Introduce nvim namespace: Move files.

Move files from src/ to src/nvim/.
- src/nvim/ becomes the new root dir for nvim executable sources.
- src/libnvim/ is planned to become root dir of the neovim library.

1 files changed, 0 insertions, 4657 deletions

diff --git a/src/buffer.c b/src/buffer.c
deleted file mode 100644
index 7cd773b55c..0000000000
--- a/src/buffer.c
+++ /dev/null
@@ -1,4657 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * buffer.c: functions for dealing with the buffer structure
- */
-
-/*
- * The buffer list is a double linked list of all buffers.
- * Each buffer can be in one of these states:
- * never loaded: BF_NEVERLOADED is set, only the file name is valid
- *   not loaded: b_ml.ml_mfp == NULL, no memfile allocated
- *	 hidden: b_nwindows == 0, loaded but not displayed in a window
- *	 normal: loaded and displayed in a window
- *
- * Instead of storing file names all over the place, each file name is
- * stored in the buffer list. It can be referenced by a number.
- *
- * The current implementation remembers all file names ever used.
- */
-
-#include <string.h>
-
-#include "vim.h"
-#include "buffer.h"
-#include "charset.h"
-#include "diff.h"
-#include "digraph.h"
-#include "eval.h"
-#include "ex_cmds2.h"
-#include "ex_cmds.h"
-#include "ex_docmd.h"
-#include "ex_eval.h"
-#include "ex_getln.h"
-#include "fileio.h"
-#include "fold.h"
-#include "getchar.h"
-#include "hashtab.h"
-#include "indent.h"
-#include "indent_c.h"
-#include "main.h"
-#include "mark.h"
-#include "mbyte.h"
-#include "memline.h"
-#include "memory.h"
-#include "message.h"
-#include "misc1.h"
-#include "misc2.h"
-#include "garray.h"
-#include "move.h"
-#include "option.h"
-#include "os_unix.h"
-#include "path.h"
-#include "quickfix.h"
-#include "regexp.h"
-#include "screen.h"
-#include "spell.h"
-#include "syntax.h"
-#include "term.h"
-#include "ui.h"
-#include "undo.h"
-#include "window.h"
-#include "os/os.h"
-
-// Todo(stefan991): remove this macro
-#define INVALID_DEVICE_ID UINT64_MAX
-
-static char_u   *buflist_match(regprog_T *prog, buf_T *buf);
-# define HAVE_BUFLIST_MATCH
-static char_u   *fname_match(regprog_T *prog, char_u *name);
-static void buflist_setfpos(buf_T *buf, win_T *win, linenr_T lnum,
-                            colnr_T col, int copy_options);
-static wininfo_T *find_wininfo(buf_T *buf, int skip_diff_buffer);
-static buf_T *buflist_findname_file_info(char_u *ffname, FileInfo *file_info);
-static int otherfile_buf(buf_T *buf, char_u *ffname, FileInfo *file_info);
-static int buf_same_ino(buf_T *buf, FileInfo *file_info);
-static int ti_change(char_u *str, char_u **last);
-static int append_arg_number(win_T *wp, char_u *buf, int buflen, int add_file);
-static void free_buffer(buf_T *);
-static void free_buffer_stuff(buf_T *buf, int free_options);
-static void clear_wininfo(buf_T *buf);
-
-static void insert_sign(buf_T *buf, signlist_T *prev, signlist_T *next, int id, linenr_T lnum, int typenr);
-
-static char *msg_loclist = N_("[Location List]");
-static char *msg_qflist = N_("[Quickfix List]");
-static char *e_auabort = N_("E855: Autocommands caused command to abort");
-
-/*
- * Open current buffer, that is: open the memfile and read the file into
- * memory.
- * Return FAIL for failure, OK otherwise.
- */
-int 
-open_buffer (
-    int read_stdin,                     /* read file from stdin */
-    exarg_T *eap,                   /* for forced 'ff' and 'fenc' or NULL */
-    int flags                          /* extra flags for readfile() */
-)
-{
-  int retval = OK;
-  buf_T       *old_curbuf;
-  long old_tw = curbuf->b_p_tw;
-
-  /*
-   * The 'readonly' flag is only set when BF_NEVERLOADED is being reset.
-   * When re-entering the same buffer, it should not change, because the
-   * user may have reset the flag by hand.
-   */
-  if (readonlymode && curbuf->b_ffname != NULL
-      && (curbuf->b_flags & BF_NEVERLOADED))
-    curbuf->b_p_ro = TRUE;
-
-  if (ml_open(curbuf) == FAIL) {
-    /*
-     * There MUST be a memfile, otherwise we can't do anything
-     * If we can't create one for the current buffer, take another buffer
-     */
-    close_buffer(NULL, curbuf, 0, FALSE);
-    for (curbuf = firstbuf; curbuf != NULL; curbuf = curbuf->b_next)
-      if (curbuf->b_ml.ml_mfp != NULL)
-        break;
-    /*
-     * if there is no memfile at all, exit
-     * This is OK, since there are no changes to lose.
-     */
-    if (curbuf == NULL) {
-      EMSG(_("E82: Cannot allocate any buffer, exiting..."));
-      getout(2);
-    }
-    EMSG(_("E83: Cannot allocate buffer, using other one..."));
-    enter_buffer(curbuf);
-    if (old_tw != curbuf->b_p_tw)
-      check_colorcolumn(curwin);
-    return FAIL;
-  }
-
-  /* The autocommands in readfile() may change the buffer, but only AFTER
-   * reading the file. */
-  old_curbuf = curbuf;
-  modified_was_set = FALSE;
-
-  /* mark cursor position as being invalid */
-  curwin->w_valid = 0;
-
-  if (curbuf->b_ffname != NULL
-      ) {
-    retval = readfile(curbuf->b_ffname, curbuf->b_fname,
-        (linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM, eap,
-        flags | READ_NEW);
-    /* Help buffer is filtered. */
-    if (curbuf->b_help)
-      fix_help_buffer();
-  } else if (read_stdin) {
-    int save_bin = curbuf->b_p_bin;
-    linenr_T line_count;
-
-    /*
-     * First read the text in binary mode into the buffer.
-     * Then read from that same buffer and append at the end.  This makes
-     * it possible to retry when 'fileformat' or 'fileencoding' was
-     * guessed wrong.
-     */
-    curbuf->b_p_bin = TRUE;
-    retval = readfile(NULL, NULL, (linenr_T)0,
-        (linenr_T)0, (linenr_T)MAXLNUM, NULL,
-        flags | (READ_NEW + READ_STDIN));
-    curbuf->b_p_bin = save_bin;
-    if (retval == OK) {
-      line_count = curbuf->b_ml.ml_line_count;
-      retval = readfile(NULL, NULL, (linenr_T)line_count,
-          (linenr_T)0, (linenr_T)MAXLNUM, eap,
-          flags | READ_BUFFER);
-      if (retval == OK) {
-        /* Delete the binary lines. */
-        while (--line_count >= 0)
-          ml_delete((linenr_T)1, FALSE);
-      } else {
-        /* Delete the converted lines. */
-        while (curbuf->b_ml.ml_line_count > line_count)
-          ml_delete(line_count, FALSE);
-      }
-      /* Put the cursor on the first line. */
-      curwin->w_cursor.lnum = 1;
-      curwin->w_cursor.col = 0;
-
-      /* Set or reset 'modified' before executing autocommands, so that
-       * it can be changed there. */
-      if (!readonlymode && !bufempty())
-        changed();
-      else if (retval != FAIL)
-        unchanged(curbuf, FALSE);
-      apply_autocmds_retval(EVENT_STDINREADPOST, NULL, NULL, FALSE,
-          curbuf, &retval);
-    }
-  }
-
-  /* if first time loading this buffer, init b_chartab[] */
-  if (curbuf->b_flags & BF_NEVERLOADED) {
-    (void)buf_init_chartab(curbuf, FALSE);
-    parse_cino(curbuf);
-  }
-
-  /*
-   * Set/reset the Changed flag first, autocmds may change the buffer.
-   * Apply the automatic commands, before processing the modelines.
-   * So the modelines have priority over auto commands.
-   */
-  /* When reading stdin, the buffer contents always needs writing, so set
-   * the changed flag.  Unless in readonly mode: "ls | gview -".
-   * When interrupted and 'cpoptions' contains 'i' set changed flag. */
-  if ((got_int && vim_strchr(p_cpo, CPO_INTMOD) != NULL)
-      || modified_was_set               /* ":set modified" used in autocmd */
-      || (aborting() && vim_strchr(p_cpo, CPO_INTMOD) != NULL)
-      )
-    changed();
-  else if (retval != FAIL && !read_stdin)
-    unchanged(curbuf, FALSE);
-  save_file_ff(curbuf);                 /* keep this fileformat */
-
-  /* require "!" to overwrite the file, because it wasn't read completely */
-  if (aborting())
-    curbuf->b_flags |= BF_READERR;
-
-  /* Need to update automatic folding.  Do this before the autocommands,
-   * they may use the fold info. */
-  foldUpdateAll(curwin);
-
-  /* need to set w_topline, unless some autocommand already did that. */
-  if (!(curwin->w_valid & VALID_TOPLINE)) {
-    curwin->w_topline = 1;
-    curwin->w_topfill = 0;
-  }
-  apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf, &retval);
-
-  if (retval != FAIL) {
-    /*
-     * The autocommands may have changed the current buffer.  Apply the
-     * modelines to the correct buffer, if it still exists and is loaded.
-     */
-    if (buf_valid(old_curbuf) && old_curbuf->b_ml.ml_mfp != NULL) {
-      aco_save_T aco;
-
-      /* Go to the buffer that was opened. */
-      aucmd_prepbuf(&aco, old_curbuf);
-      do_modelines(0);
-      curbuf->b_flags &= ~(BF_CHECK_RO | BF_NEVERLOADED);
-
-      apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf,
-          &retval);
-
-      /* restore curwin/curbuf and a few other things */
-      aucmd_restbuf(&aco);
-    }
-  }
-
-  return retval;
-}
-
-/*
- * Return TRUE if "buf" points to a valid buffer (in the buffer list).
- */
-int buf_valid(buf_T *buf)
-{
-  buf_T       *bp;
-
-  for (bp = firstbuf; bp != NULL; bp = bp->b_next)
-    if (bp == buf)
-      return TRUE;
-  return FALSE;
-}
-
-/*
- * Close the link to a buffer.
- * "action" is used when there is no longer a window for the buffer.
- * It can be:
- * 0			buffer becomes hidden
- * DOBUF_UNLOAD		buffer is unloaded
- * DOBUF_DELETE		buffer is unloaded and removed from buffer list
- * DOBUF_WIPE		buffer is unloaded and really deleted
- * When doing all but the first one on the current buffer, the caller should
- * get a new buffer very soon!
- *
- * The 'bufhidden' option can force freeing and deleting.
- *
- * When "abort_if_last" is TRUE then do not close the buffer if autocommands
- * cause there to be only one window with this buffer.  e.g. when ":quit" is
- * supposed to close the window but autocommands close all other windows.
- */
-void 
-close_buffer (
-    win_T *win,               /* if not NULL, set b_last_cursor */
-    buf_T *buf,
-    int action,
-    int abort_if_last
-)
-{
-  int is_curbuf;
-  int nwindows;
-  int unload_buf = (action != 0);
-  int del_buf = (action == DOBUF_DEL || action == DOBUF_WIPE);
-  int wipe_buf = (action == DOBUF_WIPE);
-
-  /*
-   * Force unloading or deleting when 'bufhidden' says so.
-   * The caller must take care of NOT deleting/freeing when 'bufhidden' is
-   * "hide" (otherwise we could never free or delete a buffer).
-   */
-  if (buf->b_p_bh[0] == 'd') {          /* 'bufhidden' == "delete" */
-    del_buf = TRUE;
-    unload_buf = TRUE;
-  } else if (buf->b_p_bh[0] == 'w') { /* 'bufhidden' == "wipe" */
-    del_buf = TRUE;
-    unload_buf = TRUE;
-    wipe_buf = TRUE;
-  } else if (buf->b_p_bh[0] == 'u')     /* 'bufhidden' == "unload" */
-    unload_buf = TRUE;
-
-  if (win != NULL) {
-    /* Set b_last_cursor when closing the last window for the buffer.
-     * Remember the last cursor position and window options of the buffer.
-     * This used to be only for the current window, but then options like
-     * 'foldmethod' may be lost with a ":only" command. */
-    if (buf->b_nwindows == 1)
-      set_last_cursor(win);
-    buflist_setfpos(buf, win,
-        win->w_cursor.lnum == 1 ? 0 : win->w_cursor.lnum,
-        win->w_cursor.col, TRUE);
-  }
-
-  /* When the buffer is no longer in a window, trigger BufWinLeave */
-  if (buf->b_nwindows == 1) {
-    buf->b_closing = TRUE;
-    apply_autocmds(EVENT_BUFWINLEAVE, buf->b_fname, buf->b_fname,
-        FALSE, buf);
-    if (!buf_valid(buf)) {
-      /* Autocommands deleted the buffer. */
-aucmd_abort:
-      EMSG(_(e_auabort));
-      return;
-    }
-    buf->b_closing = FALSE;
-    if (abort_if_last && one_window())
-      /* Autocommands made this the only window. */
-      goto aucmd_abort;
-
-    /* When the buffer becomes hidden, but is not unloaded, trigger
-     * BufHidden */
-    if (!unload_buf) {
-      buf->b_closing = TRUE;
-      apply_autocmds(EVENT_BUFHIDDEN, buf->b_fname, buf->b_fname,
-          FALSE, buf);
-      if (!buf_valid(buf))
-        /* Autocommands deleted the buffer. */
-        goto aucmd_abort;
-      buf->b_closing = FALSE;
-      if (abort_if_last && one_window())
-        /* Autocommands made this the only window. */
-        goto aucmd_abort;
-    }
-    if (aborting())         /* autocmds may abort script processing */
-      return;
-  }
-  nwindows = buf->b_nwindows;
-
-  /* decrease the link count from windows (unless not in any window) */
-  if (buf->b_nwindows > 0)
-    --buf->b_nwindows;
-
-  /* Return when a window is displaying the buffer or when it's not
-   * unloaded. */
-  if (buf->b_nwindows > 0 || !unload_buf)
-    return;
-
-  /* Always remove the buffer when there is no file name. */
-  if (buf->b_ffname == NULL)
-    del_buf = TRUE;
-
-  /*
-   * Free all things allocated for this buffer.
-   * Also calls the "BufDelete" autocommands when del_buf is TRUE.
-   */
-  /* Remember if we are closing the current buffer.  Restore the number of
-   * windows, so that autocommands in buf_freeall() don't get confused. */
-  is_curbuf = (buf == curbuf);
-  buf->b_nwindows = nwindows;
-
-  buf_freeall(buf, (del_buf ? BFA_DEL : 0) + (wipe_buf ? BFA_WIPE : 0));
-  if (
-    win_valid(win) &&
-    win->w_buffer == buf)
-    win->w_buffer = NULL;      /* make sure we don't use the buffer now */
-
-  /* Autocommands may have deleted the buffer. */
-  if (!buf_valid(buf))
-    return;
-  if (aborting())           /* autocmds may abort script processing */
-    return;
-
-  /* Autocommands may have opened or closed windows for this buffer.
-   * Decrement the count for the close we do here. */
-  if (buf->b_nwindows > 0)
-    --buf->b_nwindows;
-
-  /*
-   * It's possible that autocommands change curbuf to the one being deleted.
-   * This might cause the previous curbuf to be deleted unexpectedly.  But
-   * in some cases it's OK to delete the curbuf, because a new one is
-   * obtained anyway.  Therefore only return if curbuf changed to the
-   * deleted buffer.
-   */
-  if (buf == curbuf && !is_curbuf)
-    return;
-
-  /* Change directories when the 'acd' option is set. */
-  do_autochdir();
-
-  /*
-   * Remove the buffer from the list.
-   */
-  if (wipe_buf) {
-    free(buf->b_ffname);
-    free(buf->b_sfname);
-    if (buf->b_prev == NULL)
-      firstbuf = buf->b_next;
-    else
-      buf->b_prev->b_next = buf->b_next;
-    if (buf->b_next == NULL)
-      lastbuf = buf->b_prev;
-    else
-      buf->b_next->b_prev = buf->b_prev;
-    free_buffer(buf);
-  } else {
-    if (del_buf) {
-      /* Free all internal variables and reset option values, to make
-       * ":bdel" compatible with Vim 5.7. */
-      free_buffer_stuff(buf, TRUE);
-
-      /* Make it look like a new buffer. */
-      buf->b_flags = BF_CHECK_RO | BF_NEVERLOADED;
-
-      /* Init the options when loaded again. */
-      buf->b_p_initialized = FALSE;
-    }
-    buf_clear_file(buf);
-    if (del_buf)
-      buf->b_p_bl = FALSE;
-  }
-}
-
-/*
- * Make buffer not contain a file.
- */
-void buf_clear_file(buf_T *buf)
-{
-  buf->b_ml.ml_line_count = 1;
-  unchanged(buf, TRUE);
-  buf->b_p_eol = TRUE;
-  buf->b_start_eol = TRUE;
-  buf->b_p_bomb = FALSE;
-  buf->b_start_bomb = FALSE;
-  buf->b_ml.ml_mfp = NULL;
-  buf->b_ml.ml_flags = ML_EMPTY;                /* empty buffer */
-}
-
-/*
- * buf_freeall() - free all things allocated for a buffer that are related to
- * the file.  flags:
- * BFA_DEL	  buffer is going to be deleted
- * BFA_WIPE	  buffer is going to be wiped out
- * BFA_KEEP_UNDO  do not free undo information
- */
-void buf_freeall(buf_T *buf, int flags)
-{
-  int is_curbuf = (buf == curbuf);
-
-  buf->b_closing = TRUE;
-  apply_autocmds(EVENT_BUFUNLOAD, buf->b_fname, buf->b_fname, FALSE, buf);
-  if (!buf_valid(buf))              /* autocommands may delete the buffer */
-    return;
-  if ((flags & BFA_DEL) && buf->b_p_bl) {
-    apply_autocmds(EVENT_BUFDELETE, buf->b_fname, buf->b_fname, FALSE, buf);
-    if (!buf_valid(buf))            /* autocommands may delete the buffer */
-      return;
-  }
-  if (flags & BFA_WIPE) {
-    apply_autocmds(EVENT_BUFWIPEOUT, buf->b_fname, buf->b_fname,
-        FALSE, buf);
-    if (!buf_valid(buf))            /* autocommands may delete the buffer */
-      return;
-  }
-  buf->b_closing = FALSE;
-  if (aborting())           /* autocmds may abort script processing */
-    return;
-
-  /*
-   * It's possible that autocommands change curbuf to the one being deleted.
-   * This might cause curbuf to be deleted unexpectedly.  But in some cases
-   * it's OK to delete the curbuf, because a new one is obtained anyway.
-   * Therefore only return if curbuf changed to the deleted buffer.
-   */
-  if (buf == curbuf && !is_curbuf)
-    return;
-  diff_buf_delete(buf);             /* Can't use 'diff' for unloaded buffer. */
-  /* Remove any ownsyntax, unless exiting. */
-  if (firstwin != NULL && curwin->w_buffer == buf)
-    reset_synblock(curwin);
-
-  /* No folds in an empty buffer. */
-  {
-    win_T           *win;
-    tabpage_T       *tp;
-
-    FOR_ALL_TAB_WINDOWS(tp, win)
-    if (win->w_buffer == buf)
-      clearFolding(win);
-  }
-
-  ml_close(buf, TRUE);              /* close and delete the memline/memfile */
-  buf->b_ml.ml_line_count = 0;      /* no lines in buffer */
-  if ((flags & BFA_KEEP_UNDO) == 0) {
-    u_blockfree(buf);               /* free the memory allocated for undo */
-    u_clearall(buf);                /* reset all undo information */
-  }
-  syntax_clear(&buf->b_s);          /* reset syntax info */
-  buf->b_flags &= ~BF_READERR;      /* a read error is no longer relevant */
-}
-
-/*
- * Free a buffer structure and the things it contains related to the buffer
- * itself (not the file, that must have been done already).
