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fix(statuscolumn): misleading v:lnum for virtual lines #32912

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Problem:  Virtual 'statuscolumn' lines are evaluated with a misleading v:(rel)num.
          Namely set to the line above for `virt_lines_above = true` lines, or even
          the last drawn line for a partial redraw.
Solution: Set `v:lnum` for the first evaluated row of a line, first above
          virtual line of a row and first non-virtual line of a row.
This commit is contained in:
luukvbaal
2025-03-15 16:18:23 +01:00
committed by GitHub
parent f8d5811c71
commit 19fc65acbc
2 changed files with 28 additions and 8 deletions
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12
src/nvim/drawline.c
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@@ -664,11 +664,15 @@ static void draw_lnum_col(win_T *wp, winlinevars_T *wlv)
}
/// Build and draw the 'statuscolumn' string for line "lnum" in window "wp".
static void draw_statuscol(win_T *wp, winlinevars_T *wlv, linenr_T lnum, int virtnum, int col_rows,
static void draw_statuscol(win_T *wp, winlinevars_T *wlv, int virtnum, int col_rows,
statuscol_T *stcp)
{
// When called for the first non-filler row of line "lnum" set num v:vars
linenr_T relnum = virtnum == 0 ? abs(get_cursor_rel_lnum(wp, lnum)) : -1;
// Adjust lnum for filler lines belonging to the line above and set lnum v:vars for first
// row, first non-filler line, and first filler line belonging to the current line.
linenr_T lnum = wlv->lnum - ((wlv->n_virt_lines - wlv->filler_todo) < wlv->n_virt_below);
linenr_T relnum = (virtnum == -wlv->filler_lines || virtnum == 0
|| virtnum == (wlv->n_virt_below - wlv->filler_lines))
? abs(get_cursor_rel_lnum(wp, lnum)) : -1;
char buf[MAXPATHL];
// When a buffer's line count has changed, make a best estimate for the full
@@ -1639,7 +1643,7 @@ int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, int col_rows, b
} else if (statuscol.draw) {
// Draw 'statuscolumn' if it is set.
const int v = (int)(ptr - line);
draw_statuscol(wp, &wlv, lnum, wlv.row - startrow - wlv.filler_lines, col_rows, &statuscol);
draw_statuscol(wp, &wlv, wlv.row - startrow - wlv.filler_lines, col_rows, &statuscol);
if (wp->w_redr_statuscol) {
break;
}