /* line number from caller or old position */
+ curwin->w_cursor.lnum = newlnum;
+ check_cursor_lnum();
+ if (solcol >= 0 && !p_sol) {
+ /* 'sol' is off: Use last known column. */
+ curwin->w_cursor.col = solcol;
+ check_cursor_col();
+ curwin->w_cursor.coladd = 0;
+ curwin->w_set_curswant = TRUE;
+ } else
+ beginline(BL_SOL | BL_FIX);
+ } else { /* no line number, go to last line in Ex mode */
+ if (exmode_active)
+ curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
+ beginline(BL_WHITE | BL_FIX);
+ }
+ }
+
+ /* Check if cursors in other windows on the same buffer are still valid */
+ check_lnums(FALSE);
+
+ /*
+ * Did not read the file, need to show some info about the file.
+ * Do this after setting the cursor.
+ */
+ if (oldbuf
+ && !auto_buf
+ ) {
+ int msg_scroll_save = msg_scroll;
+
+ /* Obey the 'O' flag in 'cpoptions': overwrite any previous file
+ * message. */
+ if (shortmess(SHM_OVERALL) && !exiting && p_verbose == 0)
+ msg_scroll = FALSE;
+ if (!msg_scroll) /* wait a bit when overwriting an error msg */
+ check_for_delay(FALSE);
+ msg_start();
+ msg_scroll = msg_scroll_save;
+ msg_scrolled_ign = TRUE;
+
+ fileinfo(FALSE, TRUE, FALSE);
+
+ msg_scrolled_ign = FALSE;
+ }
+
+ if (command != NULL)
+ do_cmdline(command, NULL, NULL, DOCMD_VERBOSE);
+
+ if (curbuf->b_kmap_state & KEYMAP_INIT)
+ (void)keymap_init();
+
+ --RedrawingDisabled;
+ if (!skip_redraw) {
+ n = p_so;
+ if (topline == 0 && command == NULL)
+ p_so = 999; /* force cursor halfway the window */
+ update_topline();
+ curwin->w_scbind_pos = curwin->w_topline;
+ p_so = n;
+ redraw_curbuf_later(NOT_VALID); /* redraw this buffer later */
+ }
+
+ if (p_im)
+ need_start_insertmode = TRUE;
+
+ /* Change directories when the 'acd' option is set. */
+ do_autochdir();
+
+
+theend:
+ if (did_set_swapcommand)
+ set_vim_var_string(VV_SWAPCOMMAND, NULL, -1);
+ free(free_fname);
+ return retval;
+}
+
+static void delbuf_msg(char_u *name)
+{
+ EMSG2(_("E143: Autocommands unexpectedly deleted new buffer %s"),
+ name == NULL ? (char_u *)"" : name);
+ free(name);
+ au_new_curbuf = NULL;
+}
+
+static int append_indent = 0; /* autoindent for first line */
+
+/*
+ * ":insert" and ":append", also used by ":change"
+ */
+void ex_append(exarg_T *eap)
+{
+ char_u *theline;
+ int did_undo = FALSE;
+ linenr_T lnum = eap->line2;
+ int indent = 0;
+ char_u *p;
+ int vcol;
+ int empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
+
+ /* the ! flag toggles autoindent */
+ if (eap->forceit)
+ curbuf->b_p_ai = !curbuf->b_p_ai;
+
+ /* First autoindent comes from the line we start on */
+ if (eap->cmdidx != CMD_change && curbuf->b_p_ai && lnum > 0)
+ append_indent = get_indent_lnum(lnum);
+
+ if (eap->cmdidx != CMD_append)
+ --lnum;
+
+ /* when the buffer is empty append to line 0 and delete the dummy line */
+ if (empty && lnum == 1)
+ lnum = 0;
+
+ State = INSERT; /* behave like in Insert mode */
+ if (curbuf->b_p_iminsert == B_IMODE_LMAP)
+ State |= LANGMAP;
+
+ for (;; ) {
+ msg_scroll = TRUE;
+ need_wait_return = FALSE;
+ if (curbuf->b_p_ai) {
+ if (append_indent >= 0) {
+ indent = append_indent;
+ append_indent = -1;
+ } else if (lnum > 0)
+ indent = get_indent_lnum(lnum);
+ }
+ ex_keep_indent = FALSE;
+ if (eap->getline == NULL) {
+ /* No getline() function, use the lines that follow. This ends
+ * when there is no more. */
+ if (eap->nextcmd == NULL || *eap->nextcmd == NUL)
+ break;
+ p = vim_strchr(eap->nextcmd, NL);
+ if (p == NULL)
+ p = eap->nextcmd + STRLEN(eap->nextcmd);
+ theline = vim_strnsave(eap->nextcmd, (int)(p - eap->nextcmd));
+ if (*p != NUL)
+ ++p;
+ eap->nextcmd = p;
+ } else
+ theline = eap->getline(
+ eap->cstack->cs_looplevel > 0 ? -1 :
+ NUL, eap->cookie, indent);
+ lines_left = Rows - 1;
+ if (theline == NULL)
+ break;
+
+ /* Using ^ CTRL-D in getexmodeline() makes us repeat the indent. */
+ if (ex_keep_indent)
+ append_indent = indent;
+
+ /* Look for the "." after automatic indent. */
+ vcol = 0;
+ for (p = theline; indent > vcol; ++p) {
+ if (*p == ' ')
+ ++vcol;
+ else if (*p == TAB)
+ vcol += 8 - vcol % 8;
+ else
+ break;
+ }
+ if ((p[0] == '.' && p[1] == NUL)
+ || (!did_undo && u_save(lnum, lnum + 1 + (empty ? 1 : 0))
+ == FAIL)) {
+ free(theline);
+ break;
+ }
+
+ /* don't use autoindent if nothing was typed. */
+ if (p[0] == NUL)
+ theline[0] = NUL;
+
+ did_undo = TRUE;
+ ml_append(lnum, theline, (colnr_T)0, FALSE);
+ appended_lines_mark(lnum, 1L);
+
+ free(theline);
+ ++lnum;
+
+ if (empty) {
+ ml_delete(2L, FALSE);
+ empty = FALSE;
+ }
+ }
+ State = NORMAL;
+
+ if (eap->forceit)
+ curbuf->b_p_ai = !curbuf->b_p_ai;
+
+ /* "start" is set to eap->line2+1 unless that position is invalid (when
+ * eap->line2 pointed to the end of the buffer and nothing was appended)
+ * "end" is set to lnum when something has been appended, otherwise
+ * it is the same than "start" -- Acevedo */
+ curbuf->b_op_start.lnum = (eap->line2 < curbuf->b_ml.ml_line_count) ?
+ eap->line2 + 1 : curbuf->b_ml.ml_line_count;
+ if (eap->cmdidx != CMD_append)
+ --curbuf->b_op_start.lnum;
+ curbuf->b_op_end.lnum = (eap->line2 < lnum)
+ ? lnum : curbuf->b_op_start.lnum;
+ curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
+ curwin->w_cursor.lnum = lnum;
+ check_cursor_lnum();
+ beginline(BL_SOL | BL_FIX);
+
+ need_wait_return = FALSE; /* don't use wait_return() now */
+ ex_no_reprint = TRUE;
+}
+
+/*
+ * ":change"
+ */
+void ex_change(exarg_T *eap)
+{
+ linenr_T lnum;
+
+ if (eap->line2 >= eap->line1
+ && u_save(eap->line1 - 1, eap->line2 + 1) == FAIL)
+ return;
+
+ /* the ! flag toggles autoindent */
+ if (eap->forceit ? !curbuf->b_p_ai : curbuf->b_p_ai)
+ append_indent = get_indent_lnum(eap->line1);
+
+ for (lnum = eap->line2; lnum >= eap->line1; --lnum) {
+ if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */
+ break;
+ ml_delete(eap->line1, FALSE);
+ }
+
+ /* make sure the cursor is not beyond the end of the file now */
+ check_cursor_lnum();
+ deleted_lines_mark(eap->line1, (long)(eap->line2 - lnum));
+
+ /* ":append" on the line above the deleted lines. */
+ eap->line2 = eap->line1;
+ ex_append(eap);
+}
+
+void ex_z(exarg_T *eap)
+{
+ char_u *x;
+ int bigness;
+ char_u *kind;
+ int minus = 0;
+ linenr_T start, end, curs, i;
+ int j;
+ linenr_T lnum = eap->line2;
+
+ /* Vi compatible: ":z!" uses display height, without a count uses
+ * 'scroll' */
+ if (eap->forceit)
+ bigness = curwin->w_height;
+ else if (firstwin == lastwin)
+ bigness = curwin->w_p_scr * 2;
+ else
+ bigness = curwin->w_height - 3;
+ if (bigness < 1)
+ bigness = 1;
+
+ x = eap->arg;
+ kind = x;
+ if (*kind == '-' || *kind == '+' || *kind == '='
+ || *kind == '^' || *kind == '.')
+ ++x;
+ while (*x == '-' || *x == '+')
+ ++x;
+
+ if (*x != 0) {
+ if (!VIM_ISDIGIT(*x)) {
+ EMSG(_("E144: non-numeric argument to :z"));
+ return;
+ } else {
+ bigness = atoi((char *)x);
+ p_window = bigness;
+ if (*kind == '=')
+ bigness += 2;
+ }
+ }
+
+ /* the number of '-' and '+' multiplies the distance */
+ if (*kind == '-' || *kind == '+')
+ for (x = kind + 1; *x == *kind; ++x)
+ ;
+
+ switch (*kind) {
+ case '-':
+ start = lnum - bigness * (linenr_T)(x - kind) + 1;
+ end = start + bigness - 1;
+ curs = end;
+ break;
+
+ case '=':
+ start = lnum - (bigness + 1) / 2 + 1;
+ end = lnum + (bigness + 1) / 2 - 1;
+ curs = lnum;
+ minus = 1;
+ break;
+
+ case '^':
+ start = lnum - bigness * 2;
+ end = lnum - bigness;
+ curs = lnum - bigness;
+ break;
+
+ case '.':
+ start = lnum - (bigness + 1) / 2 + 1;
+ end = lnum + (bigness + 1) / 2 - 1;
+ curs = end;
+ break;
+
+ default: /* '+' */
+ start = lnum;
+ if (*kind == '+')
+ start += bigness * (linenr_T)(x - kind - 1) + 1;
+ else if (eap->addr_count == 0)
+ ++start;
+ end = start + bigness - 1;
+ curs = end;
+ break;
+ }
+
+ if (start < 1)
+ start = 1;
+
+ if (end > curbuf->b_ml.ml_line_count)
+ end = curbuf->b_ml.ml_line_count;
+
+ if (curs > curbuf->b_ml.ml_line_count)
+ curs = curbuf->b_ml.ml_line_count;
+
+ for (i = start; i <= end; i++) {
+ if (minus && i == lnum) {
+ msg_putchar('\n');
+
+ for (j = 1; j < Columns; j++)
+ msg_putchar('-');
+ }
+
+ print_line(i, eap->flags & EXFLAG_NR, eap->flags & EXFLAG_LIST);
+
+ if (minus && i == lnum) {
+ msg_putchar('\n');
+
+ for (j = 1; j < Columns; j++)
+ msg_putchar('-');
+ }
+ }
+
+ curwin->w_cursor.lnum = curs;
+ ex_no_reprint = TRUE;
+}
+
+/*
+ * Check if the restricted flag is set.
+ * If so, give an error message and return TRUE.
+ * Otherwise, return FALSE.
+ */
+int check_restricted(void)
+{
+ if (restricted) {
+ EMSG(_("E145: Shell commands not allowed in rvim"));
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Check if the secure flag is set (.exrc or .vimrc in current directory).
+ * If so, give an error message and return TRUE.
+ * Otherwise, return FALSE.
+ */
+int check_secure(void)
+{
+ if (secure) {
+ secure = 2;
+ EMSG(_(e_curdir));
+ return TRUE;
+ }
+#ifdef HAVE_SANDBOX
+ /*
+ * In the sandbox more things are not allowed, including the things
+ * disallowed in secure mode.
+ */
+ if (sandbox != 0) {
+ EMSG(_(e_sandbox));
+ return TRUE;
+ }
+#endif
+ return FALSE;
+}
+
+static char_u *old_sub = NULL; /* previous substitute pattern */
+static int global_need_beginline; /* call beginline() after ":g" */
+
+/* do_sub()
+ *
+ * Perform a substitution from line eap->line1 to line eap->line2 using the
+ * command pointed to by eap->arg which should be of the form:
+ *
+ * /pattern/substitution/{flags}
+ *
+ * The usual escapes are supported as described in the regexp docs.
+ */
+void do_sub(exarg_T *eap)
+{
+ linenr_T lnum;
+ long i = 0;
+ regmmatch_T regmatch;
+ static int do_all = FALSE; /* do multiple substitutions per line */
+ static int do_ask = FALSE; /* ask for confirmation */
+ static int do_count = FALSE; /* count only */
+ static int do_error = TRUE; /* if false, ignore errors */
+ static int do_print = FALSE; /* print last line with subs. */
+ static int do_list = FALSE; /* list last line with subs. */
+ static int do_number = FALSE; /* list last line with line nr*/
+ static int do_ic = 0; /* ignore case flag */
+ char_u *pat = NULL, *sub = NULL; /* init for GCC */
+ int delimiter;
+ int sublen;
+ int got_quit = FALSE;
+ int got_match = FALSE;
+ int temp;
+ int which_pat;
+ char_u *cmd;
+ int save_State;
+ linenr_T first_line = 0; /* first changed line */
+ linenr_T last_line= 0; /* below last changed line AFTER the
+ * change */
+ linenr_T old_line_count = curbuf->b_ml.ml_line_count;
+ linenr_T line2;
+ long nmatch; /* number of lines in match */
+ char_u *sub_firstline; /* allocated copy of first sub line */
+ int endcolumn = FALSE; /* cursor in last column when done */
+ pos_T old_cursor = curwin->w_cursor;
+ int start_nsubs;
+ int save_ma = 0;
+
+ cmd = eap->arg;
+ if (!global_busy) {
+ sub_nsubs = 0;
+ sub_nlines = 0;
+ }
+ start_nsubs = sub_nsubs;
+
+ if (eap->cmdidx == CMD_tilde)
+ which_pat = RE_LAST; /* use last used regexp */
+ else
+ which_pat = RE_SUBST; /* use last substitute regexp */
+
+ /* new pattern and substitution */
+ if (eap->cmd[0] == 's' && *cmd != NUL && !vim_iswhite(*cmd)
+ && vim_strchr((char_u *)"0123456789cegriIp|\"", *cmd) == NULL) {
+ /* don't accept alphanumeric for separator */
+ if (isalpha(*cmd)) {
+ EMSG(_("E146: Regular expressions can't be delimited by letters"));
+ return;
+ }
+ /*
+ * undocumented vi feature:
+ * "\/sub/" and "\?sub?" use last used search pattern (almost like
+ * //sub/r). "\&sub&" use last substitute pattern (like //sub/).