- */
-static void free_buffer(buf_T *buf)
-{
-  free_buffer_stuff(buf, TRUE);
-  unref_var_dict(buf->b_vars);
-  aubuflocal_remove(buf);
-  if (autocmd_busy) {
-    // Do not free the buffer structure while autocommands are executing,
-    // it's still needed. Free it when autocmd_busy is reset.
-    buf->b_next = au_pending_free_buf;
-    au_pending_free_buf = buf;
-  } else {
-    free(buf);
-  }
-}
-
-/*
- * Free stuff in the buffer for ":bdel" and when wiping out the buffer.
- */
-static void 
-free_buffer_stuff (
-    buf_T *buf,
-    int free_options                       /* free options as well */
-)
-{
-  if (free_options) {
-    clear_wininfo(buf);                 /* including window-local options */
-    free_buf_options(buf, TRUE);
-    ga_clear(&buf->b_s.b_langp);
-  }
-  vars_clear(&buf->b_vars->dv_hashtab);   /* free all internal variables */
-  hash_init(&buf->b_vars->dv_hashtab);
-  uc_clear(&buf->b_ucmds);              /* clear local user commands */
-  buf_delete_signs(buf);                /* delete any signs */
-  map_clear_int(buf, MAP_ALL_MODES, TRUE, FALSE);    /* clear local mappings */
-  map_clear_int(buf, MAP_ALL_MODES, TRUE, TRUE);     /* clear local abbrevs */
-  free(buf->b_start_fenc);
-  buf->b_start_fenc = NULL;
-}
-
-/*
- * Free the b_wininfo list for buffer "buf".
- */
-static void clear_wininfo(buf_T *buf)
-{
-  wininfo_T   *wip;
-
-  while (buf->b_wininfo != NULL) {
-    wip = buf->b_wininfo;
-    buf->b_wininfo = wip->wi_next;
-    if (wip->wi_optset) {
-      clear_winopt(&wip->wi_opt);
-      deleteFoldRecurse(&wip->wi_folds);
-    }
-    free(wip);
-  }
-}
-
-/*
- * Go to another buffer.  Handles the result of the ATTENTION dialog.
- */
-void goto_buffer(exarg_T *eap, int start, int dir, int count)
-{
-# if defined(FEAT_WINDOWS) && defined(HAS_SWAP_EXISTS_ACTION)
-  buf_T       *old_curbuf = curbuf;
-
-  swap_exists_action = SEA_DIALOG;
-# endif
-  (void)do_buffer(*eap->cmd == 's' ? DOBUF_SPLIT : DOBUF_GOTO,
-      start, dir, count, eap->forceit);
-# if defined(FEAT_WINDOWS) && defined(HAS_SWAP_EXISTS_ACTION)
-  if (swap_exists_action == SEA_QUIT && *eap->cmd == 's') {
-    cleanup_T cs;
-
-    /* Reset the error/interrupt/exception state here so that
-     * aborting() returns FALSE when closing a window. */
-    enter_cleanup(&cs);
-
-    /* Quitting means closing the split window, nothing else. */
-    win_close(curwin, TRUE);
-    swap_exists_action = SEA_NONE;
-    swap_exists_did_quit = TRUE;
-
-    /* Restore the error/interrupt/exception state if not discarded by a
-     * new aborting error, interrupt, or uncaught exception. */
-    leave_cleanup(&cs);
-  } else
-    handle_swap_exists(old_curbuf);
-# endif
-}
-
-#if defined(HAS_SWAP_EXISTS_ACTION) || defined(PROTO)
-/*
- * Handle the situation of swap_exists_action being set.
- * It is allowed for "old_curbuf" to be NULL or invalid.
- */
-void handle_swap_exists(buf_T *old_curbuf)
-{
-  cleanup_T cs;
-  long old_tw = curbuf->b_p_tw;
-
-  if (swap_exists_action == SEA_QUIT) {
-    /* Reset the error/interrupt/exception state here so that
-     * aborting() returns FALSE when closing a buffer. */
-    enter_cleanup(&cs);
-
-    /* User selected Quit at ATTENTION prompt.  Go back to previous
-     * buffer.  If that buffer is gone or the same as the current one,
-     * open a new, empty buffer. */
-    swap_exists_action = SEA_NONE;      /* don't want it again */
-    swap_exists_did_quit = TRUE;
-    close_buffer(curwin, curbuf, DOBUF_UNLOAD, FALSE);
-    if (!buf_valid(old_curbuf) || old_curbuf == curbuf)
-      old_curbuf = buflist_new(NULL, NULL, 1L, BLN_CURBUF | BLN_LISTED);
-    if (old_curbuf != NULL) {
-      enter_buffer(old_curbuf);
-      if (old_tw != curbuf->b_p_tw)
-        check_colorcolumn(curwin);
-    }
-    /* If "old_curbuf" is NULL we are in big trouble here... */
-
-    /* Restore the error/interrupt/exception state if not discarded by a
-     * new aborting error, interrupt, or uncaught exception. */
-    leave_cleanup(&cs);
-  } else if (swap_exists_action == SEA_RECOVER) {
-    /* Reset the error/interrupt/exception state here so that
-     * aborting() returns FALSE when closing a buffer. */
-    enter_cleanup(&cs);
-
-    /* User selected Recover at ATTENTION prompt. */
-    msg_scroll = TRUE;
-    ml_recover();
-    MSG_PUTS("\n");     /* don't overwrite the last message */
-    cmdline_row = msg_row;
-    do_modelines(0);
-
-    /* Restore the error/interrupt/exception state if not discarded by a
-     * new aborting error, interrupt, or uncaught exception. */
-    leave_cleanup(&cs);
-  }
-  swap_exists_action = SEA_NONE;
-}
-#endif
-
-/*
- * do_bufdel() - delete or unload buffer(s)
- *
- * addr_count == 0: ":bdel" - delete current buffer
- * addr_count == 1: ":N bdel" or ":bdel N [N ..]" - first delete
- *		    buffer "end_bnr", then any other arguments.
- * addr_count == 2: ":N,N bdel" - delete buffers in range
- *
- * command can be DOBUF_UNLOAD (":bunload"), DOBUF_WIPE (":bwipeout") or
- * DOBUF_DEL (":bdel")
- *
- * Returns error message or NULL
- */
-char_u *
-do_bufdel (
-    int command,
-    char_u *arg,               /* pointer to extra arguments */
-    int addr_count,
-    int start_bnr,                  /* first buffer number in a range */
-    int end_bnr,                    /* buffer nr or last buffer nr in a range */
-    int forceit
-)
-{
-  int do_current = 0;           /* delete current buffer? */
-  int deleted = 0;              /* number of buffers deleted */
-  char_u      *errormsg = NULL;   /* return value */
-  int bnr;                      /* buffer number */
-  char_u      *p;
-
-  if (addr_count == 0) {
-    (void)do_buffer(command, DOBUF_CURRENT, FORWARD, 0, forceit);
-  } else {
-    if (addr_count == 2) {
-      if (*arg)                 /* both range and argument is not allowed */
-        return (char_u *)_(e_trailing);
-      bnr = start_bnr;
-    } else      /* addr_count == 1 */
-      bnr = end_bnr;
-
-    for (; !got_int; ui_breakcheck()) {
-      /*
-       * delete the current buffer last, otherwise when the
-       * current buffer is deleted, the next buffer becomes
-       * the current one and will be loaded, which may then
-       * also be deleted, etc.
-       */
-      if (bnr == curbuf->b_fnum)
-        do_current = bnr;
-      else if (do_buffer(command, DOBUF_FIRST, FORWARD, (int)bnr,
-                   forceit) == OK)
-        ++deleted;
-
-      /*
-       * find next buffer number to delete/unload
-       */
-      if (addr_count == 2) {
-        if (++bnr > end_bnr)
-          break;
-      } else {    /* addr_count == 1 */
-        arg = skipwhite(arg);
-        if (*arg == NUL)
-          break;
-        if (!VIM_ISDIGIT(*arg)) {
-          p = skiptowhite_esc(arg);
-          bnr = buflist_findpat(arg, p, command == DOBUF_WIPE,
-              FALSE, FALSE);
-          if (bnr < 0)                      /* failed */
-            break;
-          arg = p;
-        } else
-          bnr = getdigits(&arg);
-      }
-    }
-    if (!got_int && do_current && do_buffer(command, DOBUF_FIRST,
-            FORWARD, do_current, forceit) == OK)
-      ++deleted;
-
-    if (deleted == 0) {
-      if (command == DOBUF_UNLOAD)
-        STRCPY(IObuff, _("E515: No buffers were unloaded"));
-      else if (command == DOBUF_DEL)
-        STRCPY(IObuff, _("E516: No buffers were deleted"));
-      else
-        STRCPY(IObuff, _("E517: No buffers were wiped out"));
-      errormsg = IObuff;
-    } else if (deleted >= p_report) {
-      if (command == DOBUF_UNLOAD) {
-        if (deleted == 1)
-          MSG(_("1 buffer unloaded"));
-        else
-          smsg((char_u *)_("%d buffers unloaded"), deleted);
-      } else if (command == DOBUF_DEL) {
-        if (deleted == 1)
-          MSG(_("1 buffer deleted"));
-        else
-          smsg((char_u *)_("%d buffers deleted"), deleted);
-      } else {
-        if (deleted == 1)
-          MSG(_("1 buffer wiped out"));
-        else
-          smsg((char_u *)_("%d buffers wiped out"), deleted);
-      }
-    }
-  }
-
-
-  return errormsg;
-}
-
-
-static int empty_curbuf(int close_others, int forceit, int action);
-
-/*
- * Make the current buffer empty.
- * Used when it is wiped out and it's the last buffer.
- */
-static int empty_curbuf(int close_others, int forceit, int action)
-{
-  int retval;
-  buf_T   *buf = curbuf;
-
-  if (action == DOBUF_UNLOAD) {
-    EMSG(_("E90: Cannot unload last buffer"));
-    return FAIL;
-  }
-
-  if (close_others) {
-    /* Close any other windows on this buffer, then make it empty. */
-    close_windows(buf, TRUE);
-  }
-
-  setpcmark();
-  retval = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE,
-      forceit ? ECMD_FORCEIT : 0, curwin);
-
-  /*
-   * do_ecmd() may create a new buffer, then we have to delete
-   * the old one.  But do_ecmd() may have done that already, check
-   * if the buffer still exists.
-   */
-  if (buf != curbuf && buf_valid(buf) && buf->b_nwindows == 0)
-    close_buffer(NULL, buf, action, FALSE);
-  if (!close_others)
-    need_fileinfo = FALSE;
-  return retval;
-}
-/*
- * Implementation of the commands for the buffer list.
- *
- * action == DOBUF_GOTO	    go to specified buffer
- * action == DOBUF_SPLIT    split window and go to specified buffer
- * action == DOBUF_UNLOAD   unload specified buffer(s)
- * action == DOBUF_DEL	    delete specified buffer(s) from buffer list
- * action == DOBUF_WIPE	    delete specified buffer(s) really
- *
- * start == DOBUF_CURRENT   go to "count" buffer from current buffer
- * start == DOBUF_FIRST	    go to "count" buffer from first buffer
- * start == DOBUF_LAST	    go to "count" buffer from last buffer
- * start == DOBUF_MOD	    go to "count" modified buffer from current buffer
- *
- * Return FAIL or OK.
- */
-int 
-do_buffer (
-    int action,
-    int start,
-    int dir,                        /* FORWARD or BACKWARD */
-    int count,                      /* buffer number or number of buffers */
-    int forceit                    /* TRUE for :...! */
-)
-{
-  buf_T       *buf;
-  buf_T       *bp;
-  int unload = (action == DOBUF_UNLOAD || action == DOBUF_DEL
-                || action == DOBUF_WIPE);
-
-  switch (start) {
-  case DOBUF_FIRST:   buf = firstbuf; break;
-  case DOBUF_LAST:    buf = lastbuf;  break;
-  default:            buf = curbuf;   break;
-  }
-  if (start == DOBUF_MOD) {         /* find next modified buffer */
-    while (count-- > 0) {
-      do {
-        buf = buf->b_next;
-        if (buf == NULL)
-          buf = firstbuf;
-      } while (buf != curbuf && !bufIsChanged(buf));
-    }
-    if (!bufIsChanged(buf)) {
-      EMSG(_("E84: No modified buffer found"));
-      return FAIL;
-    }
-  } else if (start == DOBUF_FIRST && count) { /* find specified buffer number */
-    while (buf != NULL && buf->b_fnum != count)
-      buf = buf->b_next;
-  } else {
-    bp = NULL;
-    while (count > 0 || (!unload && !buf->b_p_bl && bp != buf)) {
-      /* remember the buffer where we start, we come back there when all
-       * buffers are unlisted. */
-      if (bp == NULL)
-        bp = buf;
-      if (dir == FORWARD) {
-        buf = buf->b_next;
-        if (buf == NULL)
-          buf = firstbuf;
-      } else {
-        buf = buf->b_prev;
-        if (buf == NULL)
-          buf = lastbuf;
-      }
-      /* don't count unlisted buffers */
-      if (unload || buf->b_p_bl) {
-        --count;
-        bp = NULL;              /* use this buffer as new starting point */
-      }
-      if (bp == buf) {
-        /* back where we started, didn't find anything. */
-        EMSG(_("E85: There is no listed buffer"));
-        return FAIL;
-      }
-    }
-  }
-
-  if (buf == NULL) {        /* could not find it */
-    if (start == DOBUF_FIRST) {
-      /* don't warn when deleting */
-      if (!unload)
-        EMSGN(_("E86: Buffer %" PRId64 " does not exist"), count);
-    } else if (dir == FORWARD)
-      EMSG(_("E87: Cannot go beyond last buffer"));
-    else
-      EMSG(_("E88: Cannot go before first buffer"));
-    return FAIL;
-  }
-
-
-  /*
-   * delete buffer buf from memory and/or the list
-   */
-  if (unload) {
-    int forward;
-
-    /* When unloading or deleting a buffer that's already unloaded and
-     * unlisted: fail silently. */
-    if (action != DOBUF_WIPE && buf->b_ml.ml_mfp == NULL && !buf->b_p_bl)
-      return FAIL;
-
-    if (!forceit && bufIsChanged(buf)) {
-      if ((p_confirm || cmdmod.confirm) && p_write) {
-        dialog_changed(buf, FALSE);
-        if (!buf_valid(buf))
-          /* Autocommand deleted buffer, oops!  It's not changed
-           * now. */
-          return FAIL;
-        /* If it's still changed fail silently, the dialog already
-         * mentioned why it fails. */
-        if (bufIsChanged(buf))
-          return FAIL;
-      } else {
-        EMSGN(_("E89: No write since last change for buffer %" PRId64
-                " (add ! to override)"),
-              buf->b_fnum);
-        return FAIL;
-      }
-    }
-
-    /*
-     * If deleting the last (listed) buffer, make it empty.
-     * The last (listed) buffer cannot be unloaded.
-     */
-    for (bp = firstbuf; bp != NULL; bp = bp->b_next)
-      if (bp->b_p_bl && bp != buf)
-        break;
-    if (bp == NULL && buf == curbuf)
-      return empty_curbuf(TRUE, forceit, action);
-
-    /*
-     * If the deleted buffer is the current one, close the current window
-     * (unless it's the only window).  Repeat this so long as we end up in
-     * a window with this buffer.
-     */
-    while (buf == curbuf
-           && !(curwin->w_closing || curwin->w_buffer->b_closing)
-           && (firstwin != lastwin || first_tabpage->tp_next != NULL)) {
-      if (win_close(curwin, FALSE) == FAIL)
-        break;
-    }
-
-    /*
-     * If the buffer to be deleted is not the current one, delete it here.
-     */
-    if (buf != curbuf) {
-      close_windows(buf, FALSE);
-      if (buf != curbuf && buf_valid(buf) && buf->b_nwindows <= 0)
-        close_buffer(NULL, buf, action, FALSE);
-      return OK;
-    }
-
-    /*
-     * Deleting the current buffer: Need to find another buffer to go to.
-     * There should be another, otherwise it would have been handled
-     * above.  However, autocommands may have deleted all buffers.
-     * First use au_new_curbuf, if it is valid.
-     * Then prefer the buffer we most recently visited.
-     * Else try to find one that is loaded, after the current buffer,
-     * then before the current buffer.
-     * Finally use any buffer.
-     */
-    buf = NULL;         /* selected buffer */
-    bp = NULL;          /* used when no loaded buffer found */
-    if (au_new_curbuf != NULL && buf_valid(au_new_curbuf))
-      buf = au_new_curbuf;
-    else if (curwin->w_jumplistlen > 0) {
-      int jumpidx;
-
-      jumpidx = curwin->w_jumplistidx - 1;
-      if (jumpidx < 0)
-        jumpidx = curwin->w_jumplistlen - 1;
-
-      forward = jumpidx;
-      while (jumpidx != curwin->w_jumplistidx) {
-        buf = buflist_findnr(curwin->w_jumplist[jumpidx].fmark.fnum);
-        if (buf != NULL) {
-          if (buf == curbuf || !buf->b_p_bl)
-            buf = NULL;                 /* skip current and unlisted bufs */
-          else if (buf->b_ml.ml_mfp == NULL) {
-            /* skip unloaded buf, but may keep it for later */
-            if (bp == NULL)
-              bp = buf;
-            buf = NULL;
-          }
-        }
-        if (buf != NULL)           /* found a valid buffer: stop searching */
-          break;
-        /* advance to older entry in jump list */
-        if (!jumpidx && curwin->w_jumplistidx == curwin->w_jumplistlen)
-          break;
-        if (--jumpidx < 0)
-          jumpidx = curwin->w_jumplistlen - 1;
-        if (jumpidx == forward)                 /* List exhausted for sure */
-          break;
-      }
-    }
-
-    if (buf == NULL) {          /* No previous buffer, Try 2'nd approach */
-      forward = TRUE;
-      buf = curbuf->b_next;
-      for (;; ) {
-        if (buf == NULL) {
-          if (!forward)                 /* tried both directions */
-            break;
-          buf = curbuf->b_prev;
-          forward = FALSE;
-          continue;
-        }
-        /* in non-help buffer, try to skip help buffers, and vv */
-        if (buf->b_help == curbuf->b_help && buf->b_p_bl) {
-          if (buf->b_ml.ml_mfp != NULL)             /* found loaded buffer */
-            break;
-          if (bp == NULL)               /* remember unloaded buf for later */
-            bp = buf;
-        }
-        if (forward)
-          buf = buf->b_next;
-        else
-          buf = buf->b_prev;
-      }
-    }
-    if (buf == NULL)            /* No loaded buffer, use unloaded one */
-      buf = bp;
-    if (buf == NULL) {          /* No loaded buffer, find listed one */
-      for (buf = firstbuf; buf != NULL; buf = buf->b_next)
-        if (buf->b_p_bl && buf != curbuf)
-          break;
-    }
-    if (buf == NULL) {          /* Still no buffer, just take one */
-      if (curbuf->b_next != NULL)
-        buf = curbuf->b_next;
-      else
-        buf = curbuf->b_prev;
-    }
-  }
-
-  if (buf == NULL) {
-    /* Autocommands must have wiped out all other buffers.  Only option
-     * now is to make the current buffer empty. */
-    return empty_curbuf(FALSE, forceit, action);
-  }
-
-  /*
-   * make buf current buffer
-   */
-  if (action == DOBUF_SPLIT) {      /* split window first */
-    /* If 'switchbuf' contains "useopen": jump to first window containing
-     * "buf" if one exists */
-    if ((swb_flags & SWB_USEOPEN) && buf_jump_open_win(buf))
-      return OK;
-    /* If 'switchbuf' contains "usetab": jump to first window in any tab
-     * page containing "buf" if one exists */
-    if ((swb_flags & SWB_USETAB) && buf_jump_open_tab(buf))
-      return OK;
-    if (win_split(0, 0) == FAIL)
-      return FAIL;
-  }
-
-  /* go to current buffer - nothing to do */
-  if (buf == curbuf)
-    return OK;
-
-  /*
-   * Check if the current buffer may be abandoned.
