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Applying the CBT patch of Roberto Vargas. Thanks.

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This commit is contained in:
Christoph Lohmann 2012-08-30 21:17:54 +02:00
parent 91fa81dbac
commit c58950f2ef
1 changed files with 36 additions and 23 deletions
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27
st.c
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@ -262,7 +262,7 @@ static void tinsertblankline(int);
static void tmoveto(int, int);
static void tnew(int, int);
static void tnewline(int);
static void tputtab(void);
static void tputtab(bool);
static void tputc(char*);
static void treset(void);
static int tresize(int, int);
@ -1243,7 +1243,7 @@ csihandle(void) {
case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
DEFAULT(csiescseq.arg[0], 1);
while (csiescseq.arg[0]--)
tputtab();
tputtab(1);
break;
case 'J': /* ED -- Clear screen */
sel.bx = -1;
@ -1356,7 +1356,11 @@ csihandle(void) {
DEFAULT(csiescseq.arg[0], 1);
tdeletechar(csiescseq.arg[0]);
break;
/* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
DEFAULT(csiescseq.arg[0], 1);
while (csiescseq.arg[0]--)
tputtab(0);
break;
case 'd': /* VPA -- Move to <row> */
DEFAULT(csiescseq.arg[0], 1);
tmoveto(term.c.x, csiescseq.arg[0]-1);
@ -1528,11 +1532,20 @@ strreset(void) {
}
void
tputtab(void) {
unsigned x;
tputtab(bool forward) {
unsigned x = term.c.x;
for (x = term.c.x + 1; x < term.col && !term.tabs[x]; ++x)
if (forward) {
if (x == term.col)
return;
for (++x; x < term.col && !term.tabs[x]; ++x)
/* nothing */ ;
} else {
if (x == 0)
return;
for (--x; x > 0 && !term.tabs[x]; --x)
/* nothing */ ;
}
tmoveto(x, term.c.y);
}
@ -1650,7 +1663,7 @@ tputc(char *c) {
sel.bx = -1;
switch(ascii) {
case '\t':
tputtab();
tputtab(1);
break;
case '\b':
tmoveto(term.c.x-1, term.c.y);