+ */
+ if (*cmd == '\\') {
+ ++cmd;
+ if (vim_strchr((char_u *)"/?&", *cmd) == NULL) {
+ EMSG(_(e_backslash));
+ return;
+ }
+ if (*cmd != '&')
+ which_pat = RE_SEARCH; /* use last '/' pattern */
+ pat = (char_u *)""; /* empty search pattern */
+ delimiter = *cmd++; /* remember delimiter character */
+ } else { /* find the end of the regexp */
+ if (p_altkeymap && curwin->w_p_rl)
+ lrF_sub(cmd);
+ which_pat = RE_LAST; /* use last used regexp */
+ delimiter = *cmd++; /* remember delimiter character */
+ pat = cmd; /* remember start of search pat */
+ cmd = skip_regexp(cmd, delimiter, p_magic, &eap->arg);
+ if (cmd[0] == delimiter) /* end delimiter found */
+ *cmd++ = NUL; /* replace it with a NUL */
+ }
+
+ /*
+ * Small incompatibility: vi sees '\n' as end of the command, but in
+ * Vim we want to use '\n' to find/substitute a NUL.
+ */
+ sub = cmd; /* remember the start of the substitution */
+
+ while (cmd[0]) {
+ if (cmd[0] == delimiter) { /* end delimiter found */
+ *cmd++ = NUL; /* replace it with a NUL */
+ break;
+ }
+ if (cmd[0] == '\\' && cmd[1] != 0) /* skip escaped characters */
+ ++cmd;
+ mb_ptr_adv(cmd);
+ }
+
+ if (!eap->skip) {
+ /* In POSIX vi ":s/pat/%/" uses the previous subst. string. */
+ if (STRCMP(sub, "%") == 0
+ && vim_strchr(p_cpo, CPO_SUBPERCENT) != NULL) {
+ if (old_sub == NULL) { /* there is no previous command */
+ EMSG(_(e_nopresub));
+ return;
+ }
+ sub = old_sub;
+ } else {
+ free(old_sub);
+ old_sub = vim_strsave(sub);
+ }
+ }
+ } else if (!eap->skip) { /* use previous pattern and substitution */
+ if (old_sub == NULL) { /* there is no previous command */
+ EMSG(_(e_nopresub));
+ return;
+ }
+ pat = NULL; /* search_regcomp() will use previous pattern */
+ sub = old_sub;
+
+ /* Vi compatibility quirk: repeating with ":s" keeps the cursor in the
+ * last column after using "$". */
+ endcolumn = (curwin->w_curswant == MAXCOL);
+ }
+
+ // Recognize ":%s/\n//" and turn it into a join command, which is much
+ // more efficient.
+ // TODO: find a generic solution to make line-joining operations more
+ // efficient, avoid allocating a string that grows in size.
+ if (pat != NULL
+ && strcmp((const char *)pat, "\\n") == 0
+ && *sub == NUL
+ && (*cmd == NUL || (cmd[1] == NUL
+ && (*cmd == 'g'
+ || *cmd == 'l'
+ || *cmd == 'p'
+ || *cmd == '#')))) {
+ curwin->w_cursor.lnum = eap->line1;
+ if (*cmd == 'l') {
+ eap->flags = EXFLAG_LIST;
+ } else if (*cmd == '#') {
+ eap->flags = EXFLAG_NR;
+ } else if (*cmd == 'p') {
+ eap->flags = EXFLAG_PRINT;
+ }
+
+ do_join(eap->line2 - eap->line1 + 1, FALSE, TRUE, FALSE);
+ sub_nlines = sub_nsubs = eap->line2 - eap->line1 + 1;
+ do_sub_msg(FALSE);
+ ex_may_print(eap);
+
+ return;
+ }
+
+ /*
+ * Find trailing options. When '&' is used, keep old options.
+ */
+ if (*cmd == '&')
+ ++cmd;
+ else {
+ if (!p_ed) {
+ if (p_gd) /* default is global on */
+ do_all = TRUE;
+ else
+ do_all = FALSE;
+ do_ask = FALSE;
+ }
+ do_error = TRUE;
+ do_print = FALSE;
+ do_count = FALSE;
+ do_number = FALSE;
+ do_ic = 0;
+ }
+ while (*cmd) {
+ /*
+ * Note that 'g' and 'c' are always inverted, also when p_ed is off.
+ * 'r' is never inverted.
+ */
+ if (*cmd == 'g')
+ do_all = !do_all;
+ else if (*cmd == 'c')
+ do_ask = !do_ask;
+ else if (*cmd == 'n')
+ do_count = TRUE;
+ else if (*cmd == 'e')
+ do_error = !do_error;
+ else if (*cmd == 'r') /* use last used regexp */
+ which_pat = RE_LAST;
+ else if (*cmd == 'p')
+ do_print = TRUE;
+ else if (*cmd == '#') {
+ do_print = TRUE;
+ do_number = TRUE;
+ } else if (*cmd == 'l') {
+ do_print = TRUE;
+ do_list = TRUE;
+ } else if (*cmd == 'i') /* ignore case */
+ do_ic = 'i';
+ else if (*cmd == 'I') /* don't ignore case */
+ do_ic = 'I';
+ else
+ break;
+ ++cmd;
+ }
+ if (do_count)
+ do_ask = FALSE;
+
+ /*
+ * check for a trailing count
+ */
+ cmd = skipwhite(cmd);
+ if (VIM_ISDIGIT(*cmd)) {
+ i = getdigits(&cmd);
+ if (i <= 0 && !eap->skip && do_error) {
+ EMSG(_(e_zerocount));
+ return;
+ }
+ eap->line1 = eap->line2;
+ eap->line2 += i - 1;
+ if (eap->line2 > curbuf->b_ml.ml_line_count)
+ eap->line2 = curbuf->b_ml.ml_line_count;
+ }
+
+ /*
+ * check for trailing command or garbage
+ */
+ cmd = skipwhite(cmd);
+ if (*cmd && *cmd != '"') { /* if not end-of-line or comment */
+ eap->nextcmd = check_nextcmd(cmd);
+ if (eap->nextcmd == NULL) {
+ EMSG(_(e_trailing));
+ return;
+ }
+ }
+
+ if (eap->skip) /* not executing commands, only parsing */
+ return;
+
+ if (!do_count && !curbuf->b_p_ma) {
+ /* Substitution is not allowed in non-'modifiable' buffer */
+ EMSG(_(e_modifiable));
+ return;
+ }
+
+ if (search_regcomp(pat, RE_SUBST, which_pat, SEARCH_HIS,
+ &regmatch) == FAIL) {
+ if (do_error)
+ EMSG(_(e_invcmd));
+ return;
+ }
+
+ /* the 'i' or 'I' flag overrules 'ignorecase' and 'smartcase' */
+ if (do_ic == 'i')
+ regmatch.rmm_ic = TRUE;
+ else if (do_ic == 'I')
+ regmatch.rmm_ic = FALSE;
+
+ sub_firstline = NULL;
+
+ /*
+ * ~ in the substitute pattern is replaced with the old pattern.
+ * We do it here once to avoid it to be replaced over and over again.
+ * But don't do it when it starts with "\=", then it's an expression.
+ */
+ if (!(sub[0] == '\\' && sub[1] == '='))
+ sub = regtilde(sub, p_magic);
+
+ /*
+ * Check for a match on each line.
+ */
+ line2 = eap->line2;
+ for (lnum = eap->line1; lnum <= line2 && !(got_quit
+ || aborting()
+ ); ++lnum) {
+ nmatch = vim_regexec_multi(&regmatch, curwin, curbuf, lnum,
+ (colnr_T)0, NULL);
+ if (nmatch) {
+ colnr_T copycol;
+ colnr_T matchcol;
+ colnr_T prev_matchcol = MAXCOL;
+ char_u *new_end, *new_start = NULL;
+ unsigned new_start_len = 0;
+ char_u *p1;
+ int did_sub = FALSE;
+ int lastone;
+ int len, copy_len, needed_len;
+ long nmatch_tl = 0; /* nr of lines matched below lnum */
+ int do_again; /* do it again after joining lines */
+ int skip_match = FALSE;
+ linenr_T sub_firstlnum; /* nr of first sub line */
+
+ /*
+ * The new text is build up step by step, to avoid too much
+ * copying. There are these pieces:
+ * sub_firstline The old text, unmodified.
+ * copycol Column in the old text where we started
+ * looking for a match; from here old text still
+ * needs to be copied to the new text.
+ * matchcol Column number of the old text where to look
+ * for the next match. It's just after the
+ * previous match or one further.
+ * prev_matchcol Column just after the previous match (if any).
+ * Mostly equal to matchcol, except for the first
+ * match and after skipping an empty match.
+ * regmatch.*pos Where the pattern matched in the old text.
+ * new_start The new text, all that has been produced so
+ * far.
+ * new_end The new text, where to append new text.
+ *
+ * lnum The line number where we found the start of
+ * the match. Can be below the line we searched
+ * when there is a \n before a \zs in the
+ * pattern.
+ * sub_firstlnum The line number in the buffer where to look
+ * for a match. Can be different from "lnum"
+ * when the pattern or substitute string contains
+ * line breaks.
+ *
+ * Special situations:
+ * - When the substitute string contains a line break, the part up
+ * to the line break is inserted in the text, but the copy of
+ * the original line is kept. "sub_firstlnum" is adjusted for
+ * the inserted lines.
+ * - When the matched pattern contains a line break, the old line
+ * is taken from the line at the end of the pattern. The lines
+ * in the match are deleted later, "sub_firstlnum" is adjusted
+ * accordingly.
+ *
+ * The new text is built up in new_start[]. It has some extra
+ * room to avoid using xmalloc()/free() too often. new_start_len is
+ * the length of the allocated memory at new_start.
+ *
+ * Make a copy of the old line, so it won't be taken away when
+ * updating the screen or handling a multi-line match. The "old_"
+ * pointers point into this copy.
+ */
+ sub_firstlnum = lnum;
+ copycol = 0;
+ matchcol = 0;
+
+ /* At first match, remember current cursor position. */
+ if (!got_match) {
+ setpcmark();
+ got_match = TRUE;
+ }
+
+ /*
+ * Loop until nothing more to replace in this line.
+ * 1. Handle match with empty string.
+ * 2. If do_ask is set, ask for confirmation.
+ * 3. substitute the string.
+ * 4. if do_all is set, find next match
+ * 5. break if there isn't another match in this line
+ */
+ for (;; ) {
+ /* Advance "lnum" to the line where the match starts. The
+ * match does not start in the first line when there is a line
+ * break before \zs. */
+ if (regmatch.startpos[0].lnum > 0) {
+ lnum += regmatch.startpos[0].lnum;
+ sub_firstlnum += regmatch.startpos[0].lnum;
+ nmatch -= regmatch.startpos[0].lnum;
+ free(sub_firstline);
+ sub_firstline = NULL;
+ }
+
+ if (sub_firstline == NULL) {
+ sub_firstline = vim_strsave(ml_get(sub_firstlnum));
+ }
+
+ /* Save the line number of the last change for the final
+ * cursor position (just like Vi). */
+ curwin->w_cursor.lnum = lnum;
+ do_again = FALSE;
+
+ /*
+ * 1. Match empty string does not count, except for first
+ * match. This reproduces the strange vi behaviour.
+ * This also catches endless loops.
+ */
+ if (matchcol == prev_matchcol
+ && regmatch.endpos[0].lnum == 0
+ && matchcol == regmatch.endpos[0].col) {
+ if (sub_firstline[matchcol] == NUL)
+ /* We already were at the end of the line. Don't look
+ * for a match in this line again. */
+ skip_match = TRUE;
+ else {
+ /* search for a match at next column */
+ if (has_mbyte)
+ matchcol += mb_ptr2len(sub_firstline + matchcol);
+ else
+ ++matchcol;
+ }
+ goto skip;
+ }
+
+ /* Normally we continue searching for a match just after the
+ * previous match. */
+ matchcol = regmatch.endpos[0].col;
+ prev_matchcol = matchcol;
+
+ /*
+ * 2. If do_count is set only increase the counter.
+ * If do_ask is set, ask for confirmation.
+ */
+ if (do_count) {
+ /* For a multi-line match, put matchcol at the NUL at
+ * the end of the line and set nmatch to one, so that
+ * we continue looking for a match on the next line.
+ * Avoids that ":s/\nB\@=//gc" get stuck. */
+ if (nmatch > 1) {
+ matchcol = (colnr_T)STRLEN(sub_firstline);
+ nmatch = 1;
+ skip_match = TRUE;
+ }
+ sub_nsubs++;
+ did_sub = TRUE;
+ /* Skip the substitution, unless an expression is used,
+ * then it is evaluated in the sandbox. */
+ if (!(sub[0] == '\\' && sub[1] == '='))
+ goto skip;
+ }
+
+ if (do_ask) {
+ int typed = 0;
+
+ /* change State to CONFIRM, so that the mouse works
+ * properly */
+ save_State = State;
+ State = CONFIRM;
+ setmouse(); /* disable mouse in xterm */
+ curwin->w_cursor.col = regmatch.startpos[0].col;
+
+ /* When 'cpoptions' contains "u" don't sync undo when
+ * asking for confirmation. */
+ if (vim_strchr(p_cpo, CPO_UNDO) != NULL)
+ ++no_u_sync;
+
+ /*
+ * Loop until 'y', 'n', 'q', CTRL-E or CTRL-Y typed.