-   */
-  if (action == DOBUF_GOTO && !can_abandon(curbuf, forceit)) {
-    if ((p_confirm || cmdmod.confirm) && p_write) {
-      dialog_changed(curbuf, FALSE);
-      if (!buf_valid(buf))
-        /* Autocommand deleted buffer, oops! */
-        return FAIL;
-    }
-    if (bufIsChanged(curbuf)) {
-      EMSG(_(e_nowrtmsg));
-      return FAIL;
-    }
-  }
-
-  /* Go to the other buffer. */
-  set_curbuf(buf, action);
-
-#if defined(FEAT_LISTCMDS) \
-  && (defined(FEAT_SCROLLBIND) || defined(FEAT_CURSORBIND))
-  if (action == DOBUF_SPLIT) {
-    RESET_BINDING(curwin);      /* reset 'scrollbind' and 'cursorbind' */
-  }
-#endif
-
-  if (aborting())           /* autocmds may abort script processing */
-    return FAIL;
-
-  return OK;
-}
-
-
-/*
- * Set current buffer to "buf".  Executes autocommands and closes current
- * buffer.  "action" tells how to close the current buffer:
- * DOBUF_GOTO	    free or hide it
- * DOBUF_SPLIT	    nothing
- * DOBUF_UNLOAD	    unload it
- * DOBUF_DEL	    delete it
- * DOBUF_WIPE	    wipe it out
- */
-void set_curbuf(buf_T *buf, int action)
-{
-  buf_T       *prevbuf;
-  int unload = (action == DOBUF_UNLOAD || action == DOBUF_DEL
-                || action == DOBUF_WIPE);
-  long old_tw = curbuf->b_p_tw;
-
-  setpcmark();
-  if (!cmdmod.keepalt)
-    curwin->w_alt_fnum = curbuf->b_fnum;     /* remember alternate file */
-  buflist_altfpos(curwin);                       /* remember curpos */
-
-  /* Don't restart Select mode after switching to another buffer. */
-  VIsual_reselect = FALSE;
-
-  /* close_windows() or apply_autocmds() may change curbuf */
-  prevbuf = curbuf;
-
-  apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
-  if (buf_valid(prevbuf) && !aborting()) {
-    if (prevbuf == curwin->w_buffer)
-      reset_synblock(curwin);
-    if (unload)
-      close_windows(prevbuf, FALSE);
-    if (buf_valid(prevbuf) && !aborting()) {
-      win_T  *previouswin = curwin;
-      if (prevbuf == curbuf)
-        u_sync(FALSE);
-      close_buffer(prevbuf == curwin->w_buffer ? curwin : NULL, prevbuf,
-          unload ? action : (action == DOBUF_GOTO
-                             && !P_HID(prevbuf)
-                             && !bufIsChanged(
-                                 prevbuf)) ? DOBUF_UNLOAD : 0, FALSE);
-      if (curwin != previouswin && win_valid(previouswin))
-        /* autocommands changed curwin, Grr! */
-        curwin = previouswin;
-    }
-  }
-  /* An autocommand may have deleted "buf", already entered it (e.g., when
-   * it did ":bunload") or aborted the script processing!
-   * If curwin->w_buffer is null, enter_buffer() will make it valid again */
-  if ((buf_valid(buf) && buf != curbuf
-       && !aborting()
-       ) || curwin->w_buffer == NULL
-      ) {
-    enter_buffer(buf);
-    if (old_tw != curbuf->b_p_tw)
-      check_colorcolumn(curwin);
-  }
-}
-
-/*
- * Enter a new current buffer.
- * Old curbuf must have been abandoned already!  This also means "curbuf" may
- * be pointing to freed memory.
- */
-void enter_buffer(buf_T *buf)
-{
-  /* Copy buffer and window local option values.  Not for a help buffer. */
-  buf_copy_options(buf, BCO_ENTER | BCO_NOHELP);
-  if (!buf->b_help)
-    get_winopts(buf);
-  else
-    /* Remove all folds in the window. */
-    clearFolding(curwin);
-  foldUpdateAll(curwin);        /* update folds (later). */
-
-  /* Get the buffer in the current window. */
-  curwin->w_buffer = buf;
-  curbuf = buf;
-  ++curbuf->b_nwindows;
-
-  if (curwin->w_p_diff)
-    diff_buf_add(curbuf);
-
-  curwin->w_s = &(buf->b_s);
-
-  /* Cursor on first line by default. */
-  curwin->w_cursor.lnum = 1;
-  curwin->w_cursor.col = 0;
-  curwin->w_cursor.coladd = 0;
-  curwin->w_set_curswant = TRUE;
-  curwin->w_topline_was_set = FALSE;
-
-  /* mark cursor position as being invalid */
-  curwin->w_valid = 0;
-
-  /* Make sure the buffer is loaded. */
-  if (curbuf->b_ml.ml_mfp == NULL) {    /* need to load the file */
-    /* If there is no filetype, allow for detecting one.  Esp. useful for
-     * ":ball" used in a autocommand.  If there already is a filetype we
-     * might prefer to keep it. */
-    if (*curbuf->b_p_ft == NUL)
-      did_filetype = FALSE;
-
-    open_buffer(FALSE, NULL, 0);
-  } else {
-    if (!msg_silent)
-      need_fileinfo = TRUE;             /* display file info after redraw */
-    (void)buf_check_timestamp(curbuf, FALSE);     /* check if file changed */
-    curwin->w_topline = 1;
-    curwin->w_topfill = 0;
-    apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
-    apply_autocmds(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf);
-  }
-
-  /* If autocommands did not change the cursor position, restore cursor lnum
-   * and possibly cursor col. */
-  if (curwin->w_cursor.lnum == 1 && inindent(0))
-    buflist_getfpos();
-
-  check_arg_idx(curwin);                /* check for valid arg_idx */
-  maketitle();
-  /* when autocmds didn't change it */
-  if (curwin->w_topline == 1 && !curwin->w_topline_was_set)
-    scroll_cursor_halfway(FALSE);       /* redisplay at correct position */
-
-
-  /* Change directories when the 'acd' option is set. */
-  do_autochdir();
-
-  if (curbuf->b_kmap_state & KEYMAP_INIT)
-    (void)keymap_init();
-  /* May need to set the spell language.  Can only do this after the buffer
-   * has been properly setup. */
-  if (!curbuf->b_help && curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL)
-    (void)did_set_spelllang(curwin);
-
-  redraw_later(NOT_VALID);
-}
-
-/*
- * Change to the directory of the current buffer.
- */
-void do_autochdir(void)
-{
-  if (p_acd) {
-    if (curbuf->b_ffname != NULL && vim_chdirfile(curbuf->b_ffname) == OK) {
-      shorten_fnames(TRUE);
-    }
-  }
-}
-
-/*
- * functions for dealing with the buffer list
- */
-
-/*
- * Add a file name to the buffer list.  Return a pointer to the buffer.
- * If the same file name already exists return a pointer to that buffer.
- * If it does not exist, or if fname == NULL, a new entry is created.
- * If (flags & BLN_CURBUF) is TRUE, may use current buffer.
- * If (flags & BLN_LISTED) is TRUE, add new buffer to buffer list.
- * If (flags & BLN_DUMMY) is TRUE, don't count it as a real buffer.
- * This is the ONLY way to create a new buffer.
- */
-static int top_file_num = 1;            /* highest file number */
-
-buf_T *
-buflist_new (
-    char_u *ffname,            /* full path of fname or relative */
-    char_u *sfname,            /* short fname or NULL */
-    linenr_T lnum,                  /* preferred cursor line */
-    int flags                      /* BLN_ defines */
-)
-{
-  buf_T       *buf;
-
-  fname_expand(curbuf, &ffname, &sfname);       /* will allocate ffname */
-
-  /*
-   * If file name already exists in the list, update the entry.
-   */
-  /* We can use inode numbers when the file exists.  Works better
-   * for hard links. */
-  FileInfo file_info;
-  if (sfname == NULL || !os_get_file_info((char *)sfname, &file_info)) {
-    file_info.stat.st_dev = INVALID_DEVICE_ID;
-  }
-  if (ffname != NULL && !(flags & BLN_DUMMY)
-      && (buf = buflist_findname_file_info(ffname, &file_info)) != NULL) {
-    free(ffname);
-    if (lnum != 0)
-      buflist_setfpos(buf, curwin, lnum, (colnr_T)0, FALSE);
-    /* copy the options now, if 'cpo' doesn't have 's' and not done
-     * already */
-    buf_copy_options(buf, 0);
-    if ((flags & BLN_LISTED) && !buf->b_p_bl) {
-      buf->b_p_bl = TRUE;
-      if (!(flags & BLN_DUMMY)) {
-        apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, buf);
-        if (!buf_valid(buf)) {
-          return NULL;
-        }
-      }
-    }
-    return buf;
-  }
-
-  /*
-   * If the current buffer has no name and no contents, use the current
-   * buffer.	Otherwise: Need to allocate a new buffer structure.
-   *
-   * This is the ONLY place where a new buffer structure is allocated!
-   * (A spell file buffer is allocated in spell.c, but that's not a normal
-   * buffer.)
-   */
-  buf = NULL;
-  if ((flags & BLN_CURBUF)
-      && curbuf != NULL
-      && curbuf->b_ffname == NULL
-      && curbuf->b_nwindows <= 1
-      && (curbuf->b_ml.ml_mfp == NULL || bufempty())) {
-    buf = curbuf;
-    /* It's like this buffer is deleted.  Watch out for autocommands that
-     * change curbuf!  If that happens, allocate a new buffer anyway. */
-    if (curbuf->b_p_bl)
-      apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
-    if (buf == curbuf)
-      apply_autocmds(EVENT_BUFWIPEOUT, NULL, NULL, FALSE, curbuf);
-    if (aborting())             /* autocmds may abort script processing */
-      return NULL;
-    if (buf == curbuf) {
-      /* Make sure 'bufhidden' and 'buftype' are empty */
-      clear_string_option(&buf->b_p_bh);
-      clear_string_option(&buf->b_p_bt);
-    }
-  }
-  if (buf != curbuf || curbuf == NULL) {
-    buf = xcalloc(1, sizeof(buf_T));
-    /* init b: variables */
-    buf->b_vars = dict_alloc();
-    init_var_dict(buf->b_vars, &buf->b_bufvar, VAR_SCOPE);
-  }
-
-  if (ffname != NULL) {
-    buf->b_ffname = ffname;
-    buf->b_sfname = vim_strsave(sfname);
-  }
-
-  clear_wininfo(buf);
-  buf->b_wininfo = xcalloc(1, sizeof(wininfo_T));
-
-  if (ffname != NULL && (buf->b_ffname == NULL || buf->b_sfname == NULL)) {
-    free(buf->b_ffname);
-    buf->b_ffname = NULL;
-    free(buf->b_sfname);
-    buf->b_sfname = NULL;
-    if (buf != curbuf)
-      free_buffer(buf);
-    return NULL;
-  }
-
-  if (buf == curbuf) {
-    /* free all things allocated for this buffer */
-    buf_freeall(buf, 0);
-    if (buf != curbuf)           /* autocommands deleted the buffer! */
-      return NULL;
-    if (aborting())             /* autocmds may abort script processing */
-      return NULL;
-    /* buf->b_nwindows = 0; why was this here? */
-    free_buffer_stuff(buf, FALSE);      /* delete local variables et al. */
-
-    /* Init the options. */
-    buf->b_p_initialized = FALSE;
-    buf_copy_options(buf, BCO_ENTER);
-
-    /* need to reload lmaps and set b:keymap_name */
-    curbuf->b_kmap_state |= KEYMAP_INIT;
-  } else {
-    /*
-     * put new buffer at the end of the buffer list
-     */
-    buf->b_next = NULL;
-    if (firstbuf == NULL) {             /* buffer list is empty */
-      buf->b_prev = NULL;
-      firstbuf = buf;
-    } else {                          /* append new buffer at end of list */
-      lastbuf->b_next = buf;
-      buf->b_prev = lastbuf;
-    }
-    lastbuf = buf;
-
-    buf->b_fnum = top_file_num++;
-    if (top_file_num < 0) {             /* wrap around (may cause duplicates) */
-      EMSG(_("W14: Warning: List of file names overflow"));
-      if (emsg_silent == 0) {
-        out_flush();
-        ui_delay(3000L, TRUE);          /* make sure it is noticed */
-      }
-      top_file_num = 1;
-    }
-
-    /*
-     * Always copy the options from the current buffer.
-     */
-    buf_copy_options(buf, BCO_ALWAYS);
-  }
-
-  buf->b_wininfo->wi_fpos.lnum = lnum;
-  buf->b_wininfo->wi_win = curwin;
-
-  hash_init(&buf->b_s.b_keywtab);
-  hash_init(&buf->b_s.b_keywtab_ic);
-
-  buf->b_fname = buf->b_sfname;
-  if (file_info.stat.st_dev == INVALID_DEVICE_ID)
-    buf->b_dev_valid = FALSE;
-  else {
-    buf->b_dev_valid = TRUE;
-    buf->b_dev = file_info.stat.st_dev;
-    buf->b_ino = file_info.stat.st_ino;
-  }
-  buf->b_u_synced = TRUE;
-  buf->b_flags = BF_CHECK_RO | BF_NEVERLOADED;
-  if (flags & BLN_DUMMY)
-    buf->b_flags |= BF_DUMMY;
-  buf_clear_file(buf);
-  clrallmarks(buf);                     /* clear marks */
-  fmarks_check_names(buf);              /* check file marks for this file */
-  buf->b_p_bl = (flags & BLN_LISTED) ? TRUE : FALSE;    /* init 'buflisted' */
-  if (!(flags & BLN_DUMMY)) {
-    apply_autocmds(EVENT_BUFNEW, NULL, NULL, FALSE, buf);
-    if (!buf_valid(buf)) {
-      return NULL;
-    }
-    if (flags & BLN_LISTED) {
-      apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, buf);
-      if (!buf_valid(buf)) {
-        return NULL;
-      }
-    }
-    if (aborting())             /* autocmds may abort script processing */
-      return NULL;
-  }
-
-  return buf;
-}
-
-/*
- * Free the memory for the options of a buffer.
- * If "free_p_ff" is TRUE also free 'fileformat', 'buftype' and
- * 'fileencoding'.
- */
-void free_buf_options(buf_T *buf, int free_p_ff)
-{
-  if (free_p_ff) {
-    clear_string_option(&buf->b_p_fenc);
-    clear_string_option(&buf->b_p_ff);
-    clear_string_option(&buf->b_p_bh);
-    clear_string_option(&buf->b_p_bt);
-  }
-  clear_string_option(&buf->b_p_def);
-  clear_string_option(&buf->b_p_inc);
-  clear_string_option(&buf->b_p_inex);
-  clear_string_option(&buf->b_p_inde);
-  clear_string_option(&buf->b_p_indk);
-  clear_string_option(&buf->b_p_cm);
-  clear_string_option(&buf->b_p_fex);
-  clear_string_option(&buf->b_p_key);
-  clear_string_option(&buf->b_p_kp);
-  clear_string_option(&buf->b_p_mps);
-  clear_string_option(&buf->b_p_fo);
-  clear_string_option(&buf->b_p_flp);
-  clear_string_option(&buf->b_p_isk);
-  clear_string_option(&buf->b_p_keymap);
-  ga_clear(&buf->b_kmap_ga);
-  clear_string_option(&buf->b_p_com);
-  clear_string_option(&buf->b_p_cms);
-  clear_string_option(&buf->b_p_nf);
-  clear_string_option(&buf->b_p_syn);
-  clear_string_option(&buf->b_s.b_p_spc);
-  clear_string_option(&buf->b_s.b_p_spf);
-  vim_regfree(buf->b_s.b_cap_prog);
-  buf->b_s.b_cap_prog = NULL;
-  clear_string_option(&buf->b_s.b_p_spl);
-  clear_string_option(&buf->b_p_sua);
-  clear_string_option(&buf->b_p_ft);
-  clear_string_option(&buf->b_p_cink);
-  clear_string_option(&buf->b_p_cino);
-  clear_string_option(&buf->b_p_cinw);
-  clear_string_option(&buf->b_p_cpt);
-  clear_string_option(&buf->b_p_cfu);
-  clear_string_option(&buf->b_p_ofu);
-  clear_string_option(&buf->b_p_gp);
-  clear_string_option(&buf->b_p_mp);
-  clear_string_option(&buf->b_p_efm);
-  clear_string_option(&buf->b_p_ep);
-  clear_string_option(&buf->b_p_path);
-  clear_string_option(&buf->b_p_tags);
-  clear_string_option(&buf->b_p_dict);
-  clear_string_option(&buf->b_p_tsr);
-  clear_string_option(&buf->b_p_qe);
-  buf->b_p_ar = -1;
-  buf->b_p_ul = NO_LOCAL_UNDOLEVEL;
-}
-
-/*
- * get alternate file n
- * set linenr to lnum or altfpos.lnum if lnum == 0
- *	also set cursor column to altfpos.col if 'startofline' is not set.
- * if (options & GETF_SETMARK) call setpcmark()
- * if (options & GETF_ALT) we are jumping to an alternate file.
- * if (options & GETF_SWITCH) respect 'switchbuf' settings when jumping
- *
- * return FAIL for failure, OK for success
- */
-int buflist_getfile(int n, linenr_T lnum, int options, int forceit)
-{
-  buf_T       *buf;
-  win_T       *wp = NULL;
-  pos_T       *fpos;
-  colnr_T col;
-
-  buf = buflist_findnr(n);
-  if (buf == NULL) {
-    if ((options & GETF_ALT) && n == 0)
-      EMSG(_(e_noalt));
-    else
-      EMSGN(_("E92: Buffer %" PRId64 " not found"), n);
-    return FAIL;
-  }
-
-  /* if alternate file is the current buffer, nothing to do */
-  if (buf == curbuf)
-    return OK;
-
-  if (text_locked()) {
-    text_locked_msg();
-    return FAIL;
-  }
-  if (curbuf_locked())
-    return FAIL;
-
-  /* altfpos may be changed by getfile(), get it now */
-  if (lnum == 0) {
-    fpos = buflist_findfpos(buf);
-    lnum = fpos->lnum;
-    col = fpos->col;
-  } else
-    col = 0;
-
-  if (options & GETF_SWITCH) {
-    /* If 'switchbuf' contains "useopen": jump to first window containing
-     * "buf" if one exists */
-    if (swb_flags & SWB_USEOPEN)
-      wp = buf_jump_open_win(buf);
-    /* If 'switchbuf' contains "usetab": jump to first window in any tab
-     * page containing "buf" if one exists */
-    if (wp == NULL && (swb_flags & SWB_USETAB))
-      wp = buf_jump_open_tab(buf);
-    /* If 'switchbuf' contains "split" or "newtab" and the current buffer
-     * isn't empty: open new window */
-    if (wp == NULL && (swb_flags & (SWB_SPLIT | SWB_NEWTAB)) && !bufempty()) {
-      if (swb_flags & SWB_NEWTAB)               /* Open in a new tab */
-        tabpage_new();
-      else if (win_split(0, 0) == FAIL)         /* Open in a new window */
-        return FAIL;
-      RESET_BINDING(curwin);
-    }
-  }
-
-  ++RedrawingDisabled;
-  if (getfile(buf->b_fnum, NULL, NULL, (options & GETF_SETMARK),
-          lnum, forceit) <= 0) {
-    --RedrawingDisabled;
-
-    /* cursor is at to BOL and w_cursor.lnum is checked due to getfile() */
-    if (!p_sol && col != 0) {
-      curwin->w_cursor.col = col;
-      check_cursor_col();
-      curwin->w_cursor.coladd = 0;
-      curwin->w_set_curswant = TRUE;
-    }
-    return OK;
-  }
-  --RedrawingDisabled;
-  return FAIL;
-}
-
-/*
- * go to the last know line number for the current buffer
- */
-void buflist_getfpos(void)
-{
-  pos_T       *fpos;
-
-  fpos = buflist_findfpos(curbuf);
-
-  curwin->w_cursor.lnum = fpos->lnum;
-  check_cursor_lnum();
-
-  if (p_sol)
-    curwin->w_cursor.col = 0;
-  else {
-    curwin->w_cursor.col = fpos->col;
-    check_cursor_col();
-    curwin->w_cursor.coladd = 0;
-    curwin->w_set_curswant = TRUE;
-  }
-}
-
-/*
- * Find file in buffer list by name (it has to be for the current window).
