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better cr handling

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This commit is contained in:
rsc 2005-07-18 00:01:56 +00:00
parent ac39f01949
commit dcc0b3ca1d
1 changed files with 9 additions and 2 deletions
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11
src/cmd/9term/9term.c
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@ -1136,6 +1136,7 @@ conswrite(char *p, int n)
void
runewrite(Rune *r, int n)
{
static int havecr;
int i;
uint initial;
uint q0, q1;
@ -1146,8 +1147,13 @@ runewrite(Rune *r, int n)
if(n == 0)
return;
/* get rid of backspaces */
/* process trailing \r from previous write */
initial = 0;
if(havecr && *r != '\r' && *r != '\n')
initial = bswidth(0x15, t.qh, 0);
havecr = 0;
/* get rid of backspaces */
p = q = r;
for(i=0; i<n; i++) {
if(*p == '\b') {
@ -1167,7 +1173,8 @@ runewrite(Rune *r, int n)
q--;
if(q==r)
initial = bswidth(0x15, t.qh, 0);
}
}else if(i == n-1)
havecr = 1;
} else if(*p)
*q++ = *p;
p++;