static void
asyn0(struct wordent *p1, struct wordent *p2)
{
struct wordent *p;
int l;
l = 0;
for (p = p1; p != p2; p = p->next)
switch (p->word[0]) {
case '(':
l++;
continue;
case ')':
l--;
if (l < 0)
stderror(ERR_TOOMANYRP);
continue;
case '>':
if (p->next != p2 && eq(p->next->word, STRand))
p = p->next;
continue;
case '&':
case '|':
case ';':
case '\n':
if (l != 0)
continue;
asyn3(p1, p);
asyntax(p->next, p2);
return;
}
if (l == 0)
asyn3(p1, p2);
}
void
alias(struct wordent *lex)
{
jmp_buf osetexit;
aleft = ALEFT;
hleft = HLEFT;
getexit(osetexit);
(void) setexit();
if (haderr) {
resexit(osetexit);
reset();
}
if (--aleft == 0)
stderror(ERR_ALIASLOOP);
asyntax(lex->next, lex);
resexit(osetexit);
}