- * Returns NULL if not found.
- */
-buf_T *buflist_findname_exp(char_u *fname)
-{
-  char_u      *ffname;
-  buf_T       *buf = NULL;
-
-  /* First make the name into a full path name */
-  ffname = FullName_save(fname,
-#ifdef UNIX
-      TRUE                  /* force expansion, get rid of symbolic links */
-#else
-      FALSE
-#endif
-      );
-  if (ffname != NULL) {
-    buf = buflist_findname(ffname);
-    free(ffname);
-  }
-  return buf;
-}
-
-/*
- * Find file in buffer list by name (it has to be for the current window).
- * "ffname" must have a full path.
- * Skips dummy buffers.
- * Returns NULL if not found.
- */
-buf_T *buflist_findname(char_u *ffname)
-{
-  FileInfo file_info;
-  if (!os_get_file_info((char *)ffname, &file_info)) {
-    file_info.stat.st_dev = INVALID_DEVICE_ID;
-  }
-  return buflist_findname_file_info(ffname, &file_info);
-}
-
-/*
- * Same as buflist_findname(), but pass the FileInfo structure to avoid
- * getting it twice for the same file.
- * Returns NULL if not found.
- */
-static buf_T *buflist_findname_file_info(char_u *ffname, FileInfo *file_info)
-{
-  buf_T       *buf;
-
-  for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
-    if ((buf->b_flags & BF_DUMMY) == 0
-        && !otherfile_buf(buf, ffname, file_info)) {
-      return buf;
-    }
-  }
-  return NULL;
-}
-
-/*
- * Find file in buffer list by a regexp pattern.
- * Return fnum of the found buffer.
- * Return < 0 for error.
- */
-int 
-buflist_findpat (
-    char_u *pattern,
-    char_u *pattern_end,       /* pointer to first char after pattern */
-    int unlisted,                   /* find unlisted buffers */
-    int diffmode,             /* find diff-mode buffers only */
-    int curtab_only                /* find buffers in current tab only */
-)
-{
-  buf_T       *buf;
-  regprog_T   *prog;
-  int match = -1;
-  int find_listed;
-  char_u      *pat;
-  char_u      *patend;
-  int attempt;
-  char_u      *p;
-  int toggledollar;
-
-  if (pattern_end == pattern + 1 && (*pattern == '%' || *pattern == '#')) {
-    if (*pattern == '%')
-      match = curbuf->b_fnum;
-    else
-      match = curwin->w_alt_fnum;
-    if (diffmode && !diff_mode_buf(buflist_findnr(match)))
-      match = -1;
-  }
-  /*
-   * Try four ways of matching a listed buffer:
-   * attempt == 0: without '^' or '$' (at any position)
-   * attempt == 1: with '^' at start (only at position 0)
-   * attempt == 2: with '$' at end (only match at end)
-   * attempt == 3: with '^' at start and '$' at end (only full match)
-   * Repeat this for finding an unlisted buffer if there was no matching
-   * listed buffer.
-   */
-  else {
-    pat = file_pat_to_reg_pat(pattern, pattern_end, NULL, FALSE);
-    if (pat == NULL)
-      return -1;
-    patend = pat + STRLEN(pat) - 1;
-    toggledollar = (patend > pat && *patend == '$');
-
-    /* First try finding a listed buffer.  If not found and "unlisted"
-     * is TRUE, try finding an unlisted buffer. */
-    find_listed = TRUE;
-    for (;; ) {
-      for (attempt = 0; attempt <= 3; ++attempt) {
-        /* may add '^' and '$' */
-        if (toggledollar)
-          *patend = (attempt < 2) ? NUL : '$';           /* add/remove '$' */
-        p = pat;
-        if (*p == '^' && !(attempt & 1))                 /* add/remove '^' */
-          ++p;
-        prog = vim_regcomp(p, p_magic ? RE_MAGIC : 0);
-        if (prog == NULL) {
-          free(pat);
-          return -1;
-        }
-
-        for (buf = firstbuf; buf != NULL; buf = buf->b_next)
-          if (buf->b_p_bl == find_listed
-              && (!diffmode || diff_mode_buf(buf))
-              && buflist_match(prog, buf) != NULL) {
-            if (curtab_only) {
-              /* Ignore the match if the buffer is not open in
-               * the current tab. */
-              win_T       *wp;
-
-              for (wp = firstwin; wp != NULL; wp = wp->w_next)
-                if (wp->w_buffer == buf)
-                  break;
-              if (wp == NULL)
-                continue;
-            }
-            if (match >= 0) {                   /* already found a match */
-              match = -2;
-              break;
-            }
-            match = buf->b_fnum;                /* remember first match */
-          }
-
-        vim_regfree(prog);
-        if (match >= 0)                         /* found one match */
-          break;
-      }
-
-      /* Only search for unlisted buffers if there was no match with
-       * a listed buffer. */
-      if (!unlisted || !find_listed || match != -1)
-        break;
-      find_listed = FALSE;
-    }
-
-    free(pat);
-  }
-
-  if (match == -2)
-    EMSG2(_("E93: More than one match for %s"), pattern);
-  else if (match < 0)
-    EMSG2(_("E94: No matching buffer for %s"), pattern);
-  return match;
-}
-
-
-/*
- * Find all buffer names that match.
- * For command line expansion of ":buf" and ":sbuf".
- * Return OK if matches found, FAIL otherwise.
- */
-int ExpandBufnames(char_u *pat, int *num_file, char_u ***file, int options)
-{
-  int count = 0;
-  buf_T       *buf;
-  int round;
-  char_u      *p;
-  int attempt;
-  regprog_T   *prog;
-  char_u      *patc;
-
-  *num_file = 0;                    /* return values in case of FAIL */
-  *file = NULL;
-
-  /* Make a copy of "pat" and change "^" to "\(^\|[\/]\)". */
-  if (*pat == '^') {
-    patc = xmalloc(STRLEN(pat) + 11);
-    STRCPY(patc, "\\(^\\|[\\/]\\)");
-    STRCPY(patc + 11, pat + 1);
-  } else
-    patc = pat;
-
-  /*
-   * attempt == 0: try match with    '\<', match at start of word
-   * attempt == 1: try match without '\<', match anywhere
-   */
-  for (attempt = 0; attempt <= 1; ++attempt) {
-    if (attempt > 0 && patc == pat)
-      break;            /* there was no anchor, no need to try again */
-    prog = vim_regcomp(patc + attempt * 11, RE_MAGIC);
-    if (prog == NULL) {
-      if (patc != pat)
-        free(patc);
-      return FAIL;
-    }
-
-    /*
-     * round == 1: Count the matches.
-     * round == 2: Build the array to keep the matches.
-     */
-    for (round = 1; round <= 2; ++round) {
-      count = 0;
-      for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
-        if (!buf->b_p_bl)               /* skip unlisted buffers */
-          continue;
-        p = buflist_match(prog, buf);
-        if (p != NULL) {
-          if (round == 1)
-            ++count;
-          else {
-            if (options & WILD_HOME_REPLACE)
-              p = home_replace_save(buf, p);
-            else
-              p = vim_strsave(p);
-            (*file)[count++] = p;
-          }
-        }
-      }
-      if (count == 0)           /* no match found, break here */
-        break;
-      if (round == 1) {
-        *file = xmalloc(count * sizeof(**file));
-      }
-    }
-    vim_regfree(prog);
-    if (count)                  /* match(es) found, break here */
-      break;
-  }
-
-  if (patc != pat)
-    free(patc);
-
-  *num_file = count;
-  return count == 0 ? FAIL : OK;
-}
-
-
-#ifdef HAVE_BUFLIST_MATCH
-/*
- * Check for a match on the file name for buffer "buf" with regprog "prog".
- */
-static char_u *buflist_match(regprog_T *prog, buf_T *buf)
-{
-  char_u      *match;
-
-  /* First try the short file name, then the long file name. */
-  match = fname_match(prog, buf->b_sfname);
-  if (match == NULL)
-    match = fname_match(prog, buf->b_ffname);
-
-  return match;
-}
-
-/*
- * Try matching the regexp in "prog" with file name "name".
- * Return "name" when there is a match, NULL when not.
- */
-static char_u *fname_match(regprog_T *prog, char_u *name)
-{
-  char_u      *match = NULL;
-  char_u      *p;
-  regmatch_T regmatch;
-
-  if (name != NULL) {
-    regmatch.regprog = prog;
-    regmatch.rm_ic = p_fic;     /* ignore case when 'fileignorecase' is set */
-    if (vim_regexec(&regmatch, name, (colnr_T)0))
-      match = name;
-    else {
-      /* Replace $(HOME) with '~' and try matching again. */
-      p = home_replace_save(NULL, name);
-      if (p != NULL && vim_regexec(&regmatch, p, (colnr_T)0))
-        match = name;
-      free(p);
-    }
-  }
-
-  return match;
-}
-#endif
-
-/*
- * find file in buffer list by number
- */
-buf_T *buflist_findnr(int nr)
-{
-  buf_T       *buf;
-
-  if (nr == 0)
-    nr = curwin->w_alt_fnum;
-  for (buf = firstbuf; buf != NULL; buf = buf->b_next)
-    if (buf->b_fnum == nr)
-      return buf;
-  return NULL;
-}
-
-/*
- * Get name of file 'n' in the buffer list.
- * When the file has no name an empty string is returned.
- * home_replace() is used to shorten the file name (used for marks).
- * Returns a pointer to allocated memory, of NULL when failed.
- */
-char_u *
-buflist_nr2name (
-    int n,
-    int fullname,
-    int helptail                   /* for help buffers return tail only */
-)
-{
-  buf_T       *buf;
-
-  buf = buflist_findnr(n);
-  if (buf == NULL)
-    return NULL;
-  return home_replace_save(helptail ? buf : NULL,
-      fullname ? buf->b_ffname : buf->b_fname);
-}
-
-/*
- * Set the "lnum" and "col" for the buffer "buf" and the current window.
- * When "copy_options" is TRUE save the local window option values.
- * When "lnum" is 0 only do the options.
- */
-static void buflist_setfpos(buf_T *buf, win_T *win, linenr_T lnum, colnr_T col, int copy_options)
-{
-  wininfo_T   *wip;
-
-  for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
-    if (wip->wi_win == win)
-      break;
-  if (wip == NULL) {
-    /* allocate a new entry */
-    wip = xcalloc(1, sizeof(wininfo_T));
-    wip->wi_win = win;
-    if (lnum == 0)              /* set lnum even when it's 0 */
-      lnum = 1;
-  } else {
-    /* remove the entry from the list */
-    if (wip->wi_prev)
-      wip->wi_prev->wi_next = wip->wi_next;
-    else
-      buf->b_wininfo = wip->wi_next;
-    if (wip->wi_next)
-      wip->wi_next->wi_prev = wip->wi_prev;
-    if (copy_options && wip->wi_optset) {
-      clear_winopt(&wip->wi_opt);
-      deleteFoldRecurse(&wip->wi_folds);
-    }
-  }
-  if (lnum != 0) {
-    wip->wi_fpos.lnum = lnum;
-    wip->wi_fpos.col = col;
-  }
-  if (copy_options) {
-    /* Save the window-specific option values. */
-    copy_winopt(&win->w_onebuf_opt, &wip->wi_opt);
-    wip->wi_fold_manual = win->w_fold_manual;
-    cloneFoldGrowArray(&win->w_folds, &wip->wi_folds);
-    wip->wi_optset = TRUE;
-  }
-
-  /* insert the entry in front of the list */
-  wip->wi_next = buf->b_wininfo;
-  buf->b_wininfo = wip;
-  wip->wi_prev = NULL;
-  if (wip->wi_next)
-    wip->wi_next->wi_prev = wip;
-
-  return;
-}
-
-static int wininfo_other_tab_diff(wininfo_T *wip);
-
-/*
- * Return TRUE when "wip" has 'diff' set and the diff is only for another tab
- * page.  That's because a diff is local to a tab page.
- */
-static int wininfo_other_tab_diff(wininfo_T *wip)
-{
-  win_T       *wp;
-
-  if (wip->wi_opt.wo_diff) {
-    for (wp = firstwin; wp != NULL; wp = wp->w_next)
-      /* return FALSE when it's a window in the current tab page, thus
-       * the buffer was in diff mode here */
-      if (wip->wi_win == wp)
-        return FALSE;
-    return TRUE;
-  }
-  return FALSE;
-}
-
-/*
- * Find info for the current window in buffer "buf".
- * If not found, return the info for the most recently used window.
- * When "skip_diff_buffer" is TRUE avoid windows with 'diff' set that is in
- * another tab page.
- * Returns NULL when there isn't any info.
- */
-static wininfo_T *find_wininfo(buf_T *buf, int skip_diff_buffer)
-{
-  wininfo_T   *wip;
-
-  for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
-    if (wip->wi_win == curwin
-        && (!skip_diff_buffer || !wininfo_other_tab_diff(wip))
-        )
-      break;
-
-  /* If no wininfo for curwin, use the first in the list (that doesn't have
-   * 'diff' set and is in another tab page). */
-  if (wip == NULL) {
-    if (skip_diff_buffer) {
-      for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
-        if (!wininfo_other_tab_diff(wip))
-          break;
-    } else
-      wip = buf->b_wininfo;
-  }
-  return wip;
-}
-
-/*
- * Reset the local window options to the values last used in this window.
- * If the buffer wasn't used in this window before, use the values from
- * the most recently used window.  If the values were never set, use the
- * global values for the window.
- */
-void get_winopts(buf_T *buf)
-{
-  wininfo_T   *wip;
-
-  clear_winopt(&curwin->w_onebuf_opt);
-  clearFolding(curwin);
-
-  wip = find_wininfo(buf, TRUE);
-  if (wip != NULL && wip->wi_optset) {
-    copy_winopt(&wip->wi_opt, &curwin->w_onebuf_opt);
-    curwin->w_fold_manual = wip->wi_fold_manual;
-    curwin->w_foldinvalid = TRUE;
-    cloneFoldGrowArray(&wip->wi_folds, &curwin->w_folds);
-  } else
-    copy_winopt(&curwin->w_allbuf_opt, &curwin->w_onebuf_opt);
-
-  /* Set 'foldlevel' to 'foldlevelstart' if it's not negative. */
-  if (p_fdls >= 0)
-    curwin->w_p_fdl = p_fdls;
-  check_colorcolumn(curwin);
-}
-
-/*
- * Find the position (lnum and col) for the buffer 'buf' for the current
- * window.
- * Returns a pointer to no_position if no position is found.
- */
-pos_T *buflist_findfpos(buf_T *buf)
-{
-  wininfo_T   *wip;
-  static pos_T no_position = INIT_POS_T(1, 0, 0);
-
-  wip = find_wininfo(buf, FALSE);
-  if (wip != NULL)
-    return &(wip->wi_fpos);
-  else
-    return &no_position;
-}
-
-/*
- * Find the lnum for the buffer 'buf' for the current window.
- */
-linenr_T buflist_findlnum(buf_T *buf)
-{
-  return buflist_findfpos(buf)->lnum;
-}
-
-/*
- * List all know file names (for :files and :buffers command).
- */
-void buflist_list(exarg_T *eap)
-{
-  buf_T       *buf;
-  int len;
-  int i;
-
-  for (buf = firstbuf; buf != NULL && !got_int; buf = buf->b_next) {
-    /* skip unlisted buffers, unless ! was used */
-    if (!buf->b_p_bl && !eap->forceit)
-      continue;
-    msg_putchar('\n');
-    if (buf_spname(buf) != NULL)
-      vim_strncpy(NameBuff, buf_spname(buf), MAXPATHL - 1);
-    else
-      home_replace(buf, buf->b_fname, NameBuff, MAXPATHL, TRUE);
-
-    len = vim_snprintf((char *)IObuff, IOSIZE - 20, "%3d%c%c%c%c%c \"%s\"",
-        buf->b_fnum,
-        buf->b_p_bl ? ' ' : 'u',
-        buf == curbuf ? '%' :
-        (curwin->w_alt_fnum == buf->b_fnum ? '#' : ' '),
-        buf->b_ml.ml_mfp == NULL ? ' ' :
-        (buf->b_nwindows == 0 ? 'h' : 'a'),
-        !buf->b_p_ma ? '-' : (buf->b_p_ro ? '=' : ' '),
-        (buf->b_flags & BF_READERR) ? 'x'
-        : (bufIsChanged(buf) ? '+' : ' '),
-        NameBuff);
-
-    /* put "line 999" in column 40 or after the file name */
-    i = 40 - vim_strsize(IObuff);
-    do {
-      IObuff[len++] = ' ';
-    } while (--i > 0 && len < IOSIZE - 18);
-    vim_snprintf((char *)IObuff + len, (size_t)(IOSIZE - len),
-        _("line %" PRId64),
-        buf == curbuf ? (int64_t)curwin->w_cursor.lnum
-                      : (int64_t)buflist_findlnum(buf));
-    msg_outtrans(IObuff);
-    out_flush();            /* output one line at a time */
-    ui_breakcheck();
-  }
-}
-
-/*
- * Get file name and line number for file 'fnum'.
- * Used by DoOneCmd() for translating '%' and '#'.
- * Used by insert_reg() and cmdline_paste() for '#' register.
- * Return FAIL if not found, OK for success.
- */
-int buflist_name_nr(int fnum, char_u **fname, linenr_T *lnum)
-{
-  buf_T       *buf;
-
-  buf = buflist_findnr(fnum);
-  if (buf == NULL || buf->b_fname == NULL)
-    return FAIL;
-
-  *fname = buf->b_fname;
-  *lnum = buflist_findlnum(buf);
-
-  return OK;
-}
-
-/*
- * Set the file name for "buf"' to 'ffname', short file name to 'sfname'.
- * The file name with the full path is also remembered, for when :cd is used.
- * Returns FAIL for failure (file name already in use by other buffer)
- *	OK otherwise.
- */
-int 
-setfname (
-    buf_T *buf,
-    char_u *ffname,
-    char_u *sfname,
-    int message                    /* give message when buffer already exists */
-)
-{
-  buf_T       *obuf = NULL;
-  FileInfo file_info;
-
-  if (ffname == NULL || *ffname == NUL) {
-    /* Removing the name. */
-    free(buf->b_ffname);
-    free(buf->b_sfname);
-    buf->b_ffname = NULL;
-    buf->b_sfname = NULL;
-    file_info.stat.st_dev = INVALID_DEVICE_ID;
-  } else {
-    fname_expand(buf, &ffname, &sfname);     /* will allocate ffname */
-    if (ffname == NULL)                     /* out of memory */
-      return FAIL;
-
-    /*
-     * if the file name is already used in another buffer:
-     * - if the buffer is loaded, fail
-     * - if the buffer is not loaded, delete it from the list
-     */
-    if (!os_get_file_info((char *)ffname, &file_info)) {
-      file_info.stat.st_dev = INVALID_DEVICE_ID;
-    }
-    if (!(buf->b_flags & BF_DUMMY)) {
-      obuf = buflist_findname_file_info(ffname, &file_info);
-    }
-    if (obuf != NULL && obuf != buf) {
-      if (obuf->b_ml.ml_mfp != NULL) {          /* it's loaded, fail */
-        if (message)
-          EMSG(_("E95: Buffer with this name already exists"));
-        free(ffname);
-        return FAIL;
-      }
-      /* delete from the list */
-      close_buffer(NULL, obuf, DOBUF_WIPE, FALSE);
-    }
-    sfname = vim_strsave(sfname);
-    if (ffname == NULL || sfname == NULL) {
-      free(sfname);
-      free(ffname);
-      return FAIL;
-    }
-#ifdef USE_FNAME_CASE
-    fname_case(sfname, 0);            /* set correct case for short file name */
-#endif
-    free(buf->b_ffname);
-    free(buf->b_sfname);
-    buf->b_ffname = ffname;
-    buf->b_sfname = sfname;
-  }
-  buf->b_fname = buf->b_sfname;
-  if (file_info.stat.st_dev == INVALID_DEVICE_ID) {
-    buf->b_dev_valid = FALSE;
-  } else {
-    buf->b_dev_valid = TRUE;
-    buf->b_dev = file_info.stat.st_dev;
-    buf->b_ino = file_info.stat.st_ino;
-  }
-
-  buf_name_changed(buf);
-  return OK;
-}
-
-/*
- * Crude way of changing the name of a buffer.  Use with care!
