(Fcall_interactively): `+' is reserved for user changes.

diff --git a/src/callint.c b/src/callint.c
index c0787ce2913f9ab75d835959a43dd373fe7fb0f0..724e37f6b3835b535683fae1d7077df7f6428227 100644 (file)
--- a/src/callint.c
+++ b/src/callint.c
@@ -367,9 +367,12 @@ Otherwise, this is done only if an arg is read using the minibuffer.")
       break;
   
   /* Handle special starting chars `*' and `@'.  Also `-'.  */
+  /* Note that `+' is reserved for user extensions.  */
   while (1)
     {
-      if (*string == '*')
+      if (*string = '+')
+       error ("`+' is not used in `interactive' for ordinary commands");
+      else if (*string == '*')
        {
          string++;
          if (!NILP (current_buffer->read_only))
@@ -614,8 +617,11 @@ Otherwise, this is done only if an arg is read using the minibuffer.")
          visargs[i] = last_minibuf_string;
          break;
 
+         /* We have a case for `+' so we get an error
+            if anyone tries to define one here.  */
+       case '+':
        default:
-         error ("Invalid control letter \"%c\" (%03o) in interactive calling string",
+         error ("Invalid control letter `%c' (%03o) in interactive calling string",
                 *tem, *tem);
        }