Improve error message in ispell-get-decoded-string.

 lisp/textmodes/ispell.el (ispell-get-decoded-string): Make the error
 message mention the alists that need to be fixed.

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/textmodes/ispell.el b/lisp/textmodes/ispell.el
index c1fcb6013b2..bee903f0284 100644
--- a/lisp/textmodes/ispell.el
+++ b/lisp/textmodes/ispell.el
@@ -1307,7 +1307,8 @@ Protects against bogus binding of `enable-multibyte-characters' in XEmacs."
   (let* ((slot (or
                 (assoc ispell-current-dictionary ispell-local-dictionary-alist)
                 (assoc ispell-current-dictionary ispell-dictionary-alist)
-                (error "No match for the current dictionary")))
+                (error "No data for dictionary \"%s\", neither in `ispell-local-dictionary-alist' nor in `ispell-dictionary-alist'"
+                       ispell-current-dictionary)))
          (str (nth n slot)))
     (when (and (> (length str) 0)
                (not (multibyte-string-p str)))