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| author | Jaehwang Jung <tomtomjhj@gmail.com> | 2026-04-19 02:16:31 +0900 |
|---|---|---|
| committer | zeertzjq <zeertzjq@outlook.com> | 2026-04-20 09:30:30 +0800 |
| commit | 79a7a4abe11f9b678cbf7073a4464fbe8631d57a (patch) | |
| tree | 1fe990acba034f69abffed3acccd847062ae9d84 /src | |
| parent | a433f1d0ac8bc677d91521a22e546cfc5ba6c423 (diff) | |
fix(smoothscroll): crash when resizing to textoff with showbreak
vim-patch:9.2.0362: division by zero with smoothscroll and small windows
Problem: Resizing a smoothscrolled wrapped window to its textoff width
with 'showbreak' can leave wrapped continuation lines with
zero text width. win_lbr_chartabsize() still runs the partial max_head_vcol calculation in
that state and divides by width2, crashing during redraw.
Solution: Skip that partial head calculation when the wrapped
continuation width is zero, matching the other width2 guards
in charset.c (Jaehwang Jung)
closes: vim/vim#20012
AI-assisted: Codex
https://github.com/vim/vim/commit/0e31fb024c846e36bb0d26d01ff179a0d1b3eae4
Diffstat (limited to 'src')
| -rw-r--r-- | src/nvim/plines.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/nvim/plines.c b/src/nvim/plines.c index 1fafdf2206..12b40c1a5a 100644 --- a/src/nvim/plines.c +++ b/src/nvim/plines.c @@ -269,7 +269,7 @@ CharSize charsize_regular(CharsizeArg *csarg, char *const cur, colnr_T const vco if (max_head_vcol == 0 || vcol + size + added < max_head_vcol) { head += cnt * head_mid; - } else if (max_head_vcol > vcol + head_prev + prev_rem) { + } else if (width2 > 0 && max_head_vcol > vcol + head_prev + prev_rem) { head += (max_head_vcol - (vcol + head_prev + prev_rem) + width2 - 1) / width2 * head_mid; } else if (max_head_vcol < 0) { |