diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/nvim/ui_compositor.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/nvim/ui_compositor.c b/src/nvim/ui_compositor.c index 325ad31eaf..9d3ec21949 100644 --- a/src/nvim/ui_compositor.c +++ b/src/nvim/ui_compositor.c @@ -312,6 +312,9 @@ ScreenGrid *ui_comp_mouse_focus(int row, int col) static void compose_line(Integer row, Integer startcol, Integer endcol, LineFlags flags) { + // If rightleft is set, startcol may be -1. In such cases, the assertions + // will fail because no overlap is found. Adjust startcol to prevent it. + startcol = MAX(startcol, 0); // in case we start on the right half of a double-width char, we need to // check the left half. But skip it in output if it wasn't doublewidth. int skipstart = 0, skipend = 0; |