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35953: fix handling of command substitution in math context

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Barton E. Schaefer 2015-07-29 22:36:45 -07:00
parent 6fd8872d58
commit c0a80171ee
3 changed files with 16 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2015-07-29 Barton E. Schaefer <schaefer@zsh.org>
* 35953: Src/lex.c, Test/A01grammar.ztst: fix handling of command
substitution in math context, particularly in "for ((...))"
2015-07-28 Barton E. Schaefer <schaefer@zsh.org>
* 35947: Etc/zsh-development-guide: update discussion of module

6
Src/lex.c
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@ -1388,7 +1388,7 @@ dquote_parse(char endchar, int sub)
{
int pct = 0, brct = 0, bct = 0, intick = 0, err = 0;
int c;
int math = endchar == ')' || endchar == ']';
int math = endchar == ')' || endchar == ']' || infor;
int zlemath = math && zlemetacs > zlemetall + addedx - inbufct;
while (((c = hgetc()) != endchar || bct ||
@ -1995,8 +1995,10 @@ skipcomm(void)
#else
char *new_tokstr;
int new_lexstop, new_lex_add_raw;
int save_infor = infor;
struct lexbufstate new_lexbuf;
infor = 0;
cmdpush(CS_CMDSUBST);
SETPARBEGIN
add(Inpar);
@ -2065,6 +2067,7 @@ skipcomm(void)
* the recursive parsing.
*/
lexflags &= ~LEXFLAGS_ZLE;
dbparens = 0; /* restored by zcontext_restore_partial() */
if (!parse_event(OUTPAR) || tok != OUTPAR)
lexstop = 1;
@ -2111,6 +2114,7 @@ skipcomm(void)
if (!lexstop)
SETPAREND
cmdpop();
infor = save_infor;
return lexstop;
#endif

6
Test/A01grammar.ztst
View file

@ -182,6 +182,12 @@
>1
>2
for (( $(true); ; )); do break; done
for (( ; $(true); )); do break; done
for (( ; ; $(true) )); do break; done
for (( ; $((1)); )); do break; done
0:regression test, nested cmdsubst in arithmetic `for' loop
for keyvar valvar in key1 val1 key2 val2; do
print key=$keyvar val=$valvar
done