+ */
+ while (do_ask) {
+ if (exmode_active) {
+ char_u *resp;
+ colnr_T sc, ec;
+
+ print_line_no_prefix(lnum, do_number, do_list);
+
+ getvcol(curwin, &curwin->w_cursor, &sc, NULL, NULL);
+ curwin->w_cursor.col = regmatch.endpos[0].col - 1;
+ getvcol(curwin, &curwin->w_cursor, NULL, NULL, &ec);
+ if (do_number || curwin->w_p_nu) {
+ int numw = number_width(curwin) + 1;
+ sc += numw;
+ ec += numw;
+ }
+ msg_start();
+ for (i = 0; i < (long)sc; ++i)
+ msg_putchar(' ');
+ for (; i <= (long)ec; ++i)
+ msg_putchar('^');
+
+ resp = getexmodeline('?', NULL, 0);
+ if (resp != NULL) {
+ typed = *resp;
+ free(resp);
+ }
+ } else {
+ char_u *orig_line = NULL;
+ int len_change = 0;
+ int save_p_fen = curwin->w_p_fen;
+
+ curwin->w_p_fen = FALSE;
+ /* Invert the matched string.
+ * Remove the inversion afterwards. */
+ temp = RedrawingDisabled;
+ RedrawingDisabled = 0;
+
+ if (new_start != NULL) {
+ /* There already was a substitution, we would
+ * like to show this to the user. We cannot
+ * really update the line, it would change
+ * what matches. Temporarily replace the line
+ * and change it back afterwards. */
+ orig_line = vim_strsave(ml_get(lnum));
+ if (orig_line != NULL) {
+ char_u *new_line = concat_str(new_start,
+ sub_firstline + copycol);
+
+ // Position the cursor relative to the end of the line, the
+ // previous substitute may have inserted or deleted characters
+ // before the cursor.
+ len_change = (int)STRLEN(new_line) - (int)STRLEN(orig_line);
+ curwin->w_cursor.col += len_change;
+ ml_replace(lnum, new_line, FALSE);
+ }
+ }
+
+ search_match_lines = regmatch.endpos[0].lnum
+ - regmatch.startpos[0].lnum;
+ search_match_endcol = regmatch.endpos[0].col
+ + len_change;
+ highlight_match = TRUE;
+
+ update_topline();
+ validate_cursor();
+ update_screen(SOME_VALID);
+ highlight_match = FALSE;
+ redraw_later(SOME_VALID);
+
+ curwin->w_p_fen = save_p_fen;
+ if (msg_row == Rows - 1)
+ msg_didout = FALSE; /* avoid a scroll-up */
+ msg_starthere();
+ i = msg_scroll;
+ msg_scroll = 0; /* truncate msg when
+ needed */
+ msg_no_more = TRUE;
+ /* write message same highlighting as for
+ * wait_return */
+ smsg_attr(hl_attr(HLF_R),
+ (char_u *)_("replace with %s (y/n/a/q/l/^E/^Y)?"), sub);
+ msg_no_more = FALSE;
+ msg_scroll = i;
+ showruler(TRUE);
+ windgoto(msg_row, msg_col);
+ RedrawingDisabled = temp;
+
+#ifdef USE_ON_FLY_SCROLL
+ dont_scroll = FALSE; /* allow scrolling here */
+#endif
+ ++no_mapping; /* don't map this key */
+ ++allow_keys; /* allow special keys */
+ typed = plain_vgetc();
+ --allow_keys;
+ --no_mapping;
+
+ /* clear the question */
+ msg_didout = FALSE; /* don't scroll up */
+ msg_col = 0;
+ gotocmdline(TRUE);
+
+ /* restore the line */
+ if (orig_line != NULL)
+ ml_replace(lnum, orig_line, FALSE);
+ }
+
+ need_wait_return = FALSE; /* no hit-return prompt */
+ if (typed == 'q' || typed == ESC || typed == Ctrl_C
+#ifdef UNIX
+ || typed == intr_char
+#endif
+ ) {
+ got_quit = TRUE;
+ break;
+ }
+ if (typed == 'n')
+ break;
+ if (typed == 'y')
+ break;
+ if (typed == 'l') {
+ /* last: replace and then stop */
+ do_all = FALSE;
+ line2 = lnum;
+ break;
+ }
+ if (typed == 'a') {
+ do_ask = FALSE;
+ break;
+ }
+ if (typed == Ctrl_E)
+ scrollup_clamp();
+ else if (typed == Ctrl_Y)
+ scrolldown_clamp();
+ }
+ State = save_State;
+ setmouse();
+ if (vim_strchr(p_cpo, CPO_UNDO) != NULL)
+ --no_u_sync;
+
+ if (typed == 'n') {
+ /* For a multi-line match, put matchcol at the NUL at
+ * the end of the line and set nmatch to one, so that
+ * we continue looking for a match on the next line.
+ * Avoids that ":%s/\nB\@=//gc" and ":%s/\n/,\r/gc"
+ * get stuck when pressing 'n'. */
+ if (nmatch > 1) {
+ matchcol = (colnr_T)STRLEN(sub_firstline);
+ skip_match = TRUE;
+ }
+ goto skip;
+ }
+ if (got_quit)
+ goto skip;
+ }
+
+ /* Move the cursor to the start of the match, so that we can
+ * use "\=col("."). */
+ curwin->w_cursor.col = regmatch.startpos[0].col;
+
+ /*
+ * 3. substitute the string.
+ */
+ if (do_count) {
+ /* prevent accidentally changing the buffer by a function */
+ save_ma = curbuf->b_p_ma;
+ curbuf->b_p_ma = FALSE;
+ sandbox++;
+ }
+ /* get length of substitution part */
+ sublen = vim_regsub_multi(&regmatch,
+ sub_firstlnum - regmatch.startpos[0].lnum,
+ sub, sub_firstline, FALSE, p_magic, TRUE);
+ if (do_count) {
+ curbuf->b_p_ma = save_ma;
+ sandbox--;
+ goto skip;
+ }
+
+ /* When the match included the "$" of the last line it may
+ * go beyond the last line of the buffer. */
+ if (nmatch > curbuf->b_ml.ml_line_count - sub_firstlnum + 1) {
+ nmatch = curbuf->b_ml.ml_line_count - sub_firstlnum + 1;
+ skip_match = TRUE;
+ }
+
+ /* Need room for:
+ * - result so far in new_start (not for first sub in line)
+ * - original text up to match
+ * - length of substituted part
+ * - original text after match
+ */
+ if (nmatch == 1)
+ p1 = sub_firstline;
+ else {
+ p1 = ml_get(sub_firstlnum + nmatch - 1);
+ nmatch_tl += nmatch - 1;
+ }
+ copy_len = regmatch.startpos[0].col - copycol;
+ needed_len = copy_len + ((unsigned)STRLEN(p1)
+ - regmatch.endpos[0].col) + sublen + 1;
+ if (new_start == NULL) {
+ /*
+ * Get some space for a temporary buffer to do the
+ * substitution into (and some extra space to avoid
+ * too many calls to xmalloc()/free()).
+ */
+ new_start_len = needed_len + 50;
+ new_start = xmalloc(new_start_len);
+ *new_start = NUL;
+ new_end = new_start;
+ } else {
+ /*
+ * Check if the temporary buffer is long enough to do the
+ * substitution into. If not, make it larger (with a bit
+ * extra to avoid too many calls to xmalloc()/free()).
+ */
+ len = (unsigned)STRLEN(new_start);
+ needed_len += len;
+ if (needed_len > (int)new_start_len) {
+ new_start_len = needed_len + 50;
+ new_start = xrealloc(new_start, new_start_len);
+ }
+ new_end = new_start + len;
+ }
+
+ /*
+ * copy the text up to the part that matched
+ */
+ memmove(new_end, sub_firstline + copycol, (size_t)copy_len);
+ new_end += copy_len;
+
+ (void)vim_regsub_multi(&regmatch,
+ sub_firstlnum - regmatch.startpos[0].lnum,
+ sub, new_end, TRUE, p_magic, TRUE);
+ sub_nsubs++;
+ did_sub = TRUE;
+
+ /* Move the cursor to the start of the line, to avoid that it
+ * is beyond the end of the line after the substitution. */
+ curwin->w_cursor.col = 0;
+
+ /* For a multi-line match, make a copy of the last matched
+ * line and continue in that one. */
+ if (nmatch > 1) {
+ sub_firstlnum += nmatch - 1;
+ free(sub_firstline);
+ sub_firstline = vim_strsave(ml_get(sub_firstlnum));
+ /* When going beyond the last line, stop substituting. */
+ if (sub_firstlnum <= line2)
+ do_again = TRUE;
+ else
+ do_all = FALSE;
+ }
+
+ /* Remember next character to be copied. */
+ copycol = regmatch.endpos[0].col;
+
+ if (skip_match) {
+ /* Already hit end of the buffer, sub_firstlnum is one
+ * less than what it ought to be. */
+ free(sub_firstline);
+ sub_firstline = vim_strsave((char_u *)"");
+ copycol = 0;
+ }
+
+ /*
+ * Now the trick is to replace CTRL-M chars with a real line
+ * break. This would make it impossible to insert a CTRL-M in
+ * the text. The line break can be avoided by preceding the
+ * CTRL-M with a backslash. To be able to insert a backslash,
+ * they must be doubled in the string and are halved here.
+ * That is Vi compatible.
+ */
+ for (p1 = new_end; *p1; ++p1) {
+ if (p1[0] == '\\' && p1[1] != NUL) /* remove backslash */
+ STRMOVE(p1, p1 + 1);
+ else if (*p1 == CAR) {
+ if (u_inssub(lnum) == OK) { /* prepare for undo */
+ *p1 = NUL; /* truncate up to the CR */
+ ml_append(lnum - 1, new_start,
+ (colnr_T)(p1 - new_start + 1), FALSE);
+ mark_adjust(lnum + 1, (linenr_T)MAXLNUM, 1L, 0L);
+ if (do_ask)
+ appended_lines(lnum - 1, 1L);
+ else {
+ if (first_line == 0)
+ first_line = lnum;
+ last_line = lnum + 1;
+ }
+ /* All line numbers increase. */
+ ++sub_firstlnum;
+ ++lnum;
+ ++line2;
+ /* move the cursor to the new line, like Vi */
+ ++curwin->w_cursor.lnum;
+ /* copy the rest */
+ STRMOVE(new_start, p1 + 1);
+ p1 = new_start - 1;
+ }
+ } else if (has_mbyte)
+ p1 += (*mb_ptr2len)(p1) - 1;
+ }
+
+ /*
+ * 4. If do_all is set, find next match.
+ * Prevent endless loop with patterns that match empty
+ * strings, e.g. :s/$/pat/g or :s/[a-z]* /(&)/g.
+ * But ":s/\n/#/" is OK.
+ */
+skip:
+ /* We already know that we did the last subst when we are at
+ * the end of the line, except that a pattern like
+ * "bar\|\nfoo" may match at the NUL. "lnum" can be below
+ * "line2" when there is a \zs in the pattern after a line
+ * break. */
+ lastone = (skip_match
+ || got_int
+ || got_quit
+ || lnum > line2
+ || !(do_all || do_again)
+ || (sub_firstline[matchcol] == NUL && nmatch <= 1
+ && !re_multiline(regmatch.regprog)));
+ nmatch = -1;
+
+ /*
+ * Replace the line in the buffer when needed. This is
+ * skipped when there are more matches.
+ * The check for nmatch_tl is needed for when multi-line
+ * matching must replace the lines before trying to do another
+ * match, otherwise "\@<=" won't work.
+ * When the match starts below where we start searching also
+ * need to replace the line first (using \zs after \n).
+ */
+ if (lastone
+ || nmatch_tl > 0
+ || (nmatch = vim_regexec_multi(&regmatch, curwin,
+ curbuf, sub_firstlnum,
+ matchcol, NULL)) == 0
+ || regmatch.startpos[0].lnum > 0) {
+ if (new_start != NULL) {
+ /*
+ * Copy the rest of the line, that didn't match.
+ * "matchcol" has to be adjusted, we use the end of
+ * the line as reference, because the substitute may
+ * have changed the number of characters. Same for
+ * "prev_matchcol".
+ */
+ STRCAT(new_start, sub_firstline + copycol);
+ matchcol = (colnr_T)STRLEN(sub_firstline) - matchcol;
+ prev_matchcol = (colnr_T)STRLEN(sub_firstline)
+ - prev_matchcol;
+
+ if (u_savesub(lnum) != OK)
+ break;
+ ml_replace(lnum, new_start, TRUE);
+
+ if (nmatch_tl > 0) {
+ /*
+ * Matched lines have now been substituted and are
+ * useless, delete them. The part after the match
+ * has been appended to new_start, we don't need
+ * it in the buffer.
