From aba6c292af347588b9c2f5d1a400a6270b5a447f Mon Sep 17 00:00:00 2001
From: Rian Hunter <rian@alum.mit.edu>
Date: Thu, 29 Jan 2015 15:00:39 -0800
Subject: [PATCH] Correct shift amount on MODE_INSERT in tputc()
When MODE_INSERT is set we'd shift characters on the same
line forward before inserting our character in tputc().
This did not account for wide characters where width != 1.
This patch makes it so we shift the correct amount.
---
st.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/st.c b/st.c
index 6a68c3c..1deb7bc 100644
--- a/st.c
+++ b/st.c
@@ -2676,8 +2676,8 @@ tputc(char *c, int len) {
gp = &term.line[term.c.y][term.c.x];
}
- if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col)
- memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph));
+ if(IS_SET(MODE_INSERT) && term.c.x+width < term.col)
+ memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
if(term.c.x+width > term.col) {
tnewline(1);