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mk: handle rc blocks in shell quote

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this is so we cna handle:

foo = `{echo `{echo bar}}

thanks to erik and friedrich psiorz on 9fans for
bringing the issue up.
This commit is contained in:
cinap_lenrek 2013-09-07 18:42:40 +02:00
parent 12596736e9
commit ebf2c5cd69
1 changed files with 5 additions and 2 deletions
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7
sys/src/cmd/mk/lex.c
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@ -67,7 +67,7 @@ eof:
static int
bquote(Biobuf *bp, Bufblock *buf)
{
int c, line, term;
int c, line, term, depth;
int start;
line = mkinline;
@ -80,9 +80,12 @@ bquote(Biobuf *bp, Bufblock *buf)
} else
term = '`'; /* sh style */
depth = 1;
start = buf->current-buf->start;
for(;c > 0; c = nextrune(bp, 0)){
if(c == term){
if(c == '{' && term == '}')
depth++;
if(c == term && --depth == 0){
insert(buf, '\n');
insert(buf,0);
buf->current = buf->start+start;