- * The name should be relative to the current directory.
- */
-void buf_set_name(int fnum, char_u *name)
-{
-  buf_T       *buf;
-
-  buf = buflist_findnr(fnum);
-  if (buf != NULL) {
-    free(buf->b_sfname);
-    free(buf->b_ffname);
-    buf->b_ffname = vim_strsave(name);
-    buf->b_sfname = NULL;
-    /* Allocate ffname and expand into full path.  Also resolves .lnk
-     * files on Win32. */
-    fname_expand(buf, &buf->b_ffname, &buf->b_sfname);
-    buf->b_fname = buf->b_sfname;
-  }
-}
-
-/*
- * Take care of what needs to be done when the name of buffer "buf" has
- * changed.
- */
-void buf_name_changed(buf_T *buf)
-{
-  /*
-   * If the file name changed, also change the name of the swapfile
-   */
-  if (buf->b_ml.ml_mfp != NULL)
-    ml_setname(buf);
-
-  if (curwin->w_buffer == buf)
-    check_arg_idx(curwin);      /* check file name for arg list */
-  maketitle();                  /* set window title */
-  status_redraw_all();          /* status lines need to be redrawn */
-  fmarks_check_names(buf);      /* check named file marks */
-  ml_timestamp(buf);            /* reset timestamp */
-}
-
-/*
- * set alternate file name for current window
- *
- * Used by do_one_cmd(), do_write() and do_ecmd().
- * Return the buffer.
- */
-buf_T *setaltfname(char_u *ffname, char_u *sfname, linenr_T lnum)
-{
-  buf_T       *buf;
-
-  /* Create a buffer.  'buflisted' is not set if it's a new buffer */
-  buf = buflist_new(ffname, sfname, lnum, 0);
-  if (buf != NULL && !cmdmod.keepalt)
-    curwin->w_alt_fnum = buf->b_fnum;
-  return buf;
-}
-
-/*
- * Get alternate file name for current window.
- * Return NULL if there isn't any, and give error message if requested.
- */
-char_u *
-getaltfname (
-    int errmsg                     /* give error message */
-)
-{
-  char_u      *fname;
-  linenr_T dummy;
-
-  if (buflist_name_nr(0, &fname, &dummy) == FAIL) {
-    if (errmsg)
-      EMSG(_(e_noalt));
-    return NULL;
-  }
-  return fname;
-}
-
-/*
- * Add a file name to the buflist and return its number.
- * Uses same flags as buflist_new(), except BLN_DUMMY.
- *
- * used by qf_init(), main() and doarglist()
- */
-int buflist_add(char_u *fname, int flags)
-{
-  buf_T       *buf;
-
-  buf = buflist_new(fname, NULL, (linenr_T)0, flags);
-  if (buf != NULL)
-    return buf->b_fnum;
-  return 0;
-}
-
-#if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
-/*
- * Adjust slashes in file names.  Called after 'shellslash' was set.
- */
-void buflist_slash_adjust(void)
-{
-  buf_T       *bp;
-
-  for (bp = firstbuf; bp != NULL; bp = bp->b_next) {
-    if (bp->b_ffname != NULL)
-      slash_adjust(bp->b_ffname);
-    if (bp->b_sfname != NULL)
-      slash_adjust(bp->b_sfname);
-  }
-}
-
-#endif
-
-/*
- * Set alternate cursor position for the current buffer and window "win".
- * Also save the local window option values.
- */
-void buflist_altfpos(win_T *win)
-{
-  buflist_setfpos(curbuf, win, win->w_cursor.lnum, win->w_cursor.col, TRUE);
-}
-
-/*
- * Return TRUE if 'ffname' is not the same file as current file.
- * Fname must have a full path (expanded by path_get_absolute_path()).
- */
-int otherfile(char_u *ffname)
-{
-  return otherfile_buf(curbuf, ffname, NULL);
-}
-
-static int otherfile_buf(buf_T *buf, char_u *ffname, FileInfo *file_info_p)
-{
-  /* no name is different */
-  if (ffname == NULL || *ffname == NUL || buf->b_ffname == NULL) {
-    return TRUE;
-  }
-  if (fnamecmp(ffname, buf->b_ffname) == 0) {
-    return FALSE;
-  }
-  {
-    FileInfo file_info;
-
-    /* If no struct stat given, get it now */
-    if (file_info_p == NULL) {
-      if (!buf->b_dev_valid || !os_get_file_info((char *)ffname, &file_info)) {
-        file_info.stat.st_dev = INVALID_DEVICE_ID;
-      }
-      file_info_p = &file_info;
-    }
-    /* Use dev/ino to check if the files are the same, even when the names
-     * are different (possible with links).  Still need to compare the
-     * name above, for when the file doesn't exist yet.
-     * Problem: The dev/ino changes when a file is deleted (and created
-     * again) and remains the same when renamed/moved.  We don't want to
-     * stat() each buffer each time, that would be too slow.  Get the
-     * dev/ino again when they appear to match, but not when they appear
-     * to be different: Could skip a buffer when it's actually the same
-     * file. */
-    if (buf_same_ino(buf, file_info_p)) {
-      buf_setino(buf);
-      if (buf_same_ino(buf, file_info_p))
-        return FALSE;
-    }
-  }
-  return TRUE;
-}
-
-/*
- * Set inode and device number for a buffer.
- * Must always be called when b_fname is changed!.
- */
-void buf_setino(buf_T *buf)
-{
-  FileInfo file_info;
-  if (buf->b_fname != NULL
-      && os_get_file_info((char *)buf->b_fname, &file_info)) {
-    buf->b_dev_valid = TRUE;
-    buf->b_dev = file_info.stat.st_dev;
-    buf->b_ino = file_info.stat.st_ino;
-  } else {
-    buf->b_dev_valid = FALSE;
-  }
-}
-
-/*
- * Return TRUE if dev/ino in buffer "buf" matches with "stp".
- */
-static int buf_same_ino(buf_T *buf, FileInfo *file_info)
-{
-  return buf->b_dev_valid
-         && file_info->stat.st_dev == buf->b_dev
-         && file_info->stat.st_ino == buf->b_ino;
-}
-
-/*
- * Print info about the current buffer.
- */
-void 
-fileinfo (
-    int fullname,               /* when non-zero print full path */
-    int shorthelp,
-    int dont_truncate
-)
-{
-  char_u      *name;
-  int n;
-  char_u      *p;
-  char_u      *buffer;
-  size_t len;
-
-  buffer = xmalloc(IOSIZE);
-
-  if (fullname > 1) {       /* 2 CTRL-G: include buffer number */
-    vim_snprintf((char *)buffer, IOSIZE, "buf %d: ", curbuf->b_fnum);
-    p = buffer + STRLEN(buffer);
-  } else
-    p = buffer;
-
-  *p++ = '"';
-  if (buf_spname(curbuf) != NULL)
-    vim_strncpy(p, buf_spname(curbuf), IOSIZE - (p - buffer) - 1);
-  else {
-    if (!fullname && curbuf->b_fname != NULL)
-      name = curbuf->b_fname;
-    else
-      name = curbuf->b_ffname;
-    home_replace(shorthelp ? curbuf : NULL, name, p,
-        (int)(IOSIZE - (p - buffer)), TRUE);
-  }
-
-  vim_snprintf_add((char *)buffer, IOSIZE, "\"%s%s%s%s%s%s",
-      curbufIsChanged() ? (shortmess(SHM_MOD)
-                           ?  " [+]" : _(" [Modified]")) : " ",
-      (curbuf->b_flags & BF_NOTEDITED)
-      && !bt_dontwrite(curbuf)
-      ? _("[Not edited]") : "",
-      (curbuf->b_flags & BF_NEW)
-      && !bt_dontwrite(curbuf)
-      ? _("[New file]") : "",
-      (curbuf->b_flags & BF_READERR) ? _("[Read errors]") : "",
-      curbuf->b_p_ro ? (shortmess(SHM_RO) ? _("[RO]")
-                        : _("[readonly]")) : "",
-      (curbufIsChanged() || (curbuf->b_flags & BF_WRITE_MASK)
-       || curbuf->b_p_ro) ?
-      " " : "");
-  /* With 32 bit longs and more than 21,474,836 lines multiplying by 100
-   * causes an overflow, thus for large numbers divide instead. */
-  if (curwin->w_cursor.lnum > 1000000L)
-    n = (int)(((long)curwin->w_cursor.lnum) /
-              ((long)curbuf->b_ml.ml_line_count / 100L));
-  else
-    n = (int)(((long)curwin->w_cursor.lnum * 100L) /
-              (long)curbuf->b_ml.ml_line_count);
-  if (curbuf->b_ml.ml_flags & ML_EMPTY) {
-    vim_snprintf_add((char *)buffer, IOSIZE, "%s", _(no_lines_msg));
-  } else if (p_ru) {
-    /* Current line and column are already on the screen -- webb */
-    if (curbuf->b_ml.ml_line_count == 1)
-      vim_snprintf_add((char *)buffer, IOSIZE, _("1 line --%d%%--"), n);
-    else
-      vim_snprintf_add((char *)buffer, IOSIZE, _("%" PRId64 " lines --%d%%--"),
-          (int64_t)curbuf->b_ml.ml_line_count, n);
-  } else {
-    vim_snprintf_add((char *)buffer, IOSIZE,
-        _("line %" PRId64 " of %" PRId64 " --%d%%-- col "),
-        (int64_t)curwin->w_cursor.lnum,
-        (int64_t)curbuf->b_ml.ml_line_count,
-        n);
-    validate_virtcol();
-    len = STRLEN(buffer);
-    col_print(buffer + len, IOSIZE - len,
-        (int)curwin->w_cursor.col + 1, (int)curwin->w_virtcol + 1);
-  }
-
-  (void)append_arg_number(curwin, buffer, IOSIZE, !shortmess(SHM_FILE));
-
-  if (dont_truncate) {
-    /* Temporarily set msg_scroll to avoid the message being truncated.
-     * First call msg_start() to get the message in the right place. */
-    msg_start();
-    n = msg_scroll;
-    msg_scroll = TRUE;
-    msg(buffer);
-    msg_scroll = n;
-  } else {
-    p = msg_trunc_attr(buffer, FALSE, 0);
-    if (restart_edit != 0 || (msg_scrolled && !need_wait_return))
-      /* Need to repeat the message after redrawing when:
-       * - When restart_edit is set (otherwise there will be a delay
-       *   before redrawing).
-       * - When the screen was scrolled but there is no wait-return
-       *   prompt. */
-      set_keep_msg(p, 0);
-  }
-
-  free(buffer);
-}
-
-void col_print(char_u *buf, size_t buflen, int col, int vcol)
-{
-  if (col == vcol)
-    vim_snprintf((char *)buf, buflen, "%d", col);
-  else
-    vim_snprintf((char *)buf, buflen, "%d-%d", col, vcol);
-}
-
-/*
- * put file name in title bar of window and in icon title
- */
-
-static char_u *lasttitle = NULL;
-static char_u *lasticon = NULL;
-
-void maketitle(void)
-{
-  char_u      *p;
-  char_u      *t_str = NULL;
-  char_u      *i_name;
-  char_u      *i_str = NULL;
-  int maxlen = 0;
-  int len;
-  int mustset;
-  char_u buf[IOSIZE];
-  int off;
-
-  if (!redrawing()) {
-    /* Postpone updating the title when 'lazyredraw' is set. */
-    need_maketitle = TRUE;
-    return;
-  }
-
-  need_maketitle = FALSE;
-  if (!p_title && !p_icon && lasttitle == NULL && lasticon == NULL)
-    return;
-
-  if (p_title) {
-    if (p_titlelen > 0) {
-      maxlen = p_titlelen * Columns / 100;
-      if (maxlen < 10)
-        maxlen = 10;
-    }
-
-    t_str = buf;
-    if (*p_titlestring != NUL) {
-      if (stl_syntax & STL_IN_TITLE) {
-        int use_sandbox = FALSE;
-        int save_called_emsg = called_emsg;
-
-        use_sandbox = was_set_insecurely((char_u *)"titlestring", 0);
-        called_emsg = FALSE;
-        build_stl_str_hl(curwin, t_str, sizeof(buf),
-            p_titlestring, use_sandbox,
-            0, maxlen, NULL, NULL);
-        if (called_emsg)
-          set_string_option_direct((char_u *)"titlestring", -1,
-              (char_u *)"", OPT_FREE, SID_ERROR);
-        called_emsg |= save_called_emsg;
-      } else
-        t_str = p_titlestring;
-    } else {
-      /* format: "fname + (path) (1 of 2) - VIM" */
-
-#define SPACE_FOR_FNAME (IOSIZE - 100)
-#define SPACE_FOR_DIR   (IOSIZE - 20)
-#define SPACE_FOR_ARGNR (IOSIZE - 10)  /* at least room for " - VIM" */
-      if (curbuf->b_fname == NULL)
-        vim_strncpy(buf, (char_u *)_("[No Name]"), SPACE_FOR_FNAME);
-      else {
-        p = transstr(path_tail(curbuf->b_fname));
-        vim_strncpy(buf, p, SPACE_FOR_FNAME);
-        free(p);
-      }
-
-      switch (bufIsChanged(curbuf)
-              + (curbuf->b_p_ro * 2)
-              + (!curbuf->b_p_ma * 4)) {
-      case 1: STRCAT(buf, " +"); break;
-      case 2: STRCAT(buf, " ="); break;
-      case 3: STRCAT(buf, " =+"); break;
-      case 4:
-      case 6: STRCAT(buf, " -"); break;
-      case 5:
-      case 7: STRCAT(buf, " -+"); break;
-      }
-
-      if (curbuf->b_fname != NULL) {
-        /* Get path of file, replace home dir with ~ */
-        off = (int)STRLEN(buf);
-        buf[off++] = ' ';
-        buf[off++] = '(';
-        home_replace(curbuf, curbuf->b_ffname,
-            buf + off, SPACE_FOR_DIR - off, TRUE);
-#ifdef BACKSLASH_IN_FILENAME
-        /* avoid "c:/name" to be reduced to "c" */
-        if (isalpha(buf[off]) && buf[off + 1] == ':')
-          off += 2;
-#endif
-        /* remove the file name */
-        p = path_tail_with_sep(buf + off);
-        if (p == buf + off)
-          /* must be a help buffer */
-          vim_strncpy(buf + off, (char_u *)_("help"),
-              (size_t)(SPACE_FOR_DIR - off - 1));
-        else
-          *p = NUL;
-
-        /* Translate unprintable chars and concatenate.  Keep some
-         * room for the server name.  When there is no room (very long
-         * file name) use (...). */
-        if (off < SPACE_FOR_DIR) {
-          p = transstr(buf + off);
-          vim_strncpy(buf + off, p, (size_t)(SPACE_FOR_DIR - off));
-          free(p);
-        } else {
-          vim_strncpy(buf + off, (char_u *)"...",
-              (size_t)(SPACE_FOR_ARGNR - off));
-        }
-        STRCAT(buf, ")");
-      }
-
-      append_arg_number(curwin, buf, SPACE_FOR_ARGNR, FALSE);
-
-      STRCAT(buf, " - VIM");
-
-      if (maxlen > 0) {
-        /* make it shorter by removing a bit in the middle */
-        if (vim_strsize(buf) > maxlen)
-          trunc_string(buf, buf, maxlen, IOSIZE);
-      }
-    }
-  }
-  mustset = ti_change(t_str, &lasttitle);
-
-  if (p_icon) {
-    i_str = buf;
-    if (*p_iconstring != NUL) {
-      if (stl_syntax & STL_IN_ICON) {
-        int use_sandbox = FALSE;
-        int save_called_emsg = called_emsg;
-
-        use_sandbox = was_set_insecurely((char_u *)"iconstring", 0);
-        called_emsg = FALSE;
-        build_stl_str_hl(curwin, i_str, sizeof(buf),
-            p_iconstring, use_sandbox,
-            0, 0, NULL, NULL);
-        if (called_emsg)
-          set_string_option_direct((char_u *)"iconstring", -1,
-              (char_u *)"", OPT_FREE, SID_ERROR);
-        called_emsg |= save_called_emsg;
-      } else
-        i_str = p_iconstring;
-    } else {
-      if (buf_spname(curbuf) != NULL)
-        i_name = buf_spname(curbuf);
-      else                          /* use file name only in icon */
-        i_name = path_tail(curbuf->b_ffname);
-      *i_str = NUL;
-      /* Truncate name at 100 bytes. */
-      len = (int)STRLEN(i_name);
-      if (len > 100) {
-        len -= 100;
-        if (has_mbyte)
-          len += (*mb_tail_off)(i_name, i_name + len) + 1;
-        i_name += len;
-      }
-      STRCPY(i_str, i_name);
-      trans_characters(i_str, IOSIZE);
-    }
-  }
-
-  mustset |= ti_change(i_str, &lasticon);
-
-  if (mustset)
-    resettitle();
-}
-
-/*
- * Used for title and icon: Check if "str" differs from "*last".  Set "*last"
- * from "str" if it does.
- * Return TRUE when "*last" changed.
- */
-static int ti_change(char_u *str, char_u **last)
-{
-  if ((str == NULL) != (*last == NULL)
-      || (str != NULL && *last != NULL && STRCMP(str, *last) != 0)) {
-    free(*last);
-    if (str == NULL)
-      *last = NULL;
-    else
-      *last = vim_strsave(str);
-    return TRUE;
-  }
-  return FALSE;
-}
-
-/*
- * Put current window title back (used after calling a shell)
- */
-void resettitle(void)
-{
-  mch_settitle(lasttitle, lasticon);
-}
-
-# if defined(EXITFREE) || defined(PROTO)
-void free_titles(void)
-{
-  free(lasttitle);
-  free(lasticon);
-}
-
-# endif
-
-
-/*
- * Build a string from the status line items in "fmt".
- * Return length of string in screen cells.
- *
- * Normally works for window "wp", except when working for 'tabline' then it
- * is "curwin".
- *
- * Items are drawn interspersed with the text that surrounds it
- * Specials: %-<wid>(xxx%) => group, %= => middle marker, %< => truncation
- * Item: %-<minwid>.<maxwid><itemch> All but <itemch> are optional
- *
- * If maxwidth is not zero, the string will be filled at any middle marker
- * or truncated if too long, fillchar is used for all whitespace.
- */
-int 
-build_stl_str_hl (
-    win_T *wp,
-    char_u *out,               /* buffer to write into != NameBuff */
-    size_t outlen,                  /* length of out[] */
-    char_u *fmt,
-    int use_sandbox,             /* "fmt" was set insecurely, use sandbox */
-    int fillchar,
-    int maxwidth,
-    struct stl_hlrec *hltab,        /* return: HL attributes (can be NULL) */
-    struct stl_hlrec *tabtab       /* return: tab page nrs (can be NULL) */
-)
-{
-  char_u      *p;
-  char_u      *s;
-  char_u      *t;
-  int byteval;
-  win_T       *o_curwin;
-  buf_T       *o_curbuf;
-  int empty_line;
-  colnr_T virtcol;
-  long l;
-  long n;
-  int prevchar_isflag;
-  int prevchar_isitem;
-  int itemisflag;
-  int fillable;
-  char_u      *str;
-  long num;
-  int width;
-  int itemcnt;
-  int curitem;
-  int groupitem[STL_MAX_ITEM];
-  int groupdepth;
-  struct stl_item {
-    char_u          *start;
-    int minwid;
-    int maxwid;
-    enum {
-      Normal,
-      Empty,
-      Group,
-      Middle,
-      Highlight,
-      TabPage,
-      Trunc
-    }               type;
-  }           item[STL_MAX_ITEM];
-  int minwid;
-  int maxwid;
-  int zeropad;
-  char_u base;
-  char_u opt;
-#define TMPLEN 70
-  char_u tmp[TMPLEN];
-  char_u      *usefmt = fmt;
-  struct stl_hlrec *sp;
-
-  /*
-   * When the format starts with "%!" then evaluate it as an expression and
-   * use the result as the actual format string.
