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If foo doesn't exist and can't be expanded in #{?foo,a,b} then assume it

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is false.
This commit is contained in:
nicm 2018-05-29 09:10:30 +00:00
parent c177a627d2
commit d1f5142dab
1 changed files with 12 additions and 2 deletions
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14
format.c
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@ -1042,8 +1042,18 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
*ptr = '\0';
found = format_find(ft, copy + 1, modifiers);
if (found == NULL)
if (found == NULL) {
/*
* If the conditional not found, try to expand it. If
* the expansion doesn't have any effect, then assume
* false.
*/
found = format_expand(ft, copy + 1);
if (strcmp(found, copy + 1) == 0) {
free(found);
found = xstrdup("");
}
}
if (format_choose(ptr + 1, &left, &right) != 0)
goto fail;
@ -1098,8 +1108,8 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
value = new;
}
/* Expand the buffer and copy in the value. */
done:
/* Expand the buffer and copy in the value. */
valuelen = strlen(value);
while (*len - *off < valuelen + 1) {
*buf = xreallocarray(*buf, 2, *len);