static int file_callback(const struct option *opt, const char *arg, int unset)
{
struct grep_opt *grep_opt = opt->value;
+ int from_stdin = !strcmp(arg, "-");
FILE *patterns;
int lno = 0;
struct strbuf sb = STRBUF_INIT;
- patterns = fopen(arg, "r");
+ patterns = from_stdin ? stdin : fopen(arg, "r");
if (!patterns)
die_errno("cannot open '%s'", arg);
while (strbuf_getline(&sb, patterns, '\n') == 0) {
s = strbuf_detach(&sb, &len);
append_grep_pat(grep_opt, s, len, arg, ++lno, GREP_PATTERN);
}
- fclose(patterns);
+ if (!from_stdin)
+ fclose(patterns);
strbuf_release(&sb);
return 0;
}
test_cmp expected actual
'
+test_expect_success 'grep -f, ignore empty lines, read patterns from stdin' '
+ git grep -f - <patterns >actual &&
+ test_cmp expected actual
+'
+
cat >expected <<EOF
y:y yy
--