+ */
+ ++lnum;
+ if (u_savedel(lnum, nmatch_tl) != OK)
+ break;
+ for (i = 0; i < nmatch_tl; ++i)
+ ml_delete(lnum, (int)FALSE);
+ mark_adjust(lnum, lnum + nmatch_tl - 1,
+ (long)MAXLNUM, -nmatch_tl);
+ if (do_ask)
+ deleted_lines(lnum, nmatch_tl);
+ --lnum;
+ line2 -= nmatch_tl; /* nr of lines decreases */
+ nmatch_tl = 0;
+ }
+
+ /* When asking, undo is saved each time, must also set
+ * changed flag each time. */
+ if (do_ask)
+ changed_bytes(lnum, 0);
+ else {
+ if (first_line == 0)
+ first_line = lnum;
+ last_line = lnum + 1;
+ }
+
+ sub_firstlnum = lnum;
+ free(sub_firstline); /* free the temp buffer */
+ sub_firstline = new_start;
+ new_start = NULL;
+ matchcol = (colnr_T)STRLEN(sub_firstline) - matchcol;
+ prev_matchcol = (colnr_T)STRLEN(sub_firstline)
+ - prev_matchcol;
+ copycol = 0;
+ }
+ if (nmatch == -1 && !lastone)
+ nmatch = vim_regexec_multi(&regmatch, curwin, curbuf,
+ sub_firstlnum, matchcol, NULL);
+
+ /*
+ * 5. break if there isn't another match in this line
+ */
+ if (nmatch <= 0) {
+ /* If the match found didn't start where we were
+ * searching, do the next search in the line where we
+ * found the match. */
+ if (nmatch == -1)
+ lnum -= regmatch.startpos[0].lnum;
+ break;
+ }
+ }
+
+ line_breakcheck();
+ }
+
+ if (did_sub)
+ ++sub_nlines;
+ free(new_start); /* for when substitute was cancelled */
+ free(sub_firstline); /* free the copy of the original line */
+ sub_firstline = NULL;
+ }
+
+ line_breakcheck();
+ }
+
+ if (first_line != 0) {
+ /* Need to subtract the number of added lines from "last_line" to get
+ * the line number before the change (same as adding the number of
+ * deleted lines). */
+ i = curbuf->b_ml.ml_line_count - old_line_count;
+ changed_lines(first_line, 0, last_line - i, i);
+ }
+
+ free(sub_firstline); /* may have to free allocated copy of the line */
+
+ /* ":s/pat//n" doesn't move the cursor */
+ if (do_count)
+ curwin->w_cursor = old_cursor;
+
+ if (sub_nsubs > start_nsubs) {
+ /* Set the '[ and '] marks. */
+ curbuf->b_op_start.lnum = eap->line1;
+ curbuf->b_op_end.lnum = line2;
+ curbuf->b_op_start.col = curbuf->b_op_end.col = 0;
+
+ if (!global_busy) {
+ if (!do_ask) { /* when interactive leave cursor on the match */
+ if (endcolumn)
+ coladvance((colnr_T)MAXCOL);
+ else
+ beginline(BL_WHITE | BL_FIX);
+ }
+ if (!do_sub_msg(do_count) && do_ask)
+ MSG("");
+ } else
+ global_need_beginline = TRUE;
+ if (do_print)
+ print_line(curwin->w_cursor.lnum, do_number, do_list);
+ } else if (!global_busy) {
+ if (got_int) /* interrupted */
+ EMSG(_(e_interr));
+ else if (got_match) /* did find something but nothing substituted */
+ MSG("");
+ else if (do_error) /* nothing found */
+ EMSG2(_(e_patnotf2), get_search_pat());
+ }
+
+ if (do_ask && hasAnyFolding(curwin))
+ /* Cursor position may require updating */
+ changed_window_setting();
+
+ vim_regfree(regmatch.regprog);
+}
+
+/*
+ * Give message for number of substitutions.
+ * Can also be used after a ":global" command.
+ * Return TRUE if a message was given.
+ */
+int
+do_sub_msg (
+ int count_only /* used 'n' flag for ":s" */
+)
+{
+ /*
+ * Only report substitutions when:
+ * - more than 'report' substitutions
+ * - command was typed by user, or number of changed lines > 'report'
+ * - giving messages is not disabled by 'lazyredraw'
+ */
+ if (((sub_nsubs > p_report && (KeyTyped || sub_nlines > 1 || p_report < 1))
+ || count_only)
+ && messaging()) {
+ if (got_int)
+ STRCPY(msg_buf, _("(Interrupted) "));
+ else
+ *msg_buf = NUL;
+ if (sub_nsubs == 1)
+ vim_snprintf_add((char *)msg_buf, sizeof(msg_buf),
+ "%s", count_only ? _("1 match") : _("1 substitution"));
+ else
+ vim_snprintf_add((char *)msg_buf, sizeof(msg_buf),
+ count_only ? _("%" PRId64 " matches")
+ : _("%" PRId64 " substitutions"),
+ (int64_t)sub_nsubs);
+ if (sub_nlines == 1)
+ vim_snprintf_add((char *)msg_buf, sizeof(msg_buf),
+ "%s", _(" on 1 line"));
+ else
+ vim_snprintf_add((char *)msg_buf, sizeof(msg_buf),
+ _(" on %" PRId64 " lines"), (int64_t)sub_nlines);
+ if (msg(msg_buf))
+ /* save message to display it after redraw */
+ set_keep_msg(msg_buf, 0);
+ return TRUE;
+ }
+ if (got_int) {
+ EMSG(_(e_interr));
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Execute a global command of the form:
+ *
+ * g/pattern/X : execute X on all lines where pattern matches
+ * v/pattern/X : execute X on all lines where pattern does not match
+ *
+ * where 'X' is an EX command
+ *
+ * The command character (as well as the trailing slash) is optional, and
+ * is assumed to be 'p' if missing.
+ *
+ * This is implemented in two passes: first we scan the file for the pattern and
+ * set a mark for each line that (not) matches. Secondly we execute the command
+ * for each line that has a mark. This is required because after deleting
+ * lines we do not know where to search for the next match.
+ */
+void ex_global(exarg_T *eap)
+{
+ linenr_T lnum; /* line number according to old situation */
+ int ndone = 0;
+ int type; /* first char of cmd: 'v' or 'g' */
+ char_u *cmd; /* command argument */
+
+ char_u delim; /* delimiter, normally '/' */
+ char_u *pat;
+ regmmatch_T regmatch;
+ int match;
+ int which_pat;
+
+ if (global_busy) {
+ EMSG(_("E147: Cannot do :global recursive")); /* will increment global_busy */
+ return;
+ }
+
+ if (eap->forceit) /* ":global!" is like ":vglobal" */
+ type = 'v';
+ else
+ type = *eap->cmd;
+ cmd = eap->arg;
+ which_pat = RE_LAST; /* default: use last used regexp */
+
+ /*
+ * undocumented vi feature:
+ * "\/" and "\?": use previous search pattern.
+ * "\&": use previous substitute pattern.
+ */
+ if (*cmd == '\\') {
+ ++cmd;
+ if (vim_strchr((char_u *)"/?&", *cmd) == NULL) {
+ EMSG(_(e_backslash));
+ return;
+ }
+ if (*cmd == '&')
+ which_pat = RE_SUBST; /* use previous substitute pattern */
+ else
+ which_pat = RE_SEARCH; /* use previous search pattern */
+ ++cmd;
+ pat = (char_u *)"";
+ } else if (*cmd == NUL) {
+ EMSG(_("E148: Regular expression missing from global"));
+ return;
+ } else {
+ delim = *cmd; /* get the delimiter */
+ if (delim)
+ ++cmd; /* skip delimiter if there is one */
+ pat = cmd; /* remember start of pattern */
+ cmd = skip_regexp(cmd, delim, p_magic, &eap->arg);
+ if (cmd[0] == delim) /* end delimiter found */
+ *cmd++ = NUL; /* replace it with a NUL */
+ }
+
+ if (p_altkeymap && curwin->w_p_rl)
+ lrFswap(pat,0);
+
+ if (search_regcomp(pat, RE_BOTH, which_pat, SEARCH_HIS, &regmatch) == FAIL) {
+ EMSG(_(e_invcmd));
+ return;
+ }
+
+ /*
+ * pass 1: set marks for each (not) matching line
+ */
+ for (lnum = eap->line1; lnum <= eap->line2 && !got_int; ++lnum) {
+ /* a match on this line? */
+ match = vim_regexec_multi(&regmatch, curwin, curbuf, lnum,
+ (colnr_T)0, NULL);
+ if ((type == 'g' && match) || (type == 'v' && !match)) {
+ ml_setmarked(lnum);
+ ndone++;
+ }
+ line_breakcheck();
+ }
+
+ /*
+ * pass 2: execute the command for each line that has been marked
+ */
+ if (got_int)
+ MSG(_(e_interr));
+ else if (ndone == 0) {
+ if (type == 'v')
+ smsg((char_u *)_("Pattern found in every line: %s"), pat);
+ else
+ smsg((char_u *)_("Pattern not found: %s"), pat);
+ } else
+ global_exe(cmd);
+
+ ml_clearmarked(); /* clear rest of the marks */
+ vim_regfree(regmatch.regprog);
+}
+
+/*
+ * Execute "cmd" on lines marked with ml_setmarked().
+ */
+void global_exe(char_u *cmd)
+{
+ linenr_T old_lcount; /* b_ml.ml_line_count before the command */
+ buf_T *old_buf = curbuf; /* remember what buffer we started in */
+ linenr_T lnum; /* line number according to old situation */
+
+ /*
+ * Set current position only once for a global command.
+ * If global_busy is set, setpcmark() will not do anything.
+ * If there is an error, global_busy will be incremented.
+ */
+ setpcmark();
+
+ /* When the command writes a message, don't overwrite the command. */
+ msg_didout = TRUE;
+
+ sub_nsubs = 0;
+ sub_nlines = 0;
+ global_need_beginline = FALSE;
+ global_busy = 1;
+ old_lcount = curbuf->b_ml.ml_line_count;
+ while (!got_int && (lnum = ml_firstmarked()) != 0 && global_busy == 1) {
+ curwin->w_cursor.lnum = lnum;
+ curwin->w_cursor.col = 0;
+ if (*cmd == NUL || *cmd == '\n')
+ do_cmdline((char_u *)"p", NULL, NULL, DOCMD_NOWAIT);
+ else
+ do_cmdline(cmd, NULL, NULL, DOCMD_NOWAIT);
+ ui_breakcheck();
+ }
+
+ global_busy = 0;
+ if (global_need_beginline)
+ beginline(BL_WHITE | BL_FIX);
+ else
+ check_cursor(); /* cursor may be beyond the end of the line */
+
+ /* the cursor may not have moved in the text but a change in a previous
+ * line may move it on the screen */
+ changed_line_abv_curs();
+
+ /* If it looks like no message was written, allow overwriting the
+ * command with the report for number of changes. */
+ if (msg_col == 0 && msg_scrolled == 0)
+ msg_didout = FALSE;
+
+ /* If substitutes done, report number of substitutes, otherwise report
+ * number of extra or deleted lines.
+ * Don't report extra or deleted lines in the edge case where the buffer
+ * we are in after execution is different from the buffer we started in. */
+ if (!do_sub_msg(FALSE) && curbuf == old_buf)
+ msgmore(curbuf->b_ml.ml_line_count - old_lcount);
+}
+
+int read_viminfo_sub_string(vir_T *virp, int force)
+{
+ if (force)
+ free(old_sub);
+ if (force || old_sub == NULL)
+ old_sub = viminfo_readstring(virp, 1, TRUE);
+ return viminfo_readline(virp);
+}
+
+void write_viminfo_sub_string(FILE *fp)
+{
+ if (get_viminfo_parameter('/') != 0 && old_sub != NULL) {
+ fputs(_("\n# Last Substitute String:\n$"), fp);
+ viminfo_writestring(fp, old_sub);
+ }
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+void free_old_sub(void)
+{
+ free(old_sub);
+}
+
+#endif
+
+/*
+ * Set up for a tagpreview.
+ * Return TRUE when it was created.
+ */
+int
+prepare_tagpreview (
+ int undo_sync /* sync undo when leaving the window */
+)
+{
+ win_T *wp;
+
+
+ /*
+ * If there is already a preview window open, use that one.
+ */
+ if (!curwin->w_p_pvw) {
+ for (wp = firstwin; wp != NULL; wp = wp->w_next)
+ if (wp->w_p_pvw)
+ break;
+ if (wp != NULL)
+ win_enter(wp, undo_sync);
+ else {
+ /*
+ * There is no preview window open yet. Create one.
+ */
+ if (win_split(g_do_tagpreview > 0 ? g_do_tagpreview : 0, 0)
+ == FAIL)
+ return FALSE;
+ curwin->w_p_pvw = TRUE;
+ curwin->w_p_wfh = TRUE;
+ RESET_BINDING(curwin); /* don't take over 'scrollbind'
+ and 'cursorbind' */
+ curwin->w_p_diff = FALSE; /* no 'diff' */
+ curwin->w_p_fdc = 0; /* no 'foldcolumn' */
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+
+
+/*
+ * ":help": open a read-only window on a help file
+ */
+void ex_help(exarg_T *eap)
+{
+ char_u *arg;
+ char_u *tag;
+ FILE *helpfd; /* file descriptor of help file */
+ int n;
+ int i;
+ win_T *wp;
+ int num_matches;
+ char_u **matches;
+ char_u *p;
+ int empty_fnum = 0;
+ int alt_fnum = 0;
+ buf_T *buf;
+ int len;
+ char_u *lang;
+ int old_KeyTyped = KeyTyped;
+
+ if (eap != NULL) {
+ /*
+ * A ":help" command ends at the first LF, or at a '|' that is
+ * followed by some text. Set nextcmd to the following command.
+ */
+ for (arg = eap->arg; *arg; ++arg) {
+ if (*arg == '\n' || *arg == '\r'
+ || (*arg == '|' && arg[1] != NUL && arg[1] != '|')) {
+ *arg++ = NUL;
+ eap->nextcmd = arg;
+ break;
+ }
+ }
+ arg = eap->arg;
+
+ if (eap->forceit && *arg == NUL && !curbuf->b_help) {
+ EMSG(_("E478: Don't panic!"));
+ return;
+ }
+
+ if (eap->skip) /* not executing commands */
+ return;
+ } else
+ arg = (char_u *)"";
+
+ /* remove trailing blanks */
+ p = arg + STRLEN(arg) - 1;
+ while (p > arg && vim_iswhite(*p) && p[-1] != '\\')
+ *p-- = NUL;
+
+ /* Check for a specified language */
+ lang = check_help_lang(arg);
+
+ /* When no argument given go to the index. */
+ if (*arg == NUL)
+ arg = (char_u *)"help.txt";
+
+ /*
+ * Check if there is a match for the argument.
