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Sync OpenBSD patchset 399:

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Don't run through the column unchanged case if the row was unchanged but there
were no suitable optimisations, instead make it an else to fall through to
absolute addressing.
This commit is contained in:
Tiago Cunha 2009-10-15 01:38:09 +00:00
parent 858b8b190b
commit 04db3c6211
1 changed files with 10 additions and 5 deletions
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15
tty.c
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@ -1,4 +1,4 @@
/* $Id: tty.c,v 1.148 2009-10-15 01:36:53 tcunha Exp $ */ /* $Id: tty.c,v 1.149 2009-10-15 01:38:09 tcunha Exp $ */
/* /*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -973,8 +973,12 @@ tty_cursor(struct tty *tty, u_int cx, u_int cy)
goto out; goto out;
} }
/* Row staying the same. */ /* Moving column or row. */
if (cy == thisy) { if (cy == thisy) {
/*
* Moving column only, row staying the same.
*/
/* To left edge. */ /* To left edge. */
if (cx == 0) { if (cx == 0) {
tty_putc(tty, '\r'); tty_putc(tty, '\r');
@ -1010,10 +1014,11 @@ tty_cursor(struct tty *tty, u_int cx, u_int cy)
tty_putcode1(tty, TTYC_CUF, -change); tty_putcode1(tty, TTYC_CUF, -change);
goto out; goto out;
} }
} } else if (cx == thisx) {
/*
* Moving row only, column staying the same.
*/
/* Column staying the same. */
if (cx == thisx ) {
/* One above. */ /* One above. */
if (cy != tty->rupper && if (cy != tty->rupper &&
cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {