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From effb30989015cf760aa152de79ff51212caec91a Mon Sep 17 00:00:00 2001
From: Zhang Boyang <zhangboyang.id@gmail.com>
Date: Wed, 25 May 2022 13:45:14 +0800
Subject: [PATCH v2 6/8] Fix character occasionally disappears from right edge
of screen
Sometimes when a line is full, the right most character disappears. The
is because term->xpos may equals to term->xsize and this condition
confuses some code. Reported by AddressSanitizer.
---
bogl-term.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/bogl-term.c b/bogl-term.c
index 1f68523..2d35d1d 100644
--- a/bogl-term.c
+++ b/bogl-term.c
@@ -283,7 +283,7 @@ static void
clear_left (struct bogl_term *term)
{
int j, i = SCR(term->xpos, term->ypos);
- if (!term->screen[i])
+ if (term->xpos < term->xsize && !term->screen[i])
{
for (j = i - 1; !term->screen[j]; j--)
{
@@ -577,7 +577,7 @@ bogl_term_out (struct bogl_term *term, char *s, int n)
if (wc == 'K')
{ /* el=\E[K */
- if (term->state == 1 && !term->arg[0])
+ if (term->state == 1 && !term->arg[0] && term->xpos < term->xsize)
{
clear_left (term);
for (i = SCR (term->xpos, term->ypos); i < SCR (term->xsize, term->ypos); i++)
--
2.30.2
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