Serialise non-default hash table rehash thresholds correctly; use this. src/ChangeLog addition: 2009-12-17 Aidan Kehoe <kehoea@parhasard.net> * elhash.c (HASH_TABLE_DEFAULT_REHASH_THRESHOLD): New macro, giving a default value for a hash table's rehash threshold given its size and test function. (print_hash_table): Print the hash table's rehash threshold if it has a non-default value. Ditto for its rehash size. (Fmake_hash_table): Supply the keyword arguments in a format understood by #'function-arglist. lisp/ChangeLog addition: 2009-12-17 Aidan Kehoe <kehoea@parhasard.net> * mule/make-coding-system.el (fixed-width-create-decode-encode-tables): Use a rehash threshold of 0.999 for this hash table, now that hash table rehash thresholds are serialised correctly; these hash tables will never be resized, and it's not even that important that they are *that* fast, for most of the coding systems they're used a minority of the time.

--- a/src/ChangeLog	Thu Dec 17 13:15:04 2009 +0000
+++ b/src/ChangeLog	Thu Dec 17 13:50:45 2009 +0000
@@ -1,3 +1,13 @@
+2009-12-17  Aidan Kehoe  <kehoea@parhasard.net>
+
+	* elhash.c (HASH_TABLE_DEFAULT_REHASH_THRESHOLD):
+	New macro, giving a default value for a hash table's rehash
+	threshold given its size and test function. 
+	(print_hash_table): Print the hash table's rehash threshold if it
+	has a non-default value. Ditto for its rehash size. 
+	(Fmake_hash_table): Supply the keyword arguments in a format
+	understood by #'function-arglist. 
+
 2009-12-17  Aidan Kehoe  <kehoea@parhasard.net>
 
 	* alloc.c (resize_string):