* ext/readline/readline.c (readline_s_set_completion_append_character):

  accept nil.  [ruby-core:03765]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7316 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 4 deletions

diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 8812524a67..e3a1dcbf02 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -204,11 +204,16 @@ readline_s_set_completion_append_character(self, str)
 {
 #ifdef READLINE_21_OR_LATER
     rb_secure(4);
-    SafeStringValue(str);
-    if (NIL_P(str) || RSTRING(str)->len == 0) {
+    if (NIL_P(str)) {
 	rl_completion_append_character = '\0';
-    } else {
-	rl_completion_append_character = RSTRING(str)->ptr[0];
+    }
+    else {
+	SafeStringValue(str);
+	if (RSTRING(str)->len == 0) {
+	    rl_completion_append_character = '\0';
+	} else {
+	    rl_completion_append_character = RSTRING(str)->ptr[0];
+	}
     }
 
     return self;