+ */
+ n = find_help_tags(arg, &num_matches, &matches,
+ eap != NULL && eap->forceit);
+
+ i = 0;
+ if (n != FAIL && lang != NULL)
+ /* Find first item with the requested language. */
+ for (i = 0; i < num_matches; ++i) {
+ len = (int)STRLEN(matches[i]);
+ if (len > 3 && matches[i][len - 3] == '@'
+ && STRICMP(matches[i] + len - 2, lang) == 0)
+ break;
+ }
+ if (i >= num_matches || n == FAIL) {
+ if (lang != NULL)
+ EMSG3(_("E661: Sorry, no '%s' help for %s"), lang, arg);
+ else
+ EMSG2(_("E149: Sorry, no help for %s"), arg);
+ if (n != FAIL)
+ FreeWild(num_matches, matches);
+ return;
+ }
+
+ /* The first match (in the requested language) is the best match. */
+ tag = vim_strsave(matches[i]);
+ FreeWild(num_matches, matches);
+
+
+ /*
+ * Re-use an existing help window or open a new one.
+ * Always open a new one for ":tab help".
+ */
+ if (!curwin->w_buffer->b_help
+ || cmdmod.tab != 0
+ ) {
+ if (cmdmod.tab != 0)
+ wp = NULL;
+ else
+ for (wp = firstwin; wp != NULL; wp = wp->w_next)
+ if (wp->w_buffer != NULL && wp->w_buffer->b_help)
+ break;
+ if (wp != NULL && wp->w_buffer->b_nwindows > 0)
+ win_enter(wp, TRUE);
+ else {
+ /*
+ * There is no help window yet.
+ * Try to open the file specified by the "helpfile" option.
+ */
+ if ((helpfd = mch_fopen((char *)p_hf, READBIN)) == NULL) {
+ smsg((char_u *)_("Sorry, help file \"%s\" not found"), p_hf);
+ goto erret;
+ }
+ fclose(helpfd);
+
+ /* Split off help window; put it at far top if no position
+ * specified, the current window is vertically split and
+ * narrow. */
+ n = WSP_HELP;
+ if (cmdmod.split == 0 && curwin->w_width != Columns
+ && curwin->w_width < 80)
+ n |= WSP_TOP;
+ if (win_split(0, n) == FAIL)
+ goto erret;
+
+ if (curwin->w_height < p_hh)
+ win_setheight((int)p_hh);
+
+ /*
+ * Open help file (do_ecmd() will set b_help flag, readfile() will
+ * set b_p_ro flag).
+ * Set the alternate file to the previously edited file.
+ */
+ alt_fnum = curbuf->b_fnum;
+ (void)do_ecmd(0, NULL, NULL, NULL, ECMD_LASTL,
+ ECMD_HIDE + ECMD_SET_HELP,
+ NULL /* buffer is still open, don't store info */
+ );
+ if (!cmdmod.keepalt)
+ curwin->w_alt_fnum = alt_fnum;
+ empty_fnum = curbuf->b_fnum;
+ }
+ }
+
+ if (!p_im)
+ restart_edit = 0; /* don't want insert mode in help file */
+
+ /* Restore KeyTyped, setting 'filetype=help' may reset it.
+ * It is needed for do_tag top open folds under the cursor. */
+ KeyTyped = old_KeyTyped;
+
+ if (tag != NULL)
+ do_tag(tag, DT_HELP, 1, FALSE, TRUE);
+
+ /* Delete the empty buffer if we're not using it. Careful: autocommands
+ * may have jumped to another window, check that the buffer is not in a
+ * window. */
+ if (empty_fnum != 0 && curbuf->b_fnum != empty_fnum) {
+ buf = buflist_findnr(empty_fnum);
+ if (buf != NULL && buf->b_nwindows == 0)
+ wipe_buffer(buf, TRUE);
+ }
+
+ /* keep the previous alternate file */
+ if (alt_fnum != 0 && curwin->w_alt_fnum == empty_fnum && !cmdmod.keepalt)
+ curwin->w_alt_fnum = alt_fnum;
+
+erret:
+ free(tag);
+}
+
+
+/*
+ * In an argument search for a language specifiers in the form "@xx".
+ * Changes the "@" to NUL if found, and returns a pointer to "xx".
+ * Returns NULL if not found.
+ */
+char_u *check_help_lang(char_u *arg)
+{
+ int len = (int)STRLEN(arg);
+
+ if (len >= 3 && arg[len - 3] == '@' && ASCII_ISALPHA(arg[len - 2])
+ && ASCII_ISALPHA(arg[len - 1])) {
+ arg[len - 3] = NUL; /* remove the '@' */
+ return arg + len - 2;
+ }
+ return NULL;
+}
+
+/*
+ * Return a heuristic indicating how well the given string matches. The
+ * smaller the number, the better the match. This is the order of priorities,
+ * from best match to worst match:
+ * - Match with least alpha-numeric characters is better.
+ * - Match with least total characters is better.
+ * - Match towards the start is better.
+ * - Match starting with "+" is worse (feature instead of command)
+ * Assumption is made that the matched_string passed has already been found to
+ * match some string for which help is requested. webb.
+ */
+int
+help_heuristic (
+ char_u *matched_string,
+ int offset, /* offset for match */
+ int wrong_case /* no matching case */
+)
+{
+ int num_letters;
+ char_u *p;
+
+ num_letters = 0;
+ for (p = matched_string; *p; p++)
+ if (ASCII_ISALNUM(*p))
+ num_letters++;
+
+ /*
+ * Multiply the number of letters by 100 to give it a much bigger
+ * weighting than the number of characters.
+ * If there only is a match while ignoring case, add 5000.
+ * If the match starts in the middle of a word, add 10000 to put it
+ * somewhere in the last half.
+ * If the match is more than 2 chars from the start, multiply by 200 to
+ * put it after matches at the start.
+ */
+ if (ASCII_ISALNUM(matched_string[offset]) && offset > 0
+ && ASCII_ISALNUM(matched_string[offset - 1]))
+ offset += 10000;
+ else if (offset > 2)
+ offset *= 200;
+ if (wrong_case)
+ offset += 5000;
+ /* Features are less interesting than the subjects themselves, but "+"
+ * alone is not a feature. */
+ if (matched_string[0] == '+' && matched_string[1] != NUL)
+ offset += 100;
+ return (int)(100 * num_letters + STRLEN(matched_string) + offset);
+}
+
+/*
+ * Compare functions for qsort() below, that checks the help heuristics number
+ * that has been put after the tagname by find_tags().
+ */
+static int help_compare(const void *s1, const void *s2)
+{
+ char *p1;
+ char *p2;
+
+ p1 = *(char **)s1 + strlen(*(char **)s1) + 1;
+ p2 = *(char **)s2 + strlen(*(char **)s2) + 1;
+ return strcmp(p1, p2);
+}
+
+/*
+ * Find all help tags matching "arg", sort them and return in matches[], with
+ * the number of matches in num_matches.
+ * The matches will be sorted with a "best" match algorithm.
+ * When "keep_lang" is TRUE try keeping the language of the current buffer.
+ */
+int find_help_tags(char_u *arg, int *num_matches, char_u ***matches, int keep_lang)
+{
+ char_u *s, *d;
+ int i;
+ static char *(mtable[]) = {"*", "g*", "[*", "]*", ":*",
+ "/*", "/\\*", "\"*", "**",
+ "cpo-*", "/\\(\\)", "/\\%(\\)",
+ "?", ":?", "?<CR>", "g?", "g?g?", "g??", "z?",
+ "/\\?", "/\\z(\\)", "\\=", ":s\\=",
+ "[count]", "[quotex]", "[range]",
+ "[pattern]", "\\|", "\\%$",
+ "s/\\~", "s/\\U", "s/\\L",
+ "s/\\1", "s/\\2", "s/\\3", "s/\\9"};
+ static char *(rtable[]) = {"star", "gstar", "[star", "]star", ":star",
+ "/star", "/\\\\star", "quotestar", "starstar",
+ "cpo-star", "/\\\\(\\\\)", "/\\\\%(\\\\)",
+ "?", ":?", "?<CR>", "g?", "g?g?", "g??", "z?",
+ "/\\\\?", "/\\\\z(\\\\)", "\\\\=", ":s\\\\=",
+ "\\[count]", "\\[quotex]", "\\[range]",
+ "\\[pattern]", "\\\\bar", "/\\\\%\\$",
+ "s/\\\\\\~", "s/\\\\U", "s/\\\\L",
+ "s/\\\\1", "s/\\\\2", "s/\\\\3", "s/\\\\9"};
+ int flags;
+
+ d = IObuff; /* assume IObuff is long enough! */
+
+ /*
+ * Recognize a few exceptions to the rule. Some strings that contain '*'
+ * with "star". Otherwise '*' is recognized as a wildcard.
+ */
+ for (i = (int)(sizeof(mtable) / sizeof(char *)); --i >= 0; )
+ if (STRCMP(arg, mtable[i]) == 0) {
+ STRCPY(d, rtable[i]);
+ break;
+ }
+
+ if (i < 0) { /* no match in table */
+ /* Replace "\S" with "/\\S", etc. Otherwise every tag is matched.
+ * Also replace "\%^" and "\%(", they match every tag too.
+ * Also "\zs", "\z1", etc.
+ * Also "\@<", "\@=", "\@<=", etc.
+ * And also "\_$" and "\_^". */
+ if (arg[0] == '\\'
+ && ((arg[1] != NUL && arg[2] == NUL)
+ || (vim_strchr((char_u *)"%_z@", arg[1]) != NULL
+ && arg[2] != NUL))) {
+ STRCPY(d, "/\\\\");
+ STRCPY(d + 3, arg + 1);
+ /* Check for "/\\_$", should be "/\\_\$" */
+ if (d[3] == '_' && d[4] == '$')
+ STRCPY(d + 4, "\\$");
+ } else {
+ /* Replace:
+ * "[:...:]" with "\[:...:]"
+ * "[++...]" with "\[++...]"
+ * "\{" with "\\{" -- matching "} \}"
+ */
+ if ((arg[0] == '[' && (arg[1] == ':'
+ || (arg[1] == '+' && arg[2] == '+')))
+ || (arg[0] == '\\' && arg[1] == '{'))
+ *d++ = '\\';
+
+ for (s = arg; *s; ++s) {
+ /*
+ * Replace "|" with "bar" and '"' with "quote" to match the name of
+ * the tags for these commands.
+ * Replace "*" with ".*" and "?" with "." to match command line
+ * completion.
+ * Insert a backslash before '~', '$' and '.' to avoid their
+ * special meaning.
+ */
+ if (d - IObuff > IOSIZE - 10) /* getting too long!? */
+ break;
+ switch (*s) {
+ case '|': STRCPY(d, "bar");
+ d += 3;
+ continue;
+ case '"': STRCPY(d, "quote");
+ d += 5;
+ continue;
+ case '*': *d++ = '.';
+ break;
+ case '?': *d++ = '.';
+ continue;
+ case '$':
+ case '.':
+ case '~': *d++ = '\\';
+ break;
+ }
+
+ /*
+ * Replace "^x" by "CTRL-X". Don't do this for "^_" to make
+ * ":help i_^_CTRL-D" work.
+ * Insert '-' before and after "CTRL-X" when applicable.
+ */
+ if (*s < ' ' || (*s == '^' && s[1] && (ASCII_ISALPHA(s[1])
+ || vim_strchr((char_u *)
+ "?@[\\]^",
+ s[1]) != NULL))) {
+ if (d > IObuff && d[-1] != '_' && d[-1] != '\\')
+ *d++ = '_'; /* prepend a '_' to make x_CTRL-x */
+ STRCPY(d, "CTRL-");
+ d += 5;
+ if (*s < ' ') {
+ *d++ = *s + '@';
+ if (d[-1] == '\\')
+ *d++ = '\\'; /* double a backslash */
+ } else
+ *d++ = *++s;
+ if (s[1] != NUL && s[1] != '_')
+ *d++ = '_'; /* append a '_' */
+ continue;
+ } else if (*s == '^') /* "^" or "CTRL-^" or "^_" */
+ *d++ = '\\';
+
+ /*
+ * Insert a backslash before a backslash after a slash, for search
+ * pattern tags: "/\|" --> "/\\|".
+ */
+ else if (s[0] == '\\' && s[1] != '\\'
+ && *arg == '/' && s == arg + 1)
+ *d++ = '\\';
+
+ /* "CTRL-\_" -> "CTRL-\\_" to avoid the special meaning of "\_" in
+ * "CTRL-\_CTRL-N" */
+ if (STRNICMP(s, "CTRL-\\_", 7) == 0) {
+ STRCPY(d, "CTRL-\\\\");
+ d += 7;
+ s += 6;
+ }
+
+ *d++ = *s;
+
+ /*
+ * If tag starts with ', toss everything after a second '. Fixes
+ * CTRL-] on 'option'. (would include the trailing '.').
+ */
+ if (*s == '\'' && s > arg && *arg == '\'')
+ break;
+ }
+ *d = NUL;
+
+ if (*IObuff == '`') {
+ if (d > IObuff + 2 && d[-1] == '`') {
+ /* remove the backticks from `command` */
+ memmove(IObuff, IObuff + 1, STRLEN(IObuff));
+ d[-2] = NUL;
+ } else if (d > IObuff + 3 && d[-2] == '`' && d[-1] == ',') {
+ /* remove the backticks and comma from `command`, */
+ memmove(IObuff, IObuff + 1, STRLEN(IObuff));
+ d[-3] = NUL;
+ } else if (d > IObuff + 4 && d[-3] == '`'
+ && d[-2] == '\\' && d[-1] == '.') {
+ /* remove the backticks and dot from `command`\. */
+ memmove(IObuff, IObuff + 1, STRLEN(IObuff));
+ d[-4] = NUL;
+ }
+ }
+ }
+ }
+
+ *matches = (char_u **)"";
+ *num_matches = 0;
+ flags = TAG_HELP | TAG_REGEXP | TAG_NAMES | TAG_VERBOSE;
+ if (keep_lang)
+ flags |= TAG_KEEP_LANG;
+ if (find_tags(IObuff, num_matches, matches, flags, (int)MAXCOL, NULL) == OK
+ && *num_matches > 0) {
+ /* Sort the matches found on the heuristic number that is after the
+ * tag name. */
+ qsort((void *)*matches, (size_t)*num_matches,
+ sizeof(char_u *), help_compare);
+ /* Delete more than TAG_MANY to reduce the size of the listing. */
+ while (*num_matches > TAG_MANY)
+ free((*matches)[--*num_matches]);
+ }
+ return OK;
+}
+
+/*
+ * After reading a help file: May cleanup a help buffer when syntax
+ * highlighting is not used.
+ */
+void fix_help_buffer(void)
+{
+ linenr_T lnum;
+ char_u *line;
+ int in_example = FALSE;
+ int len;
+ char_u *fname;
+ char_u *p;
+ char_u *rt;
+ int mustfree;
+
+ /* set filetype to "help". */
+ set_option_value((char_u *)"ft", 0L, (char_u *)"help", OPT_LOCAL);
+
+ if (!syntax_present(curwin)) {
+ for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) {
+ line = ml_get_buf(curbuf, lnum, FALSE);
+ len = (int)STRLEN(line);
+ if (in_example && len > 0 && !vim_iswhite(line[0])) {
+ /* End of example: non-white or '<' in first column. */
+ if (line[0] == '<') {
+ /* blank-out a '<' in the first column */
+ line = ml_get_buf(curbuf, lnum, TRUE);
+ line[0] = ' ';
+ }
+ in_example = FALSE;
+ }
+ if (!in_example && len > 0) {
+ if (line[len - 1] == '>' && (len == 1 || line[len - 2] == ' ')) {
+ /* blank-out a '>' in the last column (start of example) */
+ line = ml_get_buf(curbuf, lnum, TRUE);
+ line[len - 1] = ' ';
+ in_example = TRUE;
+ } else if (line[len - 1] == '~') {
+ /* blank-out a '~' at the end of line (header marker) */
+ line = ml_get_buf(curbuf, lnum, TRUE);
+ line[len - 1] = ' ';
+ }
+ }
+ }
+ }
+
+ /*
+ * In the "help.txt" and "help.abx" file, add the locally added help
+ * files. This uses the very first line in the help file.
+ */
+ fname = path_tail(curbuf->b_fname);
+ if (fnamecmp(fname, "help.txt") == 0
+ || (fnamencmp(fname, "help.", 5) == 0
+ && ASCII_ISALPHA(fname[5])
+ && ASCII_ISALPHA(fname[6])
+ && TOLOWER_ASC(fname[7]) == 'x'
+ && fname[8] == NUL)
+ ) {
+ for (lnum = 1; lnum < curbuf->b_ml.ml_line_count; ++lnum) {
+ line = ml_get_buf(curbuf, lnum, FALSE);
+ if (strstr((char *)line, "*local-additions*") == NULL)
+ continue;
+
+ /* Go through all directories in 'runtimepath', skipping
+ * $VIMRUNTIME. */
+ p = p_rtp;
+ while (*p != NUL) {
+ copy_option_part(&p, NameBuff, MAXPATHL, ",");
+ mustfree = FALSE;
+ rt = vim_getenv((char_u *)"VIMRUNTIME", &mustfree);
+ if (path_full_compare(rt, NameBuff, FALSE) != kEqualFiles) {
+ int fcount;
+ char_u **fnames;
+ FILE *fd;
+ char_u *s;
+ int fi;
+ vimconv_T vc;
+ char_u *cp;
+
+ /* Find all "doc/ *.txt" files in this directory. */
+ add_pathsep(NameBuff);
+ STRCAT(NameBuff, "doc/*.??[tx]");
+ if (gen_expand_wildcards(1, &NameBuff, &fcount,
+ &fnames, EW_FILE|EW_SILENT) == OK
+ && fcount > 0) {
+ int i1;
+ int i2;
+ char_u *f1;
+ char_u *f2;
+ char_u *t1;
+ char_u *e1;
+ char_u *e2;
+
+ /* If foo.abx is found use it instead of foo.txt in
+ * the same directory. */
+ for (i1 = 0; i1 < fcount; ++i1) {
+ for (i2 = 0; i2 < fcount; ++i2) {
+ if (i1 == i2)
+ continue;
+ if (fnames[i1] == NULL || fnames[i2] == NULL)
+ continue;
+ f1 = fnames[i1];
+ f2 = fnames[i2];
+ t1 = path_tail(f1);
+ if (fnamencmp(f1, f2, t1 - f1) != 0)
+ continue;
+ e1 = vim_strrchr(t1, '.');
+ e2 = vim_strrchr(path_tail(f2), '.');
+ if (e1 == NUL || e2 == NUL)
+ continue;
+ if (fnamecmp(e1, ".txt") != 0
+ && fnamecmp(e1, fname + 4) != 0) {
+ /* Not .txt and not .abx, remove it. */
+ free(fnames[i1]);
+ fnames[i1] = NULL;
+ continue;
+ }
+ if (fnamencmp(f1, f2, e1 - f1) != 0)
+ continue;
+ if (fnamecmp(e1, ".txt") == 0
+ && fnamecmp(e2, fname + 4) == 0) {
+ /* use .abx instead of .txt */
+ free(fnames[i1]);
+ fnames[i1] = NULL;
+ }
+ }
+ }
+ for (fi = 0; fi < fcount; ++fi) {
+ if (fnames[fi] == NULL)
+ continue;
+ fd = mch_fopen((char *)fnames[fi], "r");
+ if (fd != NULL) {
+ vim_fgets(IObuff, IOSIZE, fd);
+ if (IObuff[0] == '*'
+ && (s = vim_strchr(IObuff + 1, '*'))
+ != NULL) {
+ int this_utf = MAYBE;
+ /* Change tag definition to a
+ * reference and remove <CR>/<NL>. */
+ IObuff[0] = '|';
+ *s = '|';
+ while (*s != NUL) {
+ if (*s == '\r' || *s == '\n')
+ *s = NUL;
+ /* The text is utf-8 when a byte
+ * above 127 is found and no
+ * illegal byte sequence is found.
+ */
+ if (*s >= 0x80 && this_utf != FALSE) {
+ int l;
+
+ this_utf = TRUE;
+ l = utf_ptr2len(s);
+ if (l == 1)
+ this_utf = FALSE;
+ s += l - 1;
+ }
+ ++s;
+ }
+ /* The help file is latin1 or utf-8;
+ * conversion to the current
+ * 'encoding' may be required. */
+ vc.vc_type = CONV_NONE;
+ convert_setup(&vc, (char_u *)(
+ this_utf == TRUE ? "utf-8"
+ : "latin1"), p_enc);
+ if (vc.vc_type == CONV_NONE)
+ /* No conversion needed. */
+ cp = IObuff;
+ else {
+ /* Do the conversion. If it fails
+ * use the unconverted text. */
+ cp = string_convert(&vc, IObuff,
+ NULL);
+ if (cp == NULL)
+ cp = IObuff;
+ }
+ convert_setup(&vc, NULL, NULL);
+
+ ml_append(lnum, cp, (colnr_T)0, FALSE);
+ if (cp != IObuff)
+ free(cp);
+ ++lnum;
+ }
+ fclose(fd);
+ }
+ }
+ FreeWild(fcount, fnames);
+ }
+ }
+ if (mustfree)
+ free(rt);
+ }
+ break;
+ }
+ }
+}
+
+/*
+ * ":exusage"
+ */
+void ex_exusage(exarg_T *eap)
+{
+ do_cmdline_cmd((char_u *)"help ex-cmd-index");
+}
+
+/*
+ * ":viusage"
+ */
+void ex_viusage(exarg_T *eap)
+{
+ do_cmdline_cmd((char_u *)"help normal-index");
+}
+
+static void helptags_one(char_u *dir, char_u *ext, char_u *lang,
+ int add_help_tags);
+
+/*
+ * ":helptags"
+ */
+void ex_helptags(exarg_T *eap)
+{
+ garray_T ga;
+ int i, j;
+ int len;
+ char_u lang[2];
+ expand_T xpc;
+ char_u *dirname;
+ char_u ext[5];
+ char_u fname[8];
+ int filecount;
+ char_u **files;
+ int add_help_tags = FALSE;
+
+ /* Check for ":helptags ++t {dir}". */
+ if (STRNCMP(eap->arg, "++t", 3) == 0 && vim_iswhite(eap->arg[3])) {
+ add_help_tags = TRUE;
+ eap->arg = skipwhite(eap->arg + 3);
+ }
+
+ ExpandInit(&xpc);
+ xpc.xp_context = EXPAND_DIRECTORIES;
+ dirname = ExpandOne(&xpc, eap->arg, NULL,
+ WILD_LIST_NOTFOUND|WILD_SILENT, WILD_EXPAND_FREE);
+ if (dirname == NULL || !os_isdir(dirname)) {
+ EMSG2(_("E150: Not a directory: %s"), eap->arg);
+ return;
+ }
+
+ /* Get a list of all files in the help directory and in subdirectories. */
+ STRCPY(NameBuff, dirname);
+ add_pathsep(NameBuff);
+ STRCAT(NameBuff, "**");
+ if (gen_expand_wildcards(1, &NameBuff, &filecount, &files,
+ EW_FILE|EW_SILENT) == FAIL
+ || filecount == 0) {
+ EMSG2("E151: No match: %s", NameBuff);
+ free(dirname);
+ return;
+ }
+
+ /* Go over all files in the directory to find out what languages are
+ * present. */
+ ga_init(&ga, 1, 10);
+ for (i = 0; i < filecount; ++i) {
+ len = (int)STRLEN(files[i]);
+ if (len > 4) {
+ if (STRICMP(files[i] + len - 4, ".txt") == 0) {
+ /* ".txt" -> language "en" */
+ lang[0] = 'e';
+ lang[1] = 'n';
+ } else if (files[i][len - 4] == '.'
+ && ASCII_ISALPHA(files[i][len - 3])
+ && ASCII_ISALPHA(files[i][len - 2])
+ && TOLOWER_ASC(files[i][len - 1]) == 'x') {
+ /* ".abx" -> language "ab" */
+ lang[0] = TOLOWER_ASC(files[i][len - 3]);
+ lang[1] = TOLOWER_ASC(files[i][len - 2]);
+ } else
+ continue;
+
+ /* Did we find this language already? */
+ for (j = 0; j < ga.ga_len; j += 2)
+ if (STRNCMP(lang, ((char_u *)ga.ga_data) + j, 2) == 0)
+ break;
+ if (j == ga.ga_len) {
+ /* New language, add it. */
+ ga_grow(&ga, 2);
+ ((char_u *)ga.ga_data)[ga.ga_len++] = lang[0];
+ ((char_u *)ga.ga_data)[ga.ga_len++] = lang[1];
+ }
+ }
+ }
+
+ /*
+ * Loop over the found languages to generate a tags file for each one.
+ */
+ for (j = 0; j < ga.ga_len; j += 2) {
+ STRCPY(fname, "tags-xx");
+ fname[5] = ((char_u *)ga.ga_data)[j];
+ fname[6] = ((char_u *)ga.ga_data)[j + 1];
+ if (fname[5] == 'e' && fname[6] == 'n') {
+ /* English is an exception: use ".txt" and "tags". */
+ fname[4] = NUL;
+ STRCPY(ext, ".txt");
+ } else {
+ /* Language "ab" uses ".abx" and "tags-ab". */
+ STRCPY(ext, ".xxx");
+ ext[1] = fname[5];
+ ext[2] = fname[6];
+ }
+ helptags_one(dirname, ext, fname, add_help_tags);
+ }
+
+ ga_clear(&ga);
+ FreeWild(filecount, files);
+
+ free(dirname);
+}
+
+static void
+helptags_one (
+ char_u *dir, /* doc directory */
+ char_u *ext, /* suffix, ".txt", ".itx", ".frx", etc. */
+ char_u *tagfname, /* "tags" for English, "tags-fr" for French. */
+ int add_help_tags /* add "help-tags" tag */
+)
+{
+ FILE *fd_tags;
+ FILE *fd;
+ garray_T ga;
+ int filecount;
+ char_u **files;
+ char_u *p1, *p2;
+ int fi;
+ char_u *s;
+ int i;
+ char_u *fname;
+ int dirlen;
+ int utf8 = MAYBE;
+ int this_utf8;
+ int firstline;
+ int mix = FALSE; /* detected mixed encodings */
+
+ /*
+ * Find all *.txt files.
+ */
+ dirlen = (int)STRLEN(dir);
+ STRCPY(NameBuff, dir);
+ STRCAT(NameBuff, "/**/*");
+ STRCAT(NameBuff, ext);
+ if (gen_expand_wildcards(1, &NameBuff, &filecount, &files,
+ EW_FILE|EW_SILENT) == FAIL
+ || filecount == 0) {
+ if (!got_int)
+ EMSG2("E151: No match: %s", NameBuff);
+ return;
+ }
+
+ /*
+ * Open the tags file for writing.
+ * Do this before scanning through all the files.
+ */
+ STRCPY(NameBuff, dir);
+ add_pathsep(NameBuff);
+ STRCAT(NameBuff, tagfname);
+ fd_tags = mch_fopen((char *)NameBuff, "w");
+ if (fd_tags == NULL) {
+ EMSG2(_("E152: Cannot open %s for writing"), NameBuff);
+ FreeWild(filecount, files);
+ return;
+ }
+
+ /*
+ * If using the "++t" argument or generating tags for "$VIMRUNTIME/doc"
+ * add the "help-tags" tag.