-   */
-  if (fmt[0] == '%' && fmt[1] == '!') {
-    usefmt = eval_to_string_safe(fmt + 2, NULL, use_sandbox);
-    if (usefmt == NULL)
-      usefmt = fmt;
-  }
-
-  if (fillchar == 0)
-    fillchar = ' ';
-  /* Can't handle a multi-byte fill character yet. */
-  else if (mb_char2len(fillchar) > 1)
-    fillchar = '-';
-
-  /* Get line & check if empty (cursorpos will show "0-1").  Note that
-   * p will become invalid when getting another buffer line. */
-  p = ml_get_buf(wp->w_buffer, wp->w_cursor.lnum, FALSE);
-  empty_line = (*p == NUL);
-
-  /* Get the byte value now, in case we need it below. This is more
-   * efficient than making a copy of the line. */
-  if (wp->w_cursor.col > (colnr_T)STRLEN(p))
-    byteval = 0;
-  else
-    byteval = (*mb_ptr2char)(p + wp->w_cursor.col);
-
-  groupdepth = 0;
-  p = out;
-  curitem = 0;
-  prevchar_isflag = TRUE;
-  prevchar_isitem = FALSE;
-  for (s = usefmt; *s; ) {
-    if (curitem == STL_MAX_ITEM) {
-      /* There are too many items.  Add the error code to the statusline
-       * to give the user a hint about what went wrong. */
-      if (p + 6 < out + outlen) {
-        memmove(p, " E541", (size_t)5);
-        p += 5;
-      }
-      break;
-    }
-
-    if (*s != NUL && *s != '%')
-      prevchar_isflag = prevchar_isitem = FALSE;
-
-    /*
-     * Handle up to the next '%' or the end.
-     */
-    while (*s != NUL && *s != '%' && p + 1 < out + outlen)
-      *p++ = *s++;
-    if (*s == NUL || p + 1 >= out + outlen)
-      break;
-
-    /*
-     * Handle one '%' item.
-     */
-    s++;
-    if (*s == NUL)      /* ignore trailing % */
-      break;
-    if (*s == '%') {
-      if (p + 1 >= out + outlen)
-        break;
-      *p++ = *s++;
-      prevchar_isflag = prevchar_isitem = FALSE;
-      continue;
-    }
-    if (*s == STL_MIDDLEMARK) {
-      s++;
-      if (groupdepth > 0)
-        continue;
-      item[curitem].type = Middle;
-      item[curitem++].start = p;
-      continue;
-    }
-    if (*s == STL_TRUNCMARK) {
-      s++;
-      item[curitem].type = Trunc;
-      item[curitem++].start = p;
-      continue;
-    }
-    if (*s == ')') {
-      s++;
-      if (groupdepth < 1)
-        continue;
-      groupdepth--;
-
-      t = item[groupitem[groupdepth]].start;
-      *p = NUL;
-      l = vim_strsize(t);
-      if (curitem > groupitem[groupdepth] + 1
-          && item[groupitem[groupdepth]].minwid == 0) {
-        /* remove group if all items are empty */
-        for (n = groupitem[groupdepth] + 1; n < curitem; n++)
-          if (item[n].type == Normal)
-            break;
-        if (n == curitem) {
-          p = t;
-          l = 0;
-        }
-      }
-      if (l > item[groupitem[groupdepth]].maxwid) {
-        /* truncate, remove n bytes of text at the start */
-        if (has_mbyte) {
-          /* Find the first character that should be included. */
-          n = 0;
-          while (l >= item[groupitem[groupdepth]].maxwid) {
-            l -= ptr2cells(t + n);
-            n += (*mb_ptr2len)(t + n);
-          }
-        } else
-          n = (long)(p - t) - item[groupitem[groupdepth]].maxwid + 1;
-
-        *t = '<';
-        memmove(t + 1, t + n, (size_t)(p - (t + n)));
-        p = p - n + 1;
-        /* Fill up space left over by half a double-wide char. */
-        while (++l < item[groupitem[groupdepth]].minwid)
-          *p++ = fillchar;
-
-        /* correct the start of the items for the truncation */
-        for (l = groupitem[groupdepth] + 1; l < curitem; l++) {
-          item[l].start -= n;
-          if (item[l].start < t)
-            item[l].start = t;
-        }
-      } else if (abs(item[groupitem[groupdepth]].minwid) > l) {
-        /* fill */
-        n = item[groupitem[groupdepth]].minwid;
-        if (n < 0) {
-          /* fill by appending characters */
-          n = 0 - n;
-          while (l++ < n && p + 1 < out + outlen)
-            *p++ = fillchar;
-        } else {
-          /* fill by inserting characters */
-          memmove(t + n - l, t, (size_t)(p - t));
-          l = n - l;
-          if (p + l >= out + outlen)
-            l = (long)((out + outlen) - p - 1);
-          p += l;
-          for (n = groupitem[groupdepth] + 1; n < curitem; n++)
-            item[n].start += l;
-          for (; l > 0; l--)
-            *t++ = fillchar;
-        }
-      }
-      continue;
-    }
-    minwid = 0;
-    maxwid = 9999;
-    zeropad = FALSE;
-    l = 1;
-    if (*s == '0') {
-      s++;
-      zeropad = TRUE;
-    }
-    if (*s == '-') {
-      s++;
-      l = -1;
-    }
-    if (VIM_ISDIGIT(*s)) {
-      minwid = (int)getdigits(&s);
-      if (minwid < 0)           /* overflow */
-        minwid = 0;
-    }
-    if (*s == STL_USER_HL) {
-      item[curitem].type = Highlight;
-      item[curitem].start = p;
-      item[curitem].minwid = minwid > 9 ? 1 : minwid;
-      s++;
-      curitem++;
-      continue;
-    }
-    if (*s == STL_TABPAGENR || *s == STL_TABCLOSENR) {
-      if (*s == STL_TABCLOSENR) {
-        if (minwid == 0) {
-          /* %X ends the close label, go back to the previously
-           * define tab label nr. */
-          for (n = curitem - 1; n >= 0; --n)
-            if (item[n].type == TabPage && item[n].minwid >= 0) {
-              minwid = item[n].minwid;
-              break;
-            }
-        } else
-          /* close nrs are stored as negative values */
-          minwid = -minwid;
-      }
-      item[curitem].type = TabPage;
-      item[curitem].start = p;
-      item[curitem].minwid = minwid;
-      s++;
-      curitem++;
-      continue;
-    }
-    if (*s == '.') {
-      s++;
-      if (VIM_ISDIGIT(*s)) {
-        maxwid = (int)getdigits(&s);
-        if (maxwid <= 0)                /* overflow */
-          maxwid = 50;
-      }
-    }
-    minwid = (minwid > 50 ? 50 : minwid) * l;
-    if (*s == '(') {
-      groupitem[groupdepth++] = curitem;
-      item[curitem].type = Group;
-      item[curitem].start = p;
-      item[curitem].minwid = minwid;
-      item[curitem].maxwid = maxwid;
-      s++;
-      curitem++;
-      continue;
-    }
-    if (vim_strchr(STL_ALL, *s) == NULL) {
-      s++;
-      continue;
-    }
-    opt = *s++;
-
-    /* OK - now for the real work */
-    base = 'D';
-    itemisflag = FALSE;
-    fillable = TRUE;
-    num = -1;
-    str = NULL;
-    switch (opt) {
-    case STL_FILEPATH:
-    case STL_FULLPATH:
-    case STL_FILENAME:
-      fillable = FALSE;         /* don't change ' ' to fillchar */
-      if (buf_spname(wp->w_buffer) != NULL)
-        vim_strncpy(NameBuff, buf_spname(wp->w_buffer), MAXPATHL - 1);
-      else {
-        t = (opt == STL_FULLPATH) ? wp->w_buffer->b_ffname
-            : wp->w_buffer->b_fname;
-        home_replace(wp->w_buffer, t, NameBuff, MAXPATHL, TRUE);
-      }
-      trans_characters(NameBuff, MAXPATHL);
-      if (opt != STL_FILENAME)
-        str = NameBuff;
-      else
-        str = path_tail(NameBuff);
-      break;
-
-    case STL_VIM_EXPR:     /* '{' */
-      itemisflag = TRUE;
-      t = p;
-      while (*s != '}' && *s != NUL && p + 1 < out + outlen)
-        *p++ = *s++;
-      if (*s != '}')            /* missing '}' or out of space */
-        break;
-      s++;
-      *p = 0;
-      p = t;
-
-      vim_snprintf((char *)tmp, sizeof(tmp), "%d", curbuf->b_fnum);
-      set_internal_string_var((char_u *)"actual_curbuf", tmp);
-
-      o_curbuf = curbuf;
-      o_curwin = curwin;
-      curwin = wp;
-      curbuf = wp->w_buffer;
-
-      str = eval_to_string_safe(p, &t, use_sandbox);
-
-      curwin = o_curwin;
-      curbuf = o_curbuf;
-      do_unlet((char_u *)"g:actual_curbuf", TRUE);
-
-      if (str != NULL && *str != 0) {
-        if (*skipdigits(str) == NUL) {
-          num = atoi((char *)str);
-          free(str);
-          str = NULL;
-          itemisflag = FALSE;
-        }
-      }
-      break;
-
-    case STL_LINE:
-      num = (wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
-            ? 0L : (long)(wp->w_cursor.lnum);
-      break;
-
-    case STL_NUMLINES:
-      num = wp->w_buffer->b_ml.ml_line_count;
-      break;
-
-    case STL_COLUMN:
-      num = !(State & INSERT) && empty_line
-            ? 0 : (int)wp->w_cursor.col + 1;
-      break;
-
-    case STL_VIRTCOL:
-    case STL_VIRTCOL_ALT:
-      /* In list mode virtcol needs to be recomputed */
-      virtcol = wp->w_virtcol;
-      if (wp->w_p_list && lcs_tab1 == NUL) {
-        wp->w_p_list = FALSE;
-        getvcol(wp, &wp->w_cursor, NULL, &virtcol, NULL);
-        wp->w_p_list = TRUE;
-      }
-      ++virtcol;
-      /* Don't display %V if it's the same as %c. */
-      if (opt == STL_VIRTCOL_ALT
-          && (virtcol == (colnr_T)(!(State & INSERT) && empty_line
-                                   ? 0 : (int)wp->w_cursor.col + 1)))
-        break;
-      num = (long)virtcol;
-      break;
-
-    case STL_PERCENTAGE:
-      num = (int)(((long)wp->w_cursor.lnum * 100L) /
-                  (long)wp->w_buffer->b_ml.ml_line_count);
-      break;
-
-    case STL_ALTPERCENT:
-      str = tmp;
-      get_rel_pos(wp, str, TMPLEN);
-      break;
-
-    case STL_ARGLISTSTAT:
-      fillable = FALSE;
-      tmp[0] = 0;
-      if (append_arg_number(wp, tmp, (int)sizeof(tmp), FALSE))
-        str = tmp;
-      break;
-
-    case STL_KEYMAP:
-      fillable = FALSE;
-      if (get_keymap_str(wp, tmp, TMPLEN))
-        str = tmp;
-      break;
-    case STL_PAGENUM:
-      num = printer_page_num;
-      break;
-
-    case STL_BUFNO:
-      num = wp->w_buffer->b_fnum;
-      break;
-
-    case STL_OFFSET_X:
-      base = 'X';
-    case STL_OFFSET:
-      l = ml_find_line_or_offset(wp->w_buffer, wp->w_cursor.lnum, NULL);
-      num = (wp->w_buffer->b_ml.ml_flags & ML_EMPTY) || l < 0 ?
-            0L : l + 1 + (!(State & INSERT) && empty_line ?
-                          0 : (int)wp->w_cursor.col);
-      break;
-
-    case STL_BYTEVAL_X:
-      base = 'X';
-    case STL_BYTEVAL:
-      num = byteval;
-      if (num == NL)
-        num = 0;
-      else if (num == CAR && get_fileformat(wp->w_buffer) == EOL_MAC)
-        num = NL;
-      break;
-
-    case STL_ROFLAG:
-    case STL_ROFLAG_ALT:
-      itemisflag = TRUE;
-      if (wp->w_buffer->b_p_ro)
-        str = (char_u *)((opt == STL_ROFLAG_ALT) ? ",RO" : _("[RO]"));
-      break;
-
-    case STL_HELPFLAG:
-    case STL_HELPFLAG_ALT:
-      itemisflag = TRUE;
-      if (wp->w_buffer->b_help)
-        str = (char_u *)((opt == STL_HELPFLAG_ALT) ? ",HLP"
-                         : _("[Help]"));
-      break;
-
-    case STL_FILETYPE:
-      if (*wp->w_buffer->b_p_ft != NUL
-          && STRLEN(wp->w_buffer->b_p_ft) < TMPLEN - 3) {
-        vim_snprintf((char *)tmp, sizeof(tmp), "[%s]",
-            wp->w_buffer->b_p_ft);
-        str = tmp;
-      }
-      break;
-
-    case STL_FILETYPE_ALT:
-      itemisflag = TRUE;
-      if (*wp->w_buffer->b_p_ft != NUL
-          && STRLEN(wp->w_buffer->b_p_ft) < TMPLEN - 2) {
-        vim_snprintf((char *)tmp, sizeof(tmp), ",%s",
-            wp->w_buffer->b_p_ft);
-        for (t = tmp; *t != 0; t++)
-          *t = TOUPPER_LOC(*t);
-        str = tmp;
-      }
-      break;
-
-    case STL_PREVIEWFLAG:
-    case STL_PREVIEWFLAG_ALT:
-      itemisflag = TRUE;
-      if (wp->w_p_pvw)
-        str = (char_u *)((opt == STL_PREVIEWFLAG_ALT) ? ",PRV"
-                         : _("[Preview]"));
-      break;
-
-    case STL_QUICKFIX:
-      if (bt_quickfix(wp->w_buffer))
-        str = (char_u *)(wp->w_llist_ref
-                         ? _(msg_loclist)
-                         : _(msg_qflist));
-      break;
-
-    case STL_MODIFIED:
-    case STL_MODIFIED_ALT:
-      itemisflag = TRUE;
-      switch ((opt == STL_MODIFIED_ALT)
-              + bufIsChanged(wp->w_buffer) * 2
-              + (!wp->w_buffer->b_p_ma) * 4) {
-      case 2: str = (char_u *)"[+]"; break;
-      case 3: str = (char_u *)",+"; break;
-      case 4: str = (char_u *)"[-]"; break;
-      case 5: str = (char_u *)",-"; break;
-      case 6: str = (char_u *)"[+-]"; break;
-      case 7: str = (char_u *)",+-"; break;
-      }
-      break;
-
-    case STL_HIGHLIGHT:
-      t = s;
-      while (*s != '#' && *s != NUL)
-        ++s;
-      if (*s == '#') {
-        item[curitem].type = Highlight;
-        item[curitem].start = p;
-        item[curitem].minwid = -syn_namen2id(t, (int)(s - t));
-        curitem++;
-      }
-      if (*s != NUL)
-        ++s;
-      continue;
-    }
-
-    item[curitem].start = p;
-    item[curitem].type = Normal;
-    if (str != NULL && *str) {
-      t = str;
-      if (itemisflag) {
-        if ((t[0] && t[1])
-            && ((!prevchar_isitem && *t == ',')
-                || (prevchar_isflag && *t == ' ')))
-          t++;
-        prevchar_isflag = TRUE;
-      }
-      l = vim_strsize(t);
-      if (l > 0)
-        prevchar_isitem = TRUE;
-      if (l > maxwid) {
-        while (l >= maxwid)
-          if (has_mbyte) {
-            l -= ptr2cells(t);
-            t += (*mb_ptr2len)(t);
-          } else
-            l -= byte2cells(*t++);
-        if (p + 1 >= out + outlen)
-          break;
-        *p++ = '<';
-      }
-      if (minwid > 0) {
-        for (; l < minwid && p + 1 < out + outlen; l++) {
-          /* Don't put a "-" in front of a digit. */
-          if (l + 1 == minwid && fillchar == '-' && VIM_ISDIGIT(*t))
-            *p++ = ' ';
-          else
-            *p++ = fillchar;
-        }
-        minwid = 0;
-      } else
-        minwid *= -1;
-      while (*t && p + 1 < out + outlen) {
-        *p++ = *t++;
-        /* Change a space by fillchar, unless fillchar is '-' and a
-         * digit follows. */
-        if (fillable && p[-1] == ' '
-            && (!VIM_ISDIGIT(*t) || fillchar != '-'))
-          p[-1] = fillchar;
-      }
-      for (; l < minwid && p + 1 < out + outlen; l++)
-        *p++ = fillchar;
-    } else if (num >= 0) {
-      int nbase = (base == 'D' ? 10 : (base == 'O' ? 8 : 16));
-      char_u nstr[20];
-
-      if (p + 20 >= out + outlen)
-        break;                  /* not sufficient space */
-      prevchar_isitem = TRUE;
-      t = nstr;
-      if (opt == STL_VIRTCOL_ALT) {
-        *t++ = '-';
-        minwid--;
-      }
-      *t++ = '%';
-      if (zeropad)
-        *t++ = '0';
-      *t++ = '*';
-      *t++ = nbase == 16 ? base : (char_u)(nbase == 8 ? 'o' : 'd');
-      *t = 0;
-
-      for (n = num, l = 1; n >= nbase; n /= nbase)
-        l++;
-      if (opt == STL_VIRTCOL_ALT)
-        l++;
-      if (l > maxwid) {
-        l += 2;
-        n = l - maxwid;
-        while (l-- > maxwid)
-          num /= nbase;
-        *t++ = '>';
-        *t++ = '%';
-        *t = t[-3];
-        *++t = 0;
-        vim_snprintf((char *)p, outlen - (p - out), (char *)nstr,
-            0, num, n);
-      } else
-        vim_snprintf((char *)p, outlen - (p - out), (char *)nstr,
-            minwid, num);
-      p += STRLEN(p);
-    } else
-      item[curitem].type = Empty;
-
-    if (opt == STL_VIM_EXPR)
-      free(str);
-
-    if (num >= 0 || (!itemisflag && str && *str))
-      prevchar_isflag = FALSE;              /* Item not NULL, but not a flag */
-    curitem++;
-  }
-  *p = NUL;
-  itemcnt = curitem;
-
-  if (usefmt != fmt)
-    free(usefmt);
-
-  width = vim_strsize(out);
-  if (maxwidth > 0 && width > maxwidth) {
-    /* Result is too long, must truncate somewhere. */
-    l = 0;
-    if (itemcnt == 0)
-      s = out;
-    else {
-      for (; l < itemcnt; l++)
-        if (item[l].type == Trunc) {
-          /* Truncate at %< item. */
-          s = item[l].start;
-          break;
-        }
-      if (l == itemcnt) {
-        /* No %< item, truncate first item. */
-        s = item[0].start;
-        l = 0;
-      }
-    }
-
-    if (width - vim_strsize(s) >= maxwidth) {
-      /* Truncation mark is beyond max length */
-      if (has_mbyte) {
-        s = out;
-        width = 0;
-        for (;; ) {
-          width += ptr2cells(s);
-          if (width >= maxwidth)
-            break;
-          s += (*mb_ptr2len)(s);
-        }
-        /* Fill up for half a double-wide character. */
-        while (++width < maxwidth)
-          *s++ = fillchar;
-      } else
-        s = out + maxwidth - 1;
-      for (l = 0; l < itemcnt; l++)
-        if (item[l].start > s)
-          break;
-      itemcnt = l;
-      *s++ = '>';
-      *s = 0;
-    } else {
-      if (has_mbyte) {
-        n = 0;
-        while (width >= maxwidth) {
-          width -= ptr2cells(s + n);
-          n += (*mb_ptr2len)(s + n);
-        }
-      } else
-        n = width - maxwidth + 1;
-      p = s + n;
-      STRMOVE(s + 1, p);
-      *s = '<';
-
-      /* Fill up for half a double-wide character. */
-      while (++width < maxwidth) {
-        s = s + STRLEN(s);
-        *s++ = fillchar;
-        *s = NUL;
-      }
-
-      --n;              /* count the '<' */
-      for (; l < itemcnt; l++) {
-        if (item[l].start - n >= s)
-          item[l].start -= n;
-        else
-          item[l].start = s;
-      }
-    }
-    width = maxwidth;
-  } else if (width < maxwidth && STRLEN(out) + maxwidth - width + 1 <
-             outlen) {
-    /* Apply STL_MIDDLE if any */
-    for (l = 0; l < itemcnt; l++)
-      if (item[l].type == Middle)
-        break;
-    if (l < itemcnt) {
-      p = item[l].start + maxwidth - width;
-      STRMOVE(p, item[l].start);
-      for (s = item[l].start; s < p; s++)
-        *s = fillchar;
-      for (l++; l < itemcnt; l++)
-        item[l].start += maxwidth - width;
-      width = maxwidth;
-    }
-  }
-
-  /* Store the info about highlighting. */
-  if (hltab != NULL) {
-    sp = hltab;
-    for (l = 0; l < itemcnt; l++) {
-      if (item[l].type == Highlight) {
-        sp->start = item[l].start;
-        sp->userhl = item[l].minwid;
-        sp++;
-      }
-    }
-    sp->start = NULL;
-    sp->userhl = 0;
-  }
-
-  /* Store the info about tab pages labels. */
-  if (tabtab != NULL) {
-    sp = tabtab;
-    for (l = 0; l < itemcnt; l++) {
-      if (item[l].type == TabPage) {
-        sp->start = item[l].start;
-        sp->userhl = item[l].minwid;
-        sp++;
-      }
-    }
-    sp->start = NULL;
-    sp->userhl = 0;
-  }
-
-  return width;
-}
-
-#if defined(FEAT_STL_OPT) || defined(FEAT_CMDL_INFO) \
-  || defined(FEAT_GUI_TABLINE) || defined(PROTO)
-/*
- * Get relative cursor position in window into "buf[buflen]", in the form 99%,
- * using "Top", "Bot" or "All" when appropriate.
