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If the vertical cursor movement crosses the scroll region, CUU and CUD
shouldn't be used even if VPA isn't present - in that case CUP should be used.
This commit is contained in:
parent
56157444de
commit
eb9826f65d
13
tty.c
13
tty.c
@ -1027,15 +1027,16 @@ tty_cursor(struct tty *tty, u_int cx, u_int cy)
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change = thisy - cy; /* +ve up, -ve down */
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/*
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* Use VPA if change is larger than absolute or if this change
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* Try to use VPA if change is larger than absolute or if this change
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* would cross the scroll region, otherwise use CUU/CUD.
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*/
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if ((abs(change) > cy ||
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if (abs(change) > cy ||
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(change < 0 && cy - change > tty->rlower) ||
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(change > 0 && cy - change < tty->rupper)) &&
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tty_term_has(term, TTYC_VPA)) {
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tty_putcode1(tty, TTYC_VPA, cy);
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goto out;
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(change > 0 && cy - change < tty->rupper)) {
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if (tty_term_has(term, TTYC_VPA)) {
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tty_putcode1(tty, TTYC_VPA, cy);
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goto out;
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}
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} else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
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tty_putcode1(tty, TTYC_CUU, change);
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goto out;
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