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-rw-r--r--util/string-util.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/util/string-util.c b/util/string-util.c
index 9e2f728f..3e7066cd 100644
--- a/util/string-util.c
+++ b/util/string-util.c
@@ -75,10 +75,12 @@ make_boolean_term (void *ctx, const char *prefix, const char *term,
int need_quoting = 0;
/* Do we need quoting? To be paranoid, we quote anything
- * containing a quote, even though it only matters at the
+ * containing a quote or '(', even though these only matter at the
* beginning, and anything containing non-ASCII text. */
+ if (! term[0])
+ need_quoting = 1;
for (in = term; *in && !need_quoting; in++)
- if (is_unquoted_terminator (*in) || *in == '"'
+ if (is_unquoted_terminator (*in) || *in == '"' || *in == '('
|| (unsigned char)*in > 127)
need_quoting = 1;