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Fix drawing to the bottom-right corner of terminals

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* src/term.c (tty_write_glyphs_1): Renamed from tty_write_glyphs. Don't
check if writing the bottom-right corner.
(tty_write_glyphs): New function handling case of writing to the
bottom-right corner, and otherwise calling tty_write_glyphs_1.
This commit is contained in:
Gerd Möllmann 2025-03-09 10:04:41 +01:00
parent d01b7c85fe
commit 6fb68f4310
1 changed files with 26 additions and 8 deletions
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34
src/term.c
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@ -750,19 +750,13 @@ encode_terminal_code (struct glyph *src, int src_len,
/* An implementation of write_glyphs for termcap frames. */
static void
tty_write_glyphs (struct frame *f, struct glyph *string, int len)
tty_write_glyphs_1 (struct frame *f, struct glyph *string, int len)
{
struct tty_display_info *tty = FRAME_TTY (f);
tty_turn_off_insert (tty);
tty_hide_cursor (tty);
/* Don't dare write in last column of bottom line, if Auto-Wrap,
since that would scroll the whole frame on some terminals. */
if (AutoWrap (tty)
&& curY (tty) + 1 == FRAME_TOTAL_LINES (f)
&& (curX (tty) + len) == FRAME_COLS (f))
len --;
if (len <= 0)
if (len == 0)
return;
cmplus (tty, len);
@ -968,6 +962,30 @@ tty_insert_glyphs (struct frame *f, struct glyph *start, int len)
cmcheckmagic (tty);
}
static void
tty_write_glyphs (struct frame *f, struct glyph *string, int len)
{
struct tty_display_info *tty = FRAME_TTY (f);
/* Don't dare write in last column of bottom line, if Auto-Wrap,
since that would scroll the whole frame on some terminals. */
if (AutoWrap (tty)
&& curY (tty) + 1 == FRAME_TOTAL_LINES (f)
&& curX (tty) + len == FRAME_COLS (f)
&& curX (tty) < FRAME_COLS (f) - 1
&& len > 0)
{
/* Write glyphs except the first. */
int old_x = curX (tty), old_y = curY (tty);
tty_write_glyphs_1 (f, string + 1, len - 1);
/* Insert the first glyph, shifting the rest right. */
cmgoto (tty, old_y, old_x);
tty_insert_glyphs (f, string, 1);
}
else
tty_write_glyphs_1 (f, string, len);
}
/* An implementation of delete_glyphs for termcap frames. */
static void