- */
-void get_rel_pos(win_T *wp, char_u *buf, int buflen)
-{
-  long above;          /* number of lines above window */
-  long below;          /* number of lines below window */
-
-  above = wp->w_topline - 1;
-  above += diff_check_fill(wp, wp->w_topline) - wp->w_topfill;
-  below = wp->w_buffer->b_ml.ml_line_count - wp->w_botline + 1;
-  if (below <= 0)
-    vim_strncpy(buf, (char_u *)(above == 0 ? _("All") : _("Bot")),
-        (size_t)(buflen - 1));
-  else if (above <= 0)
-    vim_strncpy(buf, (char_u *)_("Top"), (size_t)(buflen - 1));
-  else
-    vim_snprintf((char *)buf, (size_t)buflen, "%2d%%", above > 1000000L
-        ? (int)(above / ((above + below) / 100L))
-        : (int)(above * 100L / (above + below)));
-}
-#endif
-
-/*
- * Append (file 2 of 8) to "buf[buflen]", if editing more than one file.
- * Return TRUE if it was appended.
- */
-static int 
-append_arg_number (
-    win_T *wp,
-    char_u *buf,
-    int buflen,
-    int add_file                   /* Add "file" before the arg number */
-)
-{
-  char_u      *p;
-
-  if (ARGCOUNT <= 1)            /* nothing to do */
-    return FALSE;
-
-  p = buf + STRLEN(buf);        /* go to the end of the buffer */
-  if (p - buf + 35 >= buflen)   /* getting too long */
-    return FALSE;
-  *p++ = ' ';
-  *p++ = '(';
-  if (add_file) {
-    STRCPY(p, "file ");
-    p += 5;
-  }
-  vim_snprintf((char *)p, (size_t)(buflen - (p - buf)),
-      wp->w_arg_idx_invalid ? "(%d) of %d)"
-      : "%d of %d)", wp->w_arg_idx + 1, ARGCOUNT);
-  return TRUE;
-}
-
-/*
- * Make "ffname" a full file name, set "sfname" to "ffname" if not NULL.
- * "ffname" becomes a pointer to allocated memory (or NULL).
- */
-void fname_expand(buf_T *buf, char_u **ffname, char_u **sfname)
-{
-  if (*ffname == NULL)          /* if no file name given, nothing to do */
-    return;
-  if (*sfname == NULL)          /* if no short file name given, use ffname */
-    *sfname = *ffname;
-  *ffname = fix_fname(*ffname);     /* expand to full path */
-
-#ifdef FEAT_SHORTCUT
-  if (!buf->b_p_bin) {
-    char_u  *rfname;
-
-    /* If the file name is a shortcut file, use the file it links to. */
-    rfname = mch_resolve_shortcut(*ffname);
-    if (rfname != NULL) {
-      free(*ffname);
-      *ffname = rfname;
-      *sfname = rfname;
-    }
-  }
-#endif
-}
-
-/*
- * Get the file name for an argument list entry.
- */
-char_u *alist_name(aentry_T *aep)
-{
-  buf_T       *bp;
-
-  /* Use the name from the associated buffer if it exists. */
-  bp = buflist_findnr(aep->ae_fnum);
-  if (bp == NULL || bp->b_fname == NULL)
-    return aep->ae_fname;
-  return bp->b_fname;
-}
-
-/*
- * do_arg_all(): Open up to 'count' windows, one for each argument.
- */
-void 
-do_arg_all (
-    int count,
-    int forceit,                    /* hide buffers in current windows */
-    int keep_tabs                  /* keep current tabs, for ":tab drop file" */
-)
-{
-  int i;
-  win_T       *wp, *wpnext;
-  char_u      *opened;          /* Array of weight for which args are open:
-                                 *  0: not opened
-                                 *  1: opened in other tab
-                                 *  2: opened in curtab
-                                 *  3: opened in curtab and curwin
-                                 */
-  int opened_len;               /* length of opened[] */
-  int use_firstwin = FALSE;             /* use first window for arglist */
-  int split_ret = OK;
-  int p_ea_save;
-  alist_T     *alist;           /* argument list to be used */
-  buf_T       *buf;
-  tabpage_T   *tpnext;
-  int had_tab = cmdmod.tab;
-  win_T       *old_curwin, *last_curwin;
-  tabpage_T   *old_curtab, *last_curtab;
-  win_T       *new_curwin = NULL;
-  tabpage_T   *new_curtab = NULL;
-
-  if (ARGCOUNT <= 0) {
-    /* Don't give an error message.  We don't want it when the ":all"
-     * command is in the .vimrc. */
-    return;
-  }
-  setpcmark();
-
-  opened_len = ARGCOUNT;
-  opened = xcalloc(opened_len, 1);
-
-  /* Autocommands may do anything to the argument list.  Make sure it's not
-   * freed while we are working here by "locking" it.  We still have to
-   * watch out for its size to be changed. */
-  alist = curwin->w_alist;
-  ++alist->al_refcount;
-
-  old_curwin = curwin;
-  old_curtab = curtab;
-
-
-  /*
-   * Try closing all windows that are not in the argument list.
-   * Also close windows that are not full width;
-   * When 'hidden' or "forceit" set the buffer becomes hidden.
-   * Windows that have a changed buffer and can't be hidden won't be closed.
-   * When the ":tab" modifier was used do this for all tab pages.
-   */
-  if (had_tab > 0)
-    goto_tabpage_tp(first_tabpage, TRUE, TRUE);
-  for (;; ) {
-    tpnext = curtab->tp_next;
-    for (wp = firstwin; wp != NULL; wp = wpnext) {
-      wpnext = wp->w_next;
-      buf = wp->w_buffer;
-      if (buf->b_ffname == NULL
-          || (!keep_tabs && buf->b_nwindows > 1)
-          || wp->w_width != Columns
-          )
-        i = opened_len;
-      else {
-        /* check if the buffer in this window is in the arglist */
-        for (i = 0; i < opened_len; ++i) {
-          if (i < alist->al_ga.ga_len
-              && (AARGLIST(alist)[i].ae_fnum == buf->b_fnum
-                  || path_full_compare(alist_name(&AARGLIST(alist)[i]),
-                      buf->b_ffname, TRUE) & kEqualFiles)) {
-            int weight = 1;
-
-            if (old_curtab == curtab) {
-              ++weight;
-              if (old_curwin == wp)
-                ++weight;
-            }
-
-            if (weight > (int)opened[i]) {
-              opened[i] = (char_u)weight;
-              if (i == 0) {
-                if (new_curwin != NULL)
-                  new_curwin->w_arg_idx = opened_len;
-                new_curwin = wp;
-                new_curtab = curtab;
-              }
-            } else if (keep_tabs)
-              i = opened_len;
-
-            if (wp->w_alist != alist) {
-              /* Use the current argument list for all windows
-               * containing a file from it. */
-              alist_unlink(wp->w_alist);
-              wp->w_alist = alist;
-              ++wp->w_alist->al_refcount;
-            }
-            break;
-          }
-        }
-      }
-      wp->w_arg_idx = i;
-
-      if (i == opened_len && !keep_tabs) {    /* close this window */
-        if (P_HID(buf) || forceit || buf->b_nwindows > 1
-            || !bufIsChanged(buf)) {
-          /* If the buffer was changed, and we would like to hide it,
-           * try autowriting. */
-          if (!P_HID(buf) && buf->b_nwindows <= 1
-              && bufIsChanged(buf)) {
-            (void)autowrite(buf, FALSE);
-            /* check if autocommands removed the window */
-            if (!win_valid(wp) || !buf_valid(buf)) {
-              wpnext = firstwin;                /* start all over... */
-              continue;
-            }
-          }
-          /* don't close last window */
-          if (firstwin == lastwin
-              && (first_tabpage->tp_next == NULL || !had_tab))
-            use_firstwin = TRUE;
-          else {
-            win_close(wp, !P_HID(buf) && !bufIsChanged(buf));
-            /* check if autocommands removed the next window */
-            if (!win_valid(wpnext))
-              wpnext = firstwin;                /* start all over... */
-          }
-        }
-      }
-    }
-
-    /* Without the ":tab" modifier only do the current tab page. */
-    if (had_tab == 0 || tpnext == NULL)
-      break;
-
-    /* check if autocommands removed the next tab page */
-    if (!valid_tabpage(tpnext))
-      tpnext = first_tabpage;           /* start all over...*/
-    goto_tabpage_tp(tpnext, TRUE, TRUE);
-  }
-
-  /*
-   * Open a window for files in the argument list that don't have one.
-   * ARGCOUNT may change while doing this, because of autocommands.
-   */
-  if (count > opened_len || count <= 0)
-    count = opened_len;
-
-  /* Don't execute Win/Buf Enter/Leave autocommands here. */
-  ++autocmd_no_enter;
-  ++autocmd_no_leave;
-  last_curwin = curwin;
-  last_curtab = curtab;
-  win_enter(lastwin, FALSE);
-  /* ":drop all" should re-use an empty window to avoid "--remote-tab"
-   * leaving an empty tab page when executed locally. */
-  if (keep_tabs && bufempty() && curbuf->b_nwindows == 1
-      && curbuf->b_ffname == NULL && !curbuf->b_changed)
-    use_firstwin = TRUE;
-
-  for (i = 0; i < count && i < opened_len && !got_int; ++i) {
-    if (alist == &global_alist && i == global_alist.al_ga.ga_len - 1)
-      arg_had_last = TRUE;
-    if (opened[i] > 0) {
-      /* Move the already present window to below the current window */
-      if (curwin->w_arg_idx != i) {
-        for (wpnext = firstwin; wpnext != NULL; wpnext = wpnext->w_next) {
-          if (wpnext->w_arg_idx == i) {
-            if (keep_tabs) {
-              new_curwin = wpnext;
-              new_curtab = curtab;
-            } else
-              win_move_after(wpnext, curwin);
-            break;
-          }
-        }
-      }
-    } else if (split_ret == OK) {
-      if (!use_firstwin) {              /* split current window */
-        p_ea_save = p_ea;
-        p_ea = TRUE;                    /* use space from all windows */
-        split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
-        p_ea = p_ea_save;
-        if (split_ret == FAIL)
-          continue;
-      } else        /* first window: do autocmd for leaving this buffer */
-        --autocmd_no_leave;
-
-      /*
-       * edit file "i"
-       */
-      curwin->w_arg_idx = i;
-      if (i == 0) {
-        new_curwin = curwin;
-        new_curtab = curtab;
-      }
-      (void)do_ecmd(0, alist_name(&AARGLIST(alist)[i]), NULL, NULL,
-          ECMD_ONE,
-          ((P_HID(curwin->w_buffer)
-            || bufIsChanged(curwin->w_buffer)) ? ECMD_HIDE : 0)
-          + ECMD_OLDBUF, curwin);
-      if (use_firstwin)
-        ++autocmd_no_leave;
-      use_firstwin = FALSE;
-    }
-    ui_breakcheck();
-
-    /* When ":tab" was used open a new tab for a new window repeatedly. */
-    if (had_tab > 0 && tabpage_index(NULL) <= p_tpm)
-      cmdmod.tab = 9999;
-  }
-
-  /* Remove the "lock" on the argument list. */
-  alist_unlink(alist);
-
-  --autocmd_no_enter;
-  /* restore last referenced tabpage's curwin */
-  if (last_curtab != new_curtab) {
-    if (valid_tabpage(last_curtab))
-      goto_tabpage_tp(last_curtab, TRUE, TRUE);
-    if (win_valid(last_curwin))
-      win_enter(last_curwin, FALSE);
-  }
-  /* to window with first arg */
-  if (valid_tabpage(new_curtab))
-    goto_tabpage_tp(new_curtab, TRUE, TRUE);
-  if (win_valid(new_curwin))
-    win_enter(new_curwin, FALSE);
-
-  --autocmd_no_leave;
-  free(opened);
-}
-
-/*
- * Open a window for a number of buffers.
- */
-void ex_buffer_all(exarg_T *eap)
-{
-  buf_T       *buf;
-  win_T       *wp, *wpnext;
-  int split_ret = OK;
-  int p_ea_save;
-  int open_wins = 0;
-  int r;
-  int count;                    /* Maximum number of windows to open. */
-  int all;                      /* When TRUE also load inactive buffers. */
-  int had_tab = cmdmod.tab;
-  tabpage_T   *tpnext;
-
-  if (eap->addr_count == 0)     /* make as many windows as possible */
-    count = 9999;
-  else
-    count = eap->line2;         /* make as many windows as specified */
-  if (eap->cmdidx == CMD_unhide || eap->cmdidx == CMD_sunhide)
-    all = FALSE;
-  else
-    all = TRUE;
-
-  setpcmark();
-
-
-  /*
-   * Close superfluous windows (two windows for the same buffer).
-   * Also close windows that are not full-width.
-   */
-  if (had_tab > 0)
-    goto_tabpage_tp(first_tabpage, TRUE, TRUE);
-  for (;; ) {
-    tpnext = curtab->tp_next;
-    for (wp = firstwin; wp != NULL; wp = wpnext) {
-      wpnext = wp->w_next;
-      if ((wp->w_buffer->b_nwindows > 1
-           || ((cmdmod.split & WSP_VERT)
-               ? wp->w_height + wp->w_status_height < Rows - p_ch
-               - tabline_height()
-               : wp->w_width != Columns)
-           || (had_tab > 0 && wp != firstwin)
-           ) && firstwin != lastwin
-          && !(wp->w_closing || wp->w_buffer->b_closing)
-          ) {
-        win_close(wp, FALSE);
-        wpnext = firstwin;              /* just in case an autocommand does
-                                           something strange with windows */
-        tpnext = first_tabpage;         /* start all over...*/
-        open_wins = 0;
-      } else
-        ++open_wins;
-    }
-
-    /* Without the ":tab" modifier only do the current tab page. */
-    if (had_tab == 0 || tpnext == NULL)
-      break;
-    goto_tabpage_tp(tpnext, TRUE, TRUE);
-  }
-
-  /*
-   * Go through the buffer list.  When a buffer doesn't have a window yet,
-   * open one.  Otherwise move the window to the right position.
-   * Watch out for autocommands that delete buffers or windows!
-   */
-  /* Don't execute Win/Buf Enter/Leave autocommands here. */
-  ++autocmd_no_enter;
-  win_enter(lastwin, FALSE);
-  ++autocmd_no_leave;
-  for (buf = firstbuf; buf != NULL && open_wins < count; buf = buf->b_next) {
-    /* Check if this buffer needs a window */
-    if ((!all && buf->b_ml.ml_mfp == NULL) || !buf->b_p_bl)
-      continue;
-
-    if (had_tab != 0) {
-      /* With the ":tab" modifier don't move the window. */
-      if (buf->b_nwindows > 0)
-        wp = lastwin;               /* buffer has a window, skip it */
-      else
-        wp = NULL;
-    } else {
-      /* Check if this buffer already has a window */
-      for (wp = firstwin; wp != NULL; wp = wp->w_next)
-        if (wp->w_buffer == buf)
-          break;
-      /* If the buffer already has a window, move it */
-      if (wp != NULL)
-        win_move_after(wp, curwin);
-    }
-
-    if (wp == NULL && split_ret == OK) {
-      /* Split the window and put the buffer in it */
-      p_ea_save = p_ea;
-      p_ea = TRUE;                      /* use space from all windows */
-      split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
-      ++open_wins;
-      p_ea = p_ea_save;
-      if (split_ret == FAIL)
-        continue;
-
-      /* Open the buffer in this window. */
-#if defined(HAS_SWAP_EXISTS_ACTION)
-      swap_exists_action = SEA_DIALOG;
-#endif
-      set_curbuf(buf, DOBUF_GOTO);
-      if (!buf_valid(buf)) {            /* autocommands deleted the buffer!!! */
-#if defined(HAS_SWAP_EXISTS_ACTION)
-        swap_exists_action = SEA_NONE;
-# endif
-        break;
-      }
-#if defined(HAS_SWAP_EXISTS_ACTION)
-      if (swap_exists_action == SEA_QUIT) {
-        cleanup_T cs;
-
-        /* Reset the error/interrupt/exception state here so that
-         * aborting() returns FALSE when closing a window. */
-        enter_cleanup(&cs);
-
-        /* User selected Quit at ATTENTION prompt; close this window. */
-        win_close(curwin, TRUE);
-        --open_wins;
-        swap_exists_action = SEA_NONE;
-        swap_exists_did_quit = TRUE;
-
-        /* Restore the error/interrupt/exception state if not
-         * discarded by a new aborting error, interrupt, or uncaught
-         * exception. */
-        leave_cleanup(&cs);
-      } else
-        handle_swap_exists(NULL);
-#endif
-    }
-
-    ui_breakcheck();
-    if (got_int) {
-      (void)vgetc();            /* only break the file loading, not the rest */
-      break;
-    }
-    /* Autocommands deleted the buffer or aborted script processing!!! */
-    if (aborting())
-      break;
-    /* When ":tab" was used open a new tab for a new window repeatedly. */
-    if (had_tab > 0 && tabpage_index(NULL) <= p_tpm)
-      cmdmod.tab = 9999;
-  }
-  --autocmd_no_enter;
-  win_enter(firstwin, FALSE);           /* back to first window */
-  --autocmd_no_leave;
-
-  /*
-   * Close superfluous windows.
-   */
-  for (wp = lastwin; open_wins > count; ) {
-    r = (P_HID(wp->w_buffer) || !bufIsChanged(wp->w_buffer)
-         || autowrite(wp->w_buffer, FALSE) == OK);
-    if (!win_valid(wp)) {
-      /* BufWrite Autocommands made the window invalid, start over */
-      wp = lastwin;
-    } else if (r) {
-      win_close(wp, !P_HID(wp->w_buffer));
-      --open_wins;
-      wp = lastwin;
-    } else {
-      wp = wp->w_prev;
-      if (wp == NULL)
-        break;
-    }
-  }
-}
-
-
-static int chk_modeline(linenr_T, int);
-
-/*
- * do_modelines() - process mode lines for the current file
- *
- * "flags" can be:
- * OPT_WINONLY	    only set options local to window
- * OPT_NOWIN	    don't set options local to window
- *
- * Returns immediately if the "ml" option isn't set.
