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authorShi Tian <shitian@cock.li>2023-06-25 05:38:33 +0000
committerHiltjo Posthuma <hiltjo@codemadness.org>2023-06-25 11:59:06 +0200
commit3a6d6d740110e6ee1b092d05ad746244eedabe4b (patch)
tree647f374b1935e0f10915e787325021b0f48adf58 /st.c
parent211964d56ee00a7d46e251cbc150afb79138ae37 (diff)
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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 (limited to 'st.c')
-rw-r--r--st.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/st.c b/st.c
index 134e724..623376e 100644
--- 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);