+ */
+ ga_init(&ga, (int)sizeof(char_u *), 100);
+ if (add_help_tags || path_full_compare((char_u *)"$VIMRUNTIME/doc",
+ dir, FALSE) == kEqualFiles) {
+ ga_grow(&ga, 1);
+ s = xmalloc(18 + STRLEN(tagfname));
+ sprintf((char *)s, "help-tags\t%s\t1\n", tagfname);
+ ((char_u **)ga.ga_data)[ga.ga_len] = s;
+ ++ga.ga_len;
+ }
+
+ /*
+ * Go over all the files and extract the tags.
+ */
+ for (fi = 0; fi < filecount && !got_int; ++fi) {
+ fd = mch_fopen((char *)files[fi], "r");
+ if (fd == NULL) {
+ EMSG2(_("E153: Unable to open %s for reading"), files[fi]);
+ continue;
+ }
+ fname = files[fi] + dirlen + 1;
+
+ firstline = TRUE;
+ while (!vim_fgets(IObuff, IOSIZE, fd) && !got_int) {
+ if (firstline) {
+ /* Detect utf-8 file by a non-ASCII char in the first line. */
+ this_utf8 = MAYBE;
+ for (s = IObuff; *s != NUL; ++s)
+ if (*s >= 0x80) {
+ int l;
+
+ this_utf8 = TRUE;
+ l = utf_ptr2len(s);
+ if (l == 1) {
+ /* Illegal UTF-8 byte sequence. */
+ this_utf8 = FALSE;
+ break;
+ }
+ s += l - 1;
+ }
+ if (this_utf8 == MAYBE) /* only ASCII characters found */
+ this_utf8 = FALSE;
+ if (utf8 == MAYBE) /* first file */
+ utf8 = this_utf8;
+ else if (utf8 != this_utf8) {
+ EMSG2(_(
+ "E670: Mix of help file encodings within a language: %s"),
+ files[fi]);
+ mix = !got_int;
+ got_int = TRUE;
+ }
+ firstline = FALSE;
+ }
+ p1 = vim_strchr(IObuff, '*'); /* find first '*' */
+ while (p1 != NULL) {
+ /* Use vim_strbyte() instead of vim_strchr() so that when
+ * 'encoding' is dbcs it still works, don't find '*' in the
+ * second byte. */
+ p2 = vim_strbyte(p1 + 1, '*'); /* find second '*' */
+ if (p2 != NULL && p2 > p1 + 1) { /* skip "*" and "**" */
+ for (s = p1 + 1; s < p2; ++s)
+ if (*s == ' ' || *s == '\t' || *s == '|')
+ break;
+
+ /*
+ * Only accept a *tag* when it consists of valid
+ * characters, there is white space before it and is
+ * followed by a white character or end-of-line.
+ */
+ if (s == p2
+ && (p1 == IObuff || p1[-1] == ' ' || p1[-1] == '\t')
+ && (vim_strchr((char_u *)" \t\n\r", s[1]) != NULL
+ || s[1] == '\0')) {
+ *p2 = '\0';
+ ++p1;
+ ga_grow(&ga, 1);
+ s = xmalloc((p2 - p1) + STRLEN(fname) + 2);
+ ((char_u **)ga.ga_data)[ga.ga_len] = s;
+ ++ga.ga_len;
+ sprintf((char *)s, "%s\t%s", p1, fname);
+
+ /* find next '*' */
+ p2 = vim_strchr(p2 + 1, '*');
+ }
+ }
+ p1 = p2;
+ }
+ line_breakcheck();
+ }
+
+ fclose(fd);
+ }
+
+ FreeWild(filecount, files);
+
+ if (!got_int) {
+ /*
+ * Sort the tags.
+ */
+ sort_strings((char_u **)ga.ga_data, ga.ga_len);
+
+ /*
+ * Check for duplicates.
+ */
+ for (i = 1; i < ga.ga_len; ++i) {
+ p1 = ((char_u **)ga.ga_data)[i - 1];
+ p2 = ((char_u **)ga.ga_data)[i];
+ while (*p1 == *p2) {
+ if (*p2 == '\t') {
+ *p2 = NUL;
+ vim_snprintf((char *)NameBuff, MAXPATHL,
+ _("E154: Duplicate tag \"%s\" in file %s/%s"),
+ ((char_u **)ga.ga_data)[i], dir, p2 + 1);
+ EMSG(NameBuff);
+ *p2 = '\t';
+ break;
+ }
+ ++p1;
+ ++p2;
+ }
+ }
+
+ if (utf8 == TRUE)
+ fprintf(fd_tags, "!_TAG_FILE_ENCODING\tutf-8\t//\n");
+
+ /*
+ * Write the tags into the file.
+ */
+ for (i = 0; i < ga.ga_len; ++i) {
+ s = ((char_u **)ga.ga_data)[i];
+ if (STRNCMP(s, "help-tags\t", 10) == 0)
+ /* help-tags entry was added in formatted form */
+ fputs((char *)s, fd_tags);
+ else {
+ fprintf(fd_tags, "%s\t/*", s);
+ for (p1 = s; *p1 != '\t'; ++p1) {
+ /* insert backslash before '\\' and '/' */
+ if (*p1 == '\\' || *p1 == '/')
+ putc('\\', fd_tags);
+ putc(*p1, fd_tags);
+ }
+ fprintf(fd_tags, "*\n");
+ }
+ }
+ }
+ if (mix)
+ got_int = FALSE; /* continue with other languages */
+
+ for (i = 0; i < ga.ga_len; ++i)
+ free(((char_u **)ga.ga_data)[i]);
+ ga_clear(&ga);
+ fclose(fd_tags); /* there is no check for an error... */
+}
+
+/*
+ * Struct to hold the sign properties.
+ */
+typedef struct sign sign_T;
+
+struct sign
+{
+ sign_T *sn_next; /* next sign in list */
+ int sn_typenr; /* type number of sign */
+ char_u *sn_name; /* name of sign */
+ char_u *sn_icon; /* name of pixmap */
+ char_u *sn_text; /* text used instead of pixmap */
+ int sn_line_hl; /* highlight ID for line */
+ int sn_text_hl; /* highlight ID for text */
+};
+
+static sign_T *first_sign = NULL;
+static int next_sign_typenr = 1;
+
+static int sign_cmd_idx (char_u *begin_cmd, char_u *end_cmd);
+static void sign_list_defined (sign_T *sp);
+static void sign_undefine (sign_T *sp, sign_T *sp_prev);
+
+static char *cmds[] = {
+ "define",
+#define SIGNCMD_DEFINE 0
+ "undefine",
+#define SIGNCMD_UNDEFINE 1
+ "list",
+#define SIGNCMD_LIST 2
+ "place",
+#define SIGNCMD_PLACE 3
+ "unplace",
+#define SIGNCMD_UNPLACE 4
+ "jump",
+#define SIGNCMD_JUMP 5
+ NULL
+#define SIGNCMD_LAST 6
+};
+
+/*
+ * Find index of a ":sign" subcmd from its name.
+ * "*end_cmd" must be writable.
+ */
+static int sign_cmd_idx(
+ char_u *begin_cmd, /* begin of sign subcmd */
+ char_u *end_cmd /* just after sign subcmd */
+ )
+{
+ int idx;
+ char save = *end_cmd;
+
+ *end_cmd = NUL;
+ for (idx = 0; ; ++idx) {
+ if (cmds[idx] == NULL || STRCMP(begin_cmd, cmds[idx]) == 0) {
+ break;
+ }
+ }
+ *end_cmd = save;
+ return idx;
+}
+
+/*
+ * ":sign" command
+ */
+void ex_sign(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ char_u *p;
+ int idx;
+ sign_T *sp;
+ sign_T *sp_prev;
+ buf_T *buf;
+
+ /* Parse the subcommand. */
+ p = skiptowhite(arg);
+ idx = sign_cmd_idx(arg, p);
+ if (idx == SIGNCMD_LAST)
+ {
+ EMSG2(_("E160: Unknown sign command: %s"), arg);
+ return;
+ }
+ arg = skipwhite(p);
+
+ if (idx <= SIGNCMD_LIST)
+ {
+ /*
+ * Define, undefine or list signs.
+ */
+ if (idx == SIGNCMD_LIST && *arg == NUL)
+ {
+ /* ":sign list": list all defined signs */
+ for (sp = first_sign; sp != NULL && !got_int; sp = sp->sn_next)
+ sign_list_defined(sp);
+ }
+ else if (*arg == NUL)
+ EMSG(_("E156: Missing sign name"));
+ else
+ {
+ /* Isolate the sign name. If it's a number skip leading zeroes,
+ * so that "099" and "99" are the same sign. But keep "0". */
+ p = skiptowhite(arg);
+ if (*p != NUL)
+ *p++ = NUL;
+ while (arg[0] == '0' && arg[1] != NUL)
+ ++arg;
+
+ sp_prev = NULL;
+ for (sp = first_sign; sp != NULL; sp = sp->sn_next)
+ {
+ if (STRCMP(sp->sn_name, arg) == 0)
+ break;
+ sp_prev = sp;
+ }
+ if (idx == SIGNCMD_DEFINE)
+ {
+ /* ":sign define {name} ...": define a sign */
+ if (sp == NULL)
+ {
+ sign_T *lp;
+ int start = next_sign_typenr;
+
+ /* Allocate a new sign. */
+ sp = xcalloc(1, sizeof(sign_T));
+
+ /* Check that next_sign_typenr is not already being used.
+ * This only happens after wrapping around. Hopefully
+ * another one got deleted and we can use its number. */
+ for (lp = first_sign; lp != NULL; )
+ {
+ if (lp->sn_typenr == next_sign_typenr)
+ {
+ ++next_sign_typenr;
+ if (next_sign_typenr == MAX_TYPENR)
+ next_sign_typenr = 1;
+ if (next_sign_typenr == start)
+ {
+ free(sp);
+ EMSG(_("E612: Too many signs defined"));
+ return;
+ }
+ lp = first_sign; /* start all over */
+ continue;
+ }
+ lp = lp->sn_next;
+ }
+
+ sp->sn_typenr = next_sign_typenr;
+ if (++next_sign_typenr == MAX_TYPENR)
+ next_sign_typenr = 1; /* wrap around */
+
+ sp->sn_name = vim_strsave(arg);
+ if (sp->sn_name == NULL) /* out of memory */
+ {
+ free(sp);
+ return;
+ }
+
+ /* add the new sign to the list of signs */
+ if (sp_prev == NULL)
+ first_sign = sp;
+ else
+ sp_prev->sn_next = sp;
+ }
+
+ /* set values for a defined sign. */
+ for (;;)
+ {
+ arg = skipwhite(p);
+ if (*arg == NUL)
+ break;
+ p = skiptowhite_esc(arg);
+ if (STRNCMP(arg, "icon=", 5) == 0)
+ {
+ arg += 5;
+ free(sp->sn_icon);
+ sp->sn_icon = vim_strnsave(arg, (int)(p - arg));
+ backslash_halve(sp->sn_icon);
+ }
+ else if (STRNCMP(arg, "text=", 5) == 0)
+ {
+ char_u *s;
+ int cells;
+ int len;
+
+ arg += 5;
+
+ /* Count cells and check for non-printable chars */
+ if (has_mbyte)
+ {
+ cells = 0;
+ for (s = arg; s < p; s += (*mb_ptr2len)(s))
+ {
+ if (!vim_isprintc((*mb_ptr2char)(s)))
+ break;
+ cells += (*mb_ptr2cells)(s);
+ }
+ }
+ else
+
+ {
+ for (s = arg; s < p; ++s)
+ if (!vim_isprintc(*s))
+ break;
+ cells = (int)(s - arg);
+ }
+ /* Currently must be one or two display cells */
+ if (s != p || cells < 1 || cells > 2)
+ {
+ *p = NUL;
+ EMSG2(_("E239: Invalid sign text: %s"), arg);
+ return;
+ }
+
+ free(sp->sn_text);
+ /* Allocate one byte more if we need to pad up
+ * with a space. */
+ len = (int)(p - arg + ((cells == 1) ? 1 : 0));
+ sp->sn_text = vim_strnsave(arg, len);
+
+ if (sp->sn_text != NULL && cells == 1)
+ STRCPY(sp->sn_text + len - 1, " ");
+ }
+ else if (STRNCMP(arg, "linehl=", 7) == 0)
+ {
+ arg += 7;
+ sp->sn_line_hl = syn_check_group(arg, (int)(p - arg));
+ }
+ else if (STRNCMP(arg, "texthl=", 7) == 0)
+ {
+ arg += 7;
+ sp->sn_text_hl = syn_check_group(arg, (int)(p - arg));
+ }
+ else
+ {
+ EMSG2(_(e_invarg2), arg);
+ return;
+ }
+ }
+ }
+ else if (sp == NULL)
+ EMSG2(_("E155: Unknown sign: %s"), arg);
+ else if (idx == SIGNCMD_LIST)
+ /* ":sign list {name}" */
+ sign_list_defined(sp);
+ else
+ /* ":sign undefine {name}" */
+ sign_undefine(sp, sp_prev);
+ }
+ }
+ else
+ {
+ int id = -1;
+ linenr_T lnum = -1;
+ char_u *sign_name = NULL;
+ char_u *arg1;
+
+ if (*arg == NUL)
+ {
+ if (idx == SIGNCMD_PLACE)
+ {
+ /* ":sign place": list placed signs in all buffers */
+ sign_list_placed(NULL);
+ }
+ else if (idx == SIGNCMD_UNPLACE)
+ {
+ /* ":sign unplace": remove placed sign at cursor */
+ id = buf_findsign_id(curwin->w_buffer, curwin->w_cursor.lnum);
+ if (id > 0)
+ {
+ buf_delsign(curwin->w_buffer, id);
+ update_debug_sign(curwin->w_buffer, curwin->w_cursor.lnum);
+ }
+ else
+ EMSG(_("E159: Missing sign number"));
+ }
+ else
+ EMSG(_(e_argreq));
+ return;
+ }
+
+ if (idx == SIGNCMD_UNPLACE && arg[0] == '*' && arg[1] == NUL)
+ {
+ /* ":sign unplace *": remove all placed signs */
+ buf_delete_all_signs();
+ return;
+ }
+
+ /* first arg could be placed sign id */
+ arg1 = arg;
+ if (VIM_ISDIGIT(*arg))
+ {
+ id = getdigits(&arg);
+ if (!vim_iswhite(*arg) && *arg != NUL)
+ {
+ id = -1;
+ arg = arg1;
+ }
+ else
+ {
+ arg = skipwhite(arg);
+ if (idx == SIGNCMD_UNPLACE && *arg == NUL)
+ {
+ /* ":sign unplace {id}": remove placed sign by number */
+ for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ if ((lnum = buf_delsign(buf, id)) != 0)
+ update_debug_sign(buf, lnum);
+ return;
+ }
+ }
+ }
+
+ /*
+ * Check for line={lnum} name={name} and file={fname} or buffer={nr}.