- */
-void do_modelines(int flags)
-{
-  linenr_T lnum;
-  int nmlines;
-  static int entered = 0;
-
-  if (!curbuf->b_p_ml || (nmlines = (int)p_mls) == 0)
-    return;
-
-  /* Disallow recursive entry here.  Can happen when executing a modeline
-   * triggers an autocommand, which reloads modelines with a ":do". */
-  if (entered)
-    return;
-
-  ++entered;
-  for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count && lnum <= nmlines;
-       ++lnum)
-    if (chk_modeline(lnum, flags) == FAIL)
-      nmlines = 0;
-
-  for (lnum = curbuf->b_ml.ml_line_count; lnum > 0 && lnum > nmlines
-       && lnum > curbuf->b_ml.ml_line_count - nmlines; --lnum)
-    if (chk_modeline(lnum, flags) == FAIL)
-      nmlines = 0;
-  --entered;
-}
-
-#include "version_defs.h"            /* for version number */
-
-/*
- * chk_modeline() - check a single line for a mode string
- * Return FAIL if an error encountered.
- */
-static int 
-chk_modeline (
-    linenr_T lnum,
-    int flags                      /* Same as for do_modelines(). */
-)
-{
-  char_u      *s;
-  char_u      *e;
-  char_u      *linecopy;                /* local copy of any modeline found */
-  int prev;
-  int vers;
-  int end;
-  int retval = OK;
-  char_u      *save_sourcing_name;
-  linenr_T save_sourcing_lnum;
-  scid_T save_SID;
-
-  prev = -1;
-  for (s = ml_get(lnum); *s != NUL; ++s) {
-    if (prev == -1 || vim_isspace(prev)) {
-      if ((prev != -1 && STRNCMP(s, "ex:", (size_t)3) == 0)
-          || STRNCMP(s, "vi:", (size_t)3) == 0)
-        break;
-      /* Accept both "vim" and "Vim". */
-      if ((s[0] == 'v' || s[0] == 'V') && s[1] == 'i' && s[2] == 'm') {
-        if (s[3] == '<' || s[3] == '=' || s[3] == '>')
-          e = s + 4;
-        else
-          e = s + 3;
-        vers = getdigits(&e);
-        if (*e == ':'
-            && (s[0] != 'V'
-                || STRNCMP(skipwhite(e + 1), "set", 3) == 0)
-            && (s[3] == ':'
-                || (VIM_VERSION_100 >= vers && isdigit(s[3]))
-                || (VIM_VERSION_100 < vers && s[3] == '<')
-                || (VIM_VERSION_100 > vers && s[3] == '>')
-                || (VIM_VERSION_100 == vers && s[3] == '=')))
-          break;
-      }
-    }
-    prev = *s;
-  }
-
-  if (*s) {
-    do                                  /* skip over "ex:", "vi:" or "vim:" */
-      ++s;
-    while (s[-1] != ':');
-
-    s = linecopy = vim_strsave(s);      /* copy the line, it will change */
-    if (linecopy == NULL)
-      return FAIL;
-
-    save_sourcing_lnum = sourcing_lnum;
-    save_sourcing_name = sourcing_name;
-    sourcing_lnum = lnum;               /* prepare for emsg() */
-    sourcing_name = (char_u *)"modelines";
-
-    end = FALSE;
-    while (end == FALSE) {
-      s = skipwhite(s);
-      if (*s == NUL)
-        break;
-
-      /*
-       * Find end of set command: ':' or end of line.
-       * Skip over "\:", replacing it with ":".
-       */
-      for (e = s; *e != ':' && *e != NUL; ++e)
-        if (e[0] == '\\' && e[1] == ':')
-          STRMOVE(e, e + 1);
-      if (*e == NUL)
-        end = TRUE;
-
-      /*
-       * If there is a "set" command, require a terminating ':' and
-       * ignore the stuff after the ':'.
-       * "vi:set opt opt opt: foo" -- foo not interpreted
-       * "vi:opt opt opt: foo" -- foo interpreted
-       * Accept "se" for compatibility with Elvis.
-       */
-      if (STRNCMP(s, "set ", (size_t)4) == 0
-          || STRNCMP(s, "se ", (size_t)3) == 0) {
-        if (*e != ':')                  /* no terminating ':'? */
-          break;
-        end = TRUE;
-        s = vim_strchr(s, ' ') + 1;
-      }
-      *e = NUL;                         /* truncate the set command */
-
-      if (*s != NUL) {                  /* skip over an empty "::" */
-        save_SID = current_SID;
-        current_SID = SID_MODELINE;
-        retval = do_set(s, OPT_MODELINE | OPT_LOCAL | flags);
-        current_SID = save_SID;
-        if (retval == FAIL)                     /* stop if error found */
-          break;
-      }
-      s = e + 1;                        /* advance to next part */
-    }
-
-    sourcing_lnum = save_sourcing_lnum;
-    sourcing_name = save_sourcing_name;
-
-    free(linecopy);
-  }
-  return retval;
-}
-
-int read_viminfo_bufferlist(vir_T *virp, int writing)
-{
-  char_u      *tab;
-  linenr_T lnum;
-  colnr_T col;
-  buf_T       *buf;
-  char_u      *sfname;
-  char_u      *xline;
-
-  /* Handle long line and escaped characters. */
-  xline = viminfo_readstring(virp, 1, FALSE);
-
-  /* don't read in if there are files on the command-line or if writing: */
-  if (xline != NULL && !writing && ARGCOUNT == 0
-      && find_viminfo_parameter('%') != NULL) {
-    /* Format is: <fname> Tab <lnum> Tab <col>.
-     * Watch out for a Tab in the file name, work from the end. */
-    lnum = 0;
-    col = 0;
-    tab = vim_strrchr(xline, '\t');
-    if (tab != NULL) {
-      *tab++ = '\0';
-      col = (colnr_T)atoi((char *)tab);
-      tab = vim_strrchr(xline, '\t');
-      if (tab != NULL) {
-        *tab++ = '\0';
-        lnum = atol((char *)tab);
-      }
-    }
-
-    /* Expand "~/" in the file name at "line + 1" to a full path.
-     * Then try shortening it by comparing with the current directory */
-    expand_env(xline, NameBuff, MAXPATHL);
-    sfname = path_shorten_fname_if_possible(NameBuff);
-
-    buf = buflist_new(NameBuff, sfname, (linenr_T)0, BLN_LISTED);
-    if (buf != NULL) {          /* just in case... */
-      buf->b_last_cursor.lnum = lnum;
-      buf->b_last_cursor.col = col;
-      buflist_setfpos(buf, curwin, lnum, col, FALSE);
-    }
-  }
-  free(xline);
-
-  return viminfo_readline(virp);
-}
-
-void write_viminfo_bufferlist(FILE *fp)
-{
-  buf_T       *buf;
-  win_T       *win;
-  tabpage_T   *tp;
-  char_u      *line;
-  int max_buffers;
-
-  if (find_viminfo_parameter('%') == NULL)
-    return;
-
-  /* Without a number -1 is returned: do all buffers. */
-  max_buffers = get_viminfo_parameter('%');
-
-  /* Allocate room for the file name, lnum and col. */
-#define LINE_BUF_LEN (MAXPATHL + 40)
-  line = xmalloc(LINE_BUF_LEN);
-
-  FOR_ALL_TAB_WINDOWS(tp, win)
-  set_last_cursor(win);
-
-  fputs(_("\n# Buffer list:\n"), fp);
-  for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
-    if (buf->b_fname == NULL
-        || !buf->b_p_bl
-        || bt_quickfix(buf)
-        || removable(buf->b_ffname))
-      continue;
-
-    if (max_buffers-- == 0)
-      break;
-    putc('%', fp);
-    home_replace(NULL, buf->b_ffname, line, MAXPATHL, TRUE);
-    vim_snprintf_add((char *)line, LINE_BUF_LEN, "\t%" PRId64 "\t%d",
-        (int64_t)buf->b_last_cursor.lnum,
-        buf->b_last_cursor.col);
-    viminfo_writestring(fp, line);
-  }
-  free(line);
-}
-
-
-/*
- * Return special buffer name.
- * Returns NULL when the buffer has a normal file name.
- */
-char_u *buf_spname(buf_T *buf)
-{
-  if (bt_quickfix(buf)) {
-    win_T       *win;
-    tabpage_T   *tp;
-
-    /*
-     * For location list window, w_llist_ref points to the location list.
-     * For quickfix window, w_llist_ref is NULL.
-     */
-    if (find_win_for_buf(buf, &win, &tp) == OK && win->w_llist_ref != NULL)
-      return (char_u *)_(msg_loclist);
-    else
-      return (char_u *)_(msg_qflist);
-  }
-  /* There is no _file_ when 'buftype' is "nofile", b_sfname
-   * contains the name as specified by the user */
-  if (bt_nofile(buf)) {
-    if (buf->b_sfname != NULL)
-      return buf->b_sfname;
-    return (char_u *)_("[Scratch]");
-  }
-  if (buf->b_fname == NULL)
-    return (char_u *)_("[No Name]");
-  return NULL;
-}
-
-/*
- * Find a window for buffer "buf".
- * If found OK is returned and "wp" and "tp" are set to the window and tabpage.
- * If not found FAIL is returned.
- */
-int find_win_for_buf(buf_T *buf, win_T **wp, tabpage_T **tp)
-{
-  FOR_ALL_TAB_WINDOWS(*tp, *wp)
-  if ((*wp)->w_buffer == buf)
-    goto win_found;
-  return FAIL;
-win_found:
-  return OK;
-}
-
-/*
- * Insert the sign into the signlist.
- */
-static void insert_sign(
-    buf_T *buf,             /* buffer to store sign in */
-    signlist_T *prev,       /* previous sign entry */
-    signlist_T *next,       /* next sign entry */
-    int id,                 /* sign ID */
-    linenr_T lnum,          /* line number which gets the mark */
-    int typenr              /* typenr of sign we are adding */
-    )
-{
-    signlist_T *newsign = xmalloc(sizeof(signlist_T));
-    newsign->id = id;
-    newsign->lnum = lnum;
-    newsign->typenr = typenr;
-    newsign->next = next;
-
-    if (prev == NULL) {
-        /* When adding first sign need to redraw the windows to create the
-         * column for signs. */
-        if (buf->b_signlist == NULL) {
-            redraw_buf_later(buf, NOT_VALID);
-            changed_cline_bef_curs();
-        }
-
-        /* first sign in signlist */
-        buf->b_signlist = newsign;
-    }
-    else {
-        prev->next = newsign;
-    }
-}
-
-/*
- * Add the sign into the signlist. Find the right spot to do it though.
- */
-void buf_addsign(
-    buf_T *buf,     /* buffer to store sign in */
-    int id,         /* sign ID */
-    linenr_T lnum,  /* line number which gets the mark */
-    int typenr      /* typenr of sign we are adding */
-    )
-{
-    signlist_T *sign;  /* a sign in the signlist */
-    signlist_T *prev;  /* the previous sign */
-
-    prev = NULL;
-    for (sign = buf->b_signlist; sign != NULL; sign = sign->next) {
-        if (lnum == sign->lnum && id == sign->id) {
-            sign->typenr = typenr;
-            return;
-        }
-        else if (id < 0 /* keep signs sorted by lnum */
-                 && lnum < sign->lnum)
-        {
-            insert_sign(buf, prev, sign, id, lnum, typenr);
-            return;
-        }
-        prev = sign;
-    }
-    insert_sign(buf, prev, sign, id, lnum, typenr);
-
-    return;
-}
-
-linenr_T buf_change_sign_type(
-    buf_T *buf,         /* buffer to store sign in */
-    int markId,         /* sign ID */
-    int typenr          /* typenr of sign we are adding */
-    )
-{
-    signlist_T *sign;  /* a sign in the signlist */
-
-    for (sign = buf->b_signlist; sign != NULL; sign = sign->next) {
-        if (sign->id == markId) {
-            sign->typenr = typenr;
-            return sign->lnum;
-        }
-    }
-
-    return (linenr_T)0;
-}
-
-int buf_getsigntype(
-        buf_T *buf,
-        linenr_T lnum,
-        int type /* SIGN_ICON, SIGN_TEXT, SIGN_ANY, SIGN_LINEHL */
-        )
-{
-    signlist_T	*sign;		/* a sign in a b_signlist */
-
-    for (sign = buf->b_signlist; sign != NULL; sign = sign->next) {
-        if (sign->lnum == lnum
-                && (type == SIGN_ANY
-                    || (type == SIGN_TEXT
-                        && sign_get_text(sign->typenr) != NULL)
-                    || (type == SIGN_LINEHL
-                        && sign_get_attr(sign->typenr, TRUE) != 0))) {
-            return sign->typenr;
-        }
-    }
-    return 0;
-}
-
-
-linenr_T buf_delsign(
-        buf_T *buf, /* buffer sign is stored in */
-        int id      /* sign id */
-        )
-{
-    signlist_T **lastp; /* pointer to pointer to current sign */
-    signlist_T *sign;   /* a sign in a b_signlist */
-    signlist_T *next;   /* the next sign in a b_signlist */
-    linenr_T lnum;      /* line number whose sign was deleted */
-
-    lastp = &buf->b_signlist;
-    lnum = 0;
-    for (sign = buf->b_signlist; sign != NULL; sign = next) {
-        next = sign->next;
-        if (sign->id == id) {
-            *lastp = next;
-            lnum = sign->lnum;
-            free(sign);
-            break;
-        } else {
-            lastp = &sign->next;
-        }
-    }
-
-    /* When deleted the last sign needs to redraw the windows to remove the
-     * sign column. */
-    if (buf->b_signlist == NULL) {
-        redraw_buf_later(buf, NOT_VALID);
-        changed_cline_bef_curs();
-    }
-
-    return lnum;
-}
-
-
-/*
- * Find the line number of the sign with the requested id. If the sign does
- * not exist, return 0 as the line number. This will still let the correct file
- * get loaded.
- */
-int buf_findsign(
-    buf_T *buf,      /* buffer to store sign in */
-    int id          /* sign ID */
-    )
-{
-    signlist_T *sign;  /* a sign in the signlist */
-
-    for (sign = buf->b_signlist; sign != NULL; sign = sign->next) {
-        if (sign->id == id) {
-            return sign->lnum;
-        }
-    }
-
-    return 0;
-}
-
-int buf_findsign_id(
-    buf_T *buf,         /* buffer whose sign we are searching for */
-    linenr_T lnum       /* line number of sign */
-    )
-{
-    signlist_T *sign;   /* a sign in the signlist */
-
-    for (sign = buf->b_signlist; sign != NULL; sign = sign->next) {
-        if (sign->lnum == lnum) {
-            return sign->id;
-        }
-    }
-
-    return 0;
-}
-
-
-/*
- * Delete signs in buffer "buf".
- */
-void buf_delete_signs(buf_T *buf)
-{
-    signlist_T *next;
-
-    while (buf->b_signlist != NULL) {
-        next = buf->b_signlist->next;
-        free(buf->b_signlist);
-        buf->b_signlist = next;
-    }
-}
-
-/*
- * Delete all signs in all buffers.
- */
-void buf_delete_all_signs()
-{
-    buf_T *buf;     /* buffer we are checking for signs */
-
-    for (buf = firstbuf; buf != NULL; buf = buf->b_next) {
-        if (buf->b_signlist != NULL) {
-            /* Need to redraw the windows to remove the sign column. */
-            redraw_buf_later(buf, NOT_VALID);
-            buf_delete_signs(buf);
-        }
-    }
-}
-
-/*
- * List placed signs for "rbuf".  If "rbuf" is NULL do it for all buffers.
- */
-void sign_list_placed(buf_T *rbuf)
-{
-    buf_T *buf;
-    signlist_T *p;
-    char lbuf[BUFSIZ];
-
-    MSG_PUTS_TITLE(_("\n--- Signs ---"));
-    msg_putchar('\n');
-    if (rbuf == NULL) {
-        buf = firstbuf;
-    } else {
-        buf = rbuf;
-    }
-    while (buf != NULL && !got_int) {
-        if (buf->b_signlist != NULL) {
-            vim_snprintf(lbuf, BUFSIZ, _("Signs for %s:"), buf->b_fname);
-            MSG_PUTS_ATTR(lbuf, hl_attr(HLF_D));
-            msg_putchar('\n');
-        }
-        for (p = buf->b_signlist; p != NULL && !got_int; p = p->next) {
-            vim_snprintf(lbuf, BUFSIZ, _("    line=%" PRId64 "  id=%d  name=%s"),
-                    (int64_t)p->lnum, p->id, sign_typenr2name(p->typenr));
-            MSG_PUTS(lbuf);
-            msg_putchar('\n');
-        }
-        if (rbuf != NULL) {
-            break;
-        }
-        buf = buf->b_next;
-    }
-}
-
-/*
- * Adjust a placed sign for inserted/deleted lines.
- */
-void sign_mark_adjust(linenr_T line1, linenr_T line2, long amount, long amount_after)
-{
-    signlist_T *sign;  /* a sign in a b_signlist */
-
-    for (sign = curbuf->b_signlist; sign != NULL; sign = sign->next) {
-        if (sign->lnum >= line1 && sign->lnum <= line2) {
-            if (amount == MAXLNUM) {
-                sign->lnum = line1;
-            } else {
-                sign->lnum += amount;
-            }
-        }
-        else if (sign->lnum > line2)
-            sign->lnum += amount_after;
-    }
-}
-
-/*
- * Set 'buflisted' for curbuf to "on" and trigger autocommands if it changed.
- */
-void set_buflisted(int on)
-{
-  if (on != curbuf->b_p_bl) {
-    curbuf->b_p_bl = on;
-    if (on)
-      apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, curbuf);
-    else
-      apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
-  }
-}
-
-/*
- * Read the file for "buf" again and check if the contents changed.
- * Return TRUE if it changed or this could not be checked.
- */
-int buf_contents_changed(buf_T *buf)
-{
-  buf_T       *newbuf;
-  int differ = TRUE;
-  linenr_T lnum;
-  aco_save_T aco;
-  exarg_T ea;
-
-  /* Allocate a buffer without putting it in the buffer list. */
-  newbuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
-  if (newbuf == NULL)
-    return TRUE;
-
-  /* Force the 'fileencoding' and 'fileformat' to be equal. */
-  prep_exarg(&ea, buf);
-
-  /* set curwin/curbuf to buf and save a few things */
-  aucmd_prepbuf(&aco, newbuf);
-
-  if (ml_open(curbuf) == OK
-      && readfile(buf->b_ffname, buf->b_fname,
-          (linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM,
-          &ea, READ_NEW | READ_DUMMY) == OK) {
-    /* compare the two files line by line */
-    if (buf->b_ml.ml_line_count == curbuf->b_ml.ml_line_count) {
-      differ = FALSE;
-      for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
-        if (STRCMP(ml_get_buf(buf, lnum, FALSE), ml_get(lnum)) != 0) {
-          differ = TRUE;
-          break;
-        }
-    }
-  }
-  free(ea.cmd);
-
-  /* restore curwin/curbuf and a few other things */
-  aucmd_restbuf(&aco);
-
-  if (curbuf != newbuf)         /* safety check */
-    wipe_buffer(newbuf, FALSE);
-
-  return differ;
-}
-
-/*
- * Wipe out a buffer and decrement the last buffer number if it was used for
- * this buffer.  Call this to wipe out a temp buffer that does not contain any
- * marks.
- */
-void 
-wipe_buffer (
-    buf_T *buf,
-    int aucmd                   /* When TRUE trigger autocommands. */
-)
-{
-  if (buf->b_fnum == top_file_num - 1)
-    --top_file_num;
-
-  if (!aucmd)               /* Don't trigger BufDelete autocommands here. */
-    block_autocmds();
-  close_buffer(NULL, buf, DOBUF_WIPE, FALSE);
-  if (!aucmd)
-    unblock_autocmds();
-}