commit 3a6d6d740110e6ee1b092d05ad746244eedabe4b
parent 211964d56ee00a7d46e251cbc150afb79138ae37
Author: Shi Tian <shitian@cock.li>
Date: Sun, 25 Jun 2023 05:38:33 +0000
Fix for wide character being incorrectly cleared on MODE_INSERT
Under insert mode, when inserting a normal character in front of
a wide character, the affected region is shifted to the right by
one cell. However, the empty cell is reset as if being a part of a
wide character, causing the following cell being mishandled as a
dummy cell.
To reproduce the bug:
printf '\033[4h' # set MODE_INSERT
printf 妳好
printf '\033[4D'
printf 'x'
printf '\033[4l\n'
Diffstat:
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/st.c b/st.c
@@ -2471,8 +2471,10 @@ check_control_code:
gp = &term.line[term.c.y][term.c.x];
}
- if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
+ if (IS_SET(MODE_INSERT) && term.c.x+width < term.col) {
memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
+ gp->mode &= ~ATTR_WIDE;
+ }
if (term.c.x+width > term.col) {
tnewline(1);