+ * Leave "arg" pointing to {fname}.
+ */
+ for (;;)
+ {
+ if (STRNCMP(arg, "line=", 5) == 0)
+ {
+ arg += 5;
+ lnum = atoi((char *)arg);
+ arg = skiptowhite(arg);
+ }
+ else if (STRNCMP(arg, "*", 1) == 0 && idx == SIGNCMD_UNPLACE)
+ {
+ if (id != -1)
+ {
+ EMSG(_(e_invarg));
+ return;
+ }
+ id = -2;
+ arg = skiptowhite(arg + 1);
+ }
+ else if (STRNCMP(arg, "name=", 5) == 0)
+ {
+ arg += 5;
+ sign_name = arg;
+ arg = skiptowhite(arg);
+ if (*arg != NUL)
+ *arg++ = NUL;
+ while (sign_name[0] == '0' && sign_name[1] != NUL)
+ ++sign_name;
+ }
+ else if (STRNCMP(arg, "file=", 5) == 0)
+ {
+ arg += 5;
+ buf = buflist_findname(arg);
+ break;
+ }
+ else if (STRNCMP(arg, "buffer=", 7) == 0)
+ {
+ arg += 7;
+ buf = buflist_findnr((int)getdigits(&arg));
+ if (*skipwhite(arg) != NUL)
+ EMSG(_(e_trailing));
+ break;
+ }
+ else
+ {
+ EMSG(_(e_invarg));
+ return;
+ }
+ arg = skipwhite(arg);
+ }
+
+ if (buf == NULL)
+ {
+ EMSG2(_("E158: Invalid buffer name: %s"), arg);
+ }
+ else if (id <= 0 && !(idx == SIGNCMD_UNPLACE && id == -2))
+ {
+ if (lnum >= 0 || sign_name != NULL)
+ EMSG(_(e_invarg));
+ else
+ /* ":sign place file={fname}": list placed signs in one file */
+ sign_list_placed(buf);
+ }
+ else if (idx == SIGNCMD_JUMP)
+ {
+ /* ":sign jump {id} file={fname}" */
+ if (lnum >= 0 || sign_name != NULL)
+ EMSG(_(e_invarg));
+ else if ((lnum = buf_findsign(buf, id)) > 0)
+ { /* goto a sign ... */
+ if (buf_jump_open_win(buf) != NULL)
+ { /* ... in a current window */
+ curwin->w_cursor.lnum = lnum;
+ check_cursor_lnum();
+ beginline(BL_WHITE);
+ }
+ else
+ { /* ... not currently in a window */
+ char_u *cmd;
+
+ cmd = xmalloc(STRLEN(buf->b_fname) + 25);
+ sprintf((char *)cmd, "e +%" PRId64 " %s",
+ (int64_t)lnum, buf->b_fname);
+ do_cmdline_cmd(cmd);
+ free(cmd);
+ }
+
+ foldOpenCursor();
+ }
+ else
+ EMSGN(_("E157: Invalid sign ID: %" PRId64), id);
+ }
+ else if (idx == SIGNCMD_UNPLACE)
+ {
+ if (lnum >= 0 || sign_name != NULL)
+ EMSG(_(e_invarg));
+ else if (id == -2)
+ {
+ /* ":sign unplace * file={fname}" */
+ redraw_buf_later(buf, NOT_VALID);
+ buf_delete_signs(buf);
+ }
+ else
+ {
+ /* ":sign unplace {id} file={fname}" */
+ lnum = buf_delsign(buf, id);
+ update_debug_sign(buf, lnum);
+ }
+ }
+ /* idx == SIGNCMD_PLACE */
+ else if (sign_name != NULL)
+ {
+ for (sp = first_sign; sp != NULL; sp = sp->sn_next)
+ if (STRCMP(sp->sn_name, sign_name) == 0)
+ break;
+ if (sp == NULL)
+ {
+ EMSG2(_("E155: Unknown sign: %s"), sign_name);
+ return;
+ }
+ if (lnum > 0)
+ /* ":sign place {id} line={lnum} name={name} file={fname}":
+ * place a sign */
+ buf_addsign(buf, id, lnum, sp->sn_typenr);
+ else
+ /* ":sign place {id} file={fname}": change sign type */
+ lnum = buf_change_sign_type(buf, id, sp->sn_typenr);
+ update_debug_sign(buf, lnum);
+ }
+ else
+ EMSG(_(e_invarg));
+ }
+}
+
+/*
+ * List one sign.
+ */
+ static void
+sign_list_defined(sp)
+ sign_T *sp;
+{
+ char_u *p;
+
+ smsg((char_u *)"sign %s", sp->sn_name);
+ if (sp->sn_icon != NULL)
+ {
+ MSG_PUTS(" icon=");
+ msg_outtrans(sp->sn_icon);
+ MSG_PUTS(_(" (not supported)"));
+ }
+ if (sp->sn_text != NULL)
+ {
+ MSG_PUTS(" text=");
+ msg_outtrans(sp->sn_text);
+ }
+ if (sp->sn_line_hl > 0)
+ {
+ MSG_PUTS(" linehl=");
+ p = get_highlight_name(NULL, sp->sn_line_hl - 1);
+ if (p == NULL)
+ MSG_PUTS("NONE");
+ else
+ msg_puts(p);
+ }
+ if (sp->sn_text_hl > 0)
+ {
+ MSG_PUTS(" texthl=");
+ p = get_highlight_name(NULL, sp->sn_text_hl - 1);
+ if (p == NULL)
+ MSG_PUTS("NONE");
+ else
+ msg_puts(p);
+ }
+}
+
+/*
+ * Undefine a sign and free its memory.
+ */
+ static void
+sign_undefine(sp, sp_prev)
+ sign_T *sp;
+ sign_T *sp_prev;
+{
+ free(sp->sn_name);
+ free(sp->sn_icon);
+ free(sp->sn_text);
+ if (sp_prev == NULL)
+ first_sign = sp->sn_next;
+ else
+ sp_prev->sn_next = sp->sn_next;
+ free(sp);
+}
+
+/*
+ * Get highlighting attribute for sign "typenr".
+ * If "line" is TRUE: line highl, if FALSE: text highl.
+ */
+ int
+sign_get_attr(typenr, line)
+ int typenr;
+ int line;
+{
+ sign_T *sp;
+
+ for (sp = first_sign; sp != NULL; sp = sp->sn_next)
+ if (sp->sn_typenr == typenr)
+ {
+ if (line)
+ {
+ if (sp->sn_line_hl > 0)
+ return syn_id2attr(sp->sn_line_hl);
+ }
+ else
+ {
+ if (sp->sn_text_hl > 0)
+ return syn_id2attr(sp->sn_text_hl);
+ }
+ break;
+ }
+ return 0;
+}
+
+/*
+ * Get text mark for sign "typenr".
+ * Returns NULL if there isn't one.
+ */
+ char_u *
+sign_get_text(typenr)
+ int typenr;
+{
+ sign_T *sp;
+
+ for (sp = first_sign; sp != NULL; sp = sp->sn_next)
+ if (sp->sn_typenr == typenr)
+ return sp->sn_text;
+ return NULL;
+}
+
+
+/*
+ * Get the name of a sign by its typenr.
+ */
+ char_u *
+sign_typenr2name(typenr)
+ int typenr;
+{
+ sign_T *sp;
+
+ for (sp = first_sign; sp != NULL; sp = sp->sn_next)
+ if (sp->sn_typenr == typenr)
+ return sp->sn_name;
+ return (char_u *)_("[Deleted]");
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+/*
+ * Undefine/free all signs.
+ */
+ void
+free_signs()
+{
+ while (first_sign != NULL)
+ sign_undefine(first_sign, NULL);
+}
+#endif
+
+static enum
+{
+ EXP_SUBCMD, /* expand :sign sub-commands */
+ EXP_DEFINE, /* expand :sign define {name} args */
+ EXP_PLACE, /* expand :sign place {id} args */
+ EXP_UNPLACE, /* expand :sign unplace" */
+ EXP_SIGN_NAMES /* expand with name of placed signs */
+} expand_what;
+
+/*
+ * Function given to ExpandGeneric() to obtain the sign command
+ * expansion.
+ */
+char_u * get_sign_name(expand_T *xp, int idx)
+{
+ sign_T *sp;
+ int current_idx;
+
+ switch (expand_what)
+ {
+ case EXP_SUBCMD:
+ return (char_u *)cmds[idx];
+ case EXP_DEFINE:
+ {
+ char *define_arg[] =
+ {
+ "icon=", "linehl=", "text=", "texthl=", NULL
+ };
+ return (char_u *)define_arg[idx];
+ }
+ case EXP_PLACE:
+ {
+ char *place_arg[] =
+ {
+ "line=", "name=", "file=", "buffer=", NULL
+ };
+ return (char_u *)place_arg[idx];
+ }
+ case EXP_UNPLACE:
+ {
+ char *unplace_arg[] = { "file=", "buffer=", NULL };
+ return (char_u *)unplace_arg[idx];
+ }
+ case EXP_SIGN_NAMES:
+ /* Complete with name of signs already defined */
+ current_idx = 0;
+ for (sp = first_sign; sp != NULL; sp = sp->sn_next)
+ if (current_idx++ == idx)
+ return sp->sn_name;
+ return NULL;
+ default:
+ return NULL;
+ }
+}
+
+/*
+ * Handle command line completion for :sign command.
+ */
+ void
+set_context_in_sign_cmd(xp, arg)
+ expand_T *xp;
+ char_u *arg;
+{
+ char_u *p;
+ char_u *end_subcmd;
+ char_u *last;
+ int cmd_idx;
+ char_u *begin_subcmd_args;
+
+ /* Default: expand subcommands. */
+ xp->xp_context = EXPAND_SIGN;
+ expand_what = EXP_SUBCMD;
+ xp->xp_pattern = arg;
+
+ end_subcmd = skiptowhite(arg);
+ if (*end_subcmd == NUL)
+ /* expand subcmd name
+ * :sign {subcmd}<CTRL-D>*/
+ return;
+
+ cmd_idx = sign_cmd_idx(arg, end_subcmd);
+
+ /* :sign {subcmd} {subcmd_args}
+ * |
+ * begin_subcmd_args */
+ begin_subcmd_args = skipwhite(end_subcmd);
+ p = skiptowhite(begin_subcmd_args);
+ if (*p == NUL)
+ {
+ /*
+ * Expand first argument of subcmd when possible.
+ * For ":jump {id}" and ":unplace {id}", we could
+ * possibly expand the ids of all signs already placed.
+ */
+ xp->xp_pattern = begin_subcmd_args;
+ switch (cmd_idx)
+ {
+ case SIGNCMD_LIST:
+ case SIGNCMD_UNDEFINE:
+ /* :sign list <CTRL-D>
+ * :sign undefine <CTRL-D> */
+ expand_what = EXP_SIGN_NAMES;
+ break;
+ default:
+ xp->xp_context = EXPAND_NOTHING;
+ }
+ return;
+ }
+
+ /* expand last argument of subcmd */
+
+ /* :sign define {name} {args}...
+ * |
+ * p */
+
+ /* Loop until reaching last argument. */
+ do
+ {
+ p = skipwhite(p);
+ last = p;
+ p = skiptowhite(p);
+ } while (*p != NUL);
+
+ p = vim_strchr(last, '=');
+
+ /* :sign define {name} {args}... {last}=
+ * | |
+ * last p */
+ if (p == NUL)
+ {
+ /* Expand last argument name (before equal sign). */
+ xp->xp_pattern = last;
+ switch (cmd_idx)
+ {
+ case SIGNCMD_DEFINE:
+ expand_what = EXP_DEFINE;
+ break;
+ case SIGNCMD_PLACE:
+ expand_what = EXP_PLACE;
+ break;
+ case SIGNCMD_JUMP:
+ case SIGNCMD_UNPLACE:
+ expand_what = EXP_UNPLACE;
+ break;
+ default:
+ xp->xp_context = EXPAND_NOTHING;
+ }
+ }
+ else
+ {
+ /* Expand last argument value (after equal sign). */
+ xp->xp_pattern = p + 1;
+ switch (cmd_idx)
+ {
+ case SIGNCMD_DEFINE:
+ if (STRNCMP(last, "texthl", p - last) == 0 ||
+ STRNCMP(last, "linehl", p - last) == 0)
+ xp->xp_context = EXPAND_HIGHLIGHT;
+ else if (STRNCMP(last, "icon", p - last) == 0)
+ xp->xp_context = EXPAND_FILES;
+ else
+ xp->xp_context = EXPAND_NOTHING;
+ break;
+ case SIGNCMD_PLACE:
+ if (STRNCMP(last, "name", p - last) == 0)
+ expand_what = EXP_SIGN_NAMES;
+ else
+ xp->xp_context = EXPAND_NOTHING;
+ break;
+ default:
+ xp->xp_context = EXPAND_NOTHING;
+ }
+ }
+}
+
generated by cgit (git 2.34.1) at 2025-04-28 22:45:33 +0000