# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1455526005 -7200
# Node ID d58b92ef5c03ec6a1a9050e29dfe7e8837413633
# Parent  723a69185102be4287b26516249ac30c89f6b1ec
Improve documentation.

diff -r 723a69185102 -r d58b92ef5c03 th_string.c
--- a/th_string.c	Mon Feb 15 10:45:05 2016 +0200
+++ b/th_string.c	Mon Feb 15 10:46:45 2016 +0200
@@ -49,9 +49,9 @@
 }
 
 
-/* Like strdup, but trims whitespace from the string
- * according to specified flags. See TH_TRIM_* in
- * th_string.h
+/* Like strdup, but trims whitespace from the string according to specified flags.
+ * See TH_TRIM_* in th_string.h. If the resulting string would be empty (length 0),
+ * NULL is returned.
  */
 static inline char * th_strdup_trim_do(const char *src, size_t len, const int flags)
 {