From c6129f9c09ddc08d24640eeff1aa3082535f13c1 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Sat, 8 Nov 2014 12:50:38 +0000
Subject: [PATCH] Empty strings should be false too for #{?}, from Marc Finet.

---
 format.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/format.c b/format.c
index 441e61be..72991047 100644
--- a/format.c
+++ b/format.c
@@ -236,7 +236,8 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
 		*ptr = '\0';
 
 		value = format_find(ft, copy + 1);
-		if (value != NULL && (value[0] != '0' || value[1] != '\0')) {
+		if (value != NULL && *value != '\0' &&
+		    (value[0] != '0' || value[1] != '\0')) {
 			value = ptr + 1;
 			ptr = strchr(value, ',');
 			if (ptr == NULL)