Port vim's patch 7.4.338 ('breakindent')

1 files changed, 13 insertions, 9 deletions

diff --git a/src/nvim/edit.c b/src/nvim/edit.c
index 93e127394b..6158176e56 100644
--- a/src/nvim/edit.c
+++ b/src/nvim/edit.c
@@ -1551,7 +1551,7 @@ change_indent (
         new_cursor_col += (*mb_ptr2len)(ptr + new_cursor_col);
       else
         ++new_cursor_col;
-      vcol += lbr_chartabsize(ptr + new_cursor_col, (colnr_T)vcol);
+      vcol += lbr_chartabsize(ptr, ptr + new_cursor_col, (colnr_T)vcol);
     }
     vcol = last_vcol;
 
@@ -5898,9 +5898,11 @@ int oneleft(void)
     width = 1;
     for (;; ) {
       coladvance(v - width);
-      /* getviscol() is slow, skip it when 'showbreak' is empty and
-       * there are no multi-byte characters */
+      /* getviscol() is slow, skip it when 'showbreak' is empty, 
+         'breakindent' is not set and there are no multi-byte 
+         characters */
       if ((*p_sbr == NUL
+           && !curwin->w_p_bri
            && !has_mbyte
            ) || getviscol() < v)
         break;
@@ -7914,10 +7916,10 @@ static int ins_tab(void)
     getvcol(curwin, &fpos, &vcol, NULL, NULL);
     getvcol(curwin, cursor, &want_vcol, NULL, NULL);
 
-    /* Use as many TABs as possible.  Beware of 'showbreak' and
-     * 'linebreak' adding extra virtual columns. */
+    /* Use as many TABs as possible.  Beware of 'breakindent', 'showbreak'
+       and 'linebreak' adding extra virtual columns. */
     while (vim_iswhite(*ptr)) {
-      i = lbr_chartabsize((char_u *)"\t", vcol);
+      i = lbr_chartabsize(NULL, (char_u *)"\t", vcol);
       if (vcol + i > want_vcol)
         break;
       if (*ptr != TAB) {
@@ -7936,10 +7938,11 @@ static int ins_tab(void)
 
     if (change_col >= 0) {
       int repl_off = 0;
+      char_u *line = ptr;
 
       /* Skip over the spaces we need. */
       while (vcol < want_vcol && *ptr == ' ') {
-        vcol += lbr_chartabsize(ptr, vcol);
+        vcol += lbr_chartabsize(line, ptr, vcol);
         ++ptr;
         ++repl_off;
       }
@@ -8126,6 +8129,7 @@ int ins_copychar(linenr_T lnum)
   int c;
   int temp;
   char_u  *ptr, *prev_ptr;
+  char_u  *line;
 
   if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count) {
     vim_beep();
@@ -8134,12 +8138,12 @@ int ins_copychar(linenr_T lnum)
 
   /* try to advance to the cursor column */
   temp = 0;
-  ptr = ml_get(lnum);
+  line = ptr = ml_get(lnum);
   prev_ptr = ptr;
   validate_virtcol();
   while ((colnr_T)temp < curwin->w_virtcol && *ptr != NUL) {
     prev_ptr = ptr;
-    temp += lbr_chartabsize_adv(&ptr, (colnr_T)temp);
+    temp += lbr_chartabsize_adv(line, &ptr, (colnr_T)temp);
   }
   if ((colnr_T)temp > curwin->w_virtcol)
     ptr = prev_ptr;