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Konsole incorrectly ignores SU (CSI S) if the parameter is bigger than

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the scroll region, so clamp it. Reported by Moritz Bunkus.
This commit is contained in:
nicm 2017-04-28 17:58:44 +00:00
parent c12711affd
commit 54e2205e54
1 changed files with 13 additions and 4 deletions

17
tty.c
View File

@ -1117,7 +1117,7 @@ void
tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
u_int i;
u_int i, lines;
if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
tty_fake_bce(tty, wp, 8) ||
@ -1131,12 +1131,21 @@ tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
tty_margin_pane(tty, ctx);
if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
/*
* Konsole has a bug where it will ignore SU if the parameter is more
* than the height of the scroll region. Clamping the parameter doesn't
* hurt in any case.
*/
lines = tty->rlower - tty->rupper;
if (lines > ctx->num)
lines = ctx->num;
if (lines == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
tty_cursor(tty, tty->rright, tty->rlower);
for (i = 0; i < ctx->num; i++)
for (i = 0; i < lines; i++)
tty_putc(tty, '\n');
} else
tty_putcode1(tty, TTYC_INDN, ctx->num);
tty_putcode1(tty, TTYC_INDN, lines);
}
void