Be clearer in our error messages, #'canonicalize-inst-pair, #'canonicalize-spec lisp/ChangeLog addition: 2010-08-15 Aidan Kehoe <kehoea@parhasard.net> * specifier.el (canonicalize-inst-pair, canonicalize-spec): If a specifier tag set is correct, but an instantiator is not in an accepted format, don't error with the message "Invalid specifier tag set". Also, when we error, use error-symbols, for better structured error handling and more ease when testing. tests/ChangeLog addition: 2010-08-15 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: (not, not, invalid-argument, invalid-argument): Check that error messages from the image specifier instantiator code are clearer than they used to be.

--- a/tests/ChangeLog	Sun Aug 15 13:29:10 2010 +0100
+++ b/tests/ChangeLog	Sun Aug 15 15:42:45 2010 +0100
@@ -1,3 +1,10 @@
+2010-08-15  Aidan Kehoe  <kehoea@parhasard.net>
+
+	* automated/lisp-tests.el:
+	(not, not, invalid-argument, invalid-argument):
+	Check that error messages from the image specifier instantiator
+	code are clearer than they used to be.
+
 2010-08-15  Aidan Kehoe  <kehoea@parhasard.net>
 
 	* automated/lisp-tests.el: