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Some terminals don't correctly clear their let's-wrap flag after changing the

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scroll region (which moves the cursor to 0,0). This means that if the cursor
was at the edge of the screen, any further output after scroll region change
incorrectly causes a line wrap. Add a workaround to move the cursor to position
0 if it is at the screen edge before changing scroll region.
This commit is contained in:
Nicholas Marriott 2009-10-21 09:36:53 +00:00
parent 7825871d6a
commit 683ddbc466
1 changed files with 9 additions and 0 deletions
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9
tty.c
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@ -955,6 +955,15 @@ tty_region(struct tty *tty, u_int rupper, u_int rlower)
tty->rupper = rupper;
tty->rlower = rlower;
/*
* Some terminals (such as PuTTY) do not correctly reset the cursor to
* 0,0 if it is beyond the last column (they do not reset their wrap
* flag so further output causes a line feed). As a workaround, do an
* explicit move to 0 first.
*/
if (tty->cx >= tty->sx)
tty_cursor(tty, 0, tty->cy);
tty->cx = 0;
tty->cy = 0;