--- a/mcabber/mcabber/screen.c	Sat Sep 14 00:29:20 2013 +0200
+++ b/mcabber/mcabber/screen.c	Sun Sep 29 10:24:24 2013 +0200
@@ -3441,7 +3441,7 @@
 
   if (c == inputLine && *c == COMMAND_CHAR && old != c+1) {
       c = next_char(c);
-  } else if (c != inputLine || iswblank(get_char(c))) {
+  } else if (c != inputLine || (iswblank(get_char(c)) && !spaceallowed)) {
     if ((c < prev_char(ptr_inputline, inputLine)) && (!iswalnum(get_char(c))))
       c = next_char(c);
   }