-*-mode: text; coding: utf-8;-*-
-Copyright (C) 2002-2013 Free Software Foundation, Inc.
+Copyright (C) 2002-2014 Free Software Foundation, Inc.
See the end of the file for license conditions.
+Importing a new Unicode Standard version into Emacs
+-------------------------------------------------------------
+
+Emacs uses the following files from the Unicode Character Database
+(a.k.a. "UCD):
+
+ . UnicodeData.txt
+ . BidiMirroring.txt
+ . IVD_Sequences.txt
+
+First, these files need to be copied into admin/unidata/, and then
+Emacs should be rebuilt for them to take effect. Rebuilding Emacs
+updates several derived files elsewhere in the Emacs source tree,
+mainly in lisp/international/.
+
+When Emacs is rebuilt for the first time after importing the new
+files, pay attention to any warning or error messages. In particular,
+admin/unidata/unidata-gen.el will complain if UnicodeData.txt defines
+new bidirectional attributes of characters, because unidata-gen.el,
+bidi.c and dispextern.h need to be updated in that case; failure to do
+so will cause aborts in redisplay.
+
+Next, review the changes in UnicodeData.txt vs the previous version
+used by Emacs. Any changes, be it introduction of new scripts or
+addition of codepoints to existing scripts, need corresponding changes
+in the data used for filling char-script-table, see characters.el
+around line 1300. Other databases and settings in characters.el, such
+as the data for char-width-table, might also need changes.
+
+Any new scripts added by UnicodeData.txt will also need updates to
+script-representative-chars defined in fontset.el. Other databases in
+fontset.el might also need to be updated as needed.
+
Problems, fixmes and other unicode-related issues
-------------------------------------------------------------
operating in some other language environment.
etc/tutorials/TUTORIAL.ja
- etc/tutorials/TUTORIAL.ko
leim/quail/cyril-jis.el
leim/quail/hanja-jis.el
- leim/quail/hanja.el
- leim/quail/hanja3.el
leim/quail/japanese.el
leim/quail/py-punct.el
leim/quail/pypunct-b5.el
- leim/quail/symbol-ksc.el
lisp/international/ja-dic-cnv.el
lisp/international/ja-dic-utl.el
lisp/international/kinsoku.el
lisp/language/japanese.el
lisp/term/x-win.el
+ * utf-8-emacs
+
These files contain characters that cannot be encoded in UTF-8.
leim/quail/tibetan.el