X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/ad404f1a4f1cf0cdb50967fbe78dc6bdfb7f21ae..ff56ba1f4fa5b785ed6d845f89934dde0e036c32:/src/casetab.c

diff --git a/src/casetab.c b/src/casetab.c
index d34ca473a9..89f9287c75 100644
--- a/src/casetab.c
+++ b/src/casetab.c
@@ -1,6 +1,6 @@
 /* GNU Emacs routines to deal with case tables.
    Copyright (C) 1993, 1994, 2002, 2003, 2004, 
-                 2005 Free Software Foundation, Inc.
+                 2005, 2006 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -97,8 +97,9 @@ A case table is a char-table which maps characters
 to their lower-case equivalents.  It also has three \"extra\" slots
 which may be additional char-tables or nil.
 These slots are called UPCASE, CANONICALIZE and EQUIVALENCES.
-UPCASE maps each character to its upper-case equivalent;
- if lower and upper case characters are in 1-1 correspondence,
+UPCASE maps each non-upper-case character to its upper-case equivalent.
+ (The value in UPCASE for an upper-case character is never used.)
+ If lower and upper case characters are in 1-1 correspondence,
  you may use nil and the upcase table will be deduced from DOWNCASE.
 CANONICALIZE maps each character to a canonical equivalent;
  any two characters that are related by case-conversion have the same