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

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.
pull/1/head
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;