Fix initialization of minibuffer history variable, bug #17430.

	* minibuf.c (read_minibuf): Initialize histval to Qnil if unbound.
	Move the initialization up to prevent any "value void" message.

2 files changed, 13 insertions, 7 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index c1d45f1df40..027d0fc0d25 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2014-05-07  Jarek Czekalski  <jarekczek@poczta.onet.pl>
+
+        Fix initialization of minibuffer history variable (Bug#17430).
+        * minibuf.c (read_minibuf): Initialize histval to Qnil if unbound.
+        Move the initialization up to prevent any "value void" message.
+
 2014-05-06  Samuel Bronson  <naesten@gmail.com>
 
         * keyboard.c (Frecursive_edit): Ensure inc&dec of command_loop_level
diff --git a/src/minibuf.c b/src/minibuf.c
index f325381d1ca..03d6104f226 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -535,6 +535,13 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
   if (!NILP (Vminibuffer_completing_file_name))
     Vminibuffer_completing_file_name = Qlambda;
 
+  /* If variable is unbound, make it nil.  */
+  Lisp_Object histval = find_symbol_value (Vminibuffer_history_variable);
+  if (EQ (histval, Qunbound)) {
+    Fset (Vminibuffer_history_variable, Qnil);
+    histval = Qnil;
+  }
+
   if (inherit_input_method)
     {
       /* `current-input-method' is buffer local.  So, remember it in
@@ -703,13 +710,6 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
     {
       /* If the caller wanted to save the value read on a history list,
          then do so if the value is not already the front of the list.  */
-      Lisp_Object histval;
-
-      /* If variable is unbound, make it nil.  */
-
-      histval = find_symbol_value (Vminibuffer_history_variable);
-      if (EQ (histval, Qunbound))
-        Fset (Vminibuffer_history_variable, Qnil);
 
       /* The value of the history variable must be a cons or nil.  Other
          values are unacceptable.  We silently ignore these values.  */