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Fix scroll bug bringed by 'vi <several_small_files>'

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and :n command then. :prev bug still exists because it syscons
bug itself, I work on it.
This commit is contained in:
Andrey A. Chernov 1994-11-21 14:16:31 +00:00
parent af3583a4e9
commit fafeaee340
1 changed files with 14 additions and 13 deletions
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27
lib/libcurses/refresh.c
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@ -750,7 +750,8 @@ scrolln(starts, startw, curs, bot, top)
if (n == 1)
goto f_nl1;
tputs(__tscroll(SF, n, 0), n, __cputchar);
__mvcur(curscr->maxy - 1, 0, bot - n + 1, 0, 1);
__mvcur(curscr->maxy - 1, 0, oy, ox, 1);
return;
}
else if (DL != NULL && top != 0) {
__mvcur(oy, ox, top, 0, 1);
@ -775,6 +776,10 @@ scrolln(starts, startw, curs, bot, top)
tputs(NL, 1, __cputchar);
else
putchar('\n');
if (bot == curscr->maxy - 1) {
__mvcur(curscr->maxy - 1, 0, oy, ox, 1);
return;
}
__mvcur(curscr->maxy - 1, 0, bot - n + 1, 0, 1);
}
else
@ -800,12 +805,15 @@ scrolln(starts, startw, curs, bot, top)
* n < 0
*/
/* Scroll down the screen. */
if (!DA && SR != NULL && bot == curscr->maxy - 1 && top == 0) {
if (!DA && (SR != NULL || sr != NULL) && bot == curscr->maxy - 1 && top == 0) {
__mvcur(oy, ox, 0, 0, 1);
if (sr != NULL && -n == 1)
goto b_sr1;
tputs(__tscroll(SR, -n, 0), -n, __cputchar);
__mvcur(0, 0, top, 0, 1);
if (SR == NULL || sr != NULL && -n == 1) {
for (i = n; i < 0; i++)
tputs(sr, 1, __cputchar);
} else
tputs(__tscroll(SR, -n, 0), -n, __cputchar);
__mvcur(0, 0, oy, ox, 1);
return;
}
else if (DL != NULL) {
__mvcur(oy, ox, bot + n + 1, 0, 1);
@ -821,13 +829,6 @@ scrolln(starts, startw, curs, bot, top)
tputs(dl, 1, __cputchar);
__mvcur(bot + n + 1, 0, top, 0, 1);
}
else if (sr != NULL && bot == curscr->maxy - 1) {
__mvcur(oy, ox, 0, 0, 1);
b_sr1:
for (i = n; i < 0; i++)
tputs(sr, 1, __cputchar);
__mvcur(0, 0, top, 0, 1);
}
else
abort();