Merge from emacs-24; up to 2012-12-25T11:37:21Z!dmantipov@yandex.ru

[gnu-emacs] / admin / notes / unicode

diff --git a/admin/notes/unicode b/admin/notes/unicode
index ce7d3732f03f0035040a4b84c795838d0131cad1..0654036d3646c9307b06c22d5df630c93260a17f 100644 (file)
--- a/admin/notes/unicode
+++ b/admin/notes/unicode
@@ -1,6 +1,6 @@
-                                            -*-mode: text; coding: latin-1;-*-
+                                            -*-mode: text; coding: utf-8;-*-

 
 

-Copyright (C) 2002-2011  Free Software Foundation, Inc.
+Copyright (C) 2002-2013 Free Software Foundation, Inc.

 See the end of the file for license conditions.
 
 Problems, fixmes and other unicode-related issues
 See the end of the file for license conditions.
 
 Problems, fixmes and other unicode-related issues


@@ -12,9 +12,9 @@ regard to completeness.
 
  * SINGLE_BYTE_CHAR_P returns true for Latin-1 characters, which has
    undesirable effects.  E.g.:
 
  * SINGLE_BYTE_CHAR_P returns true for Latin-1 characters, which has
    undesirable effects.  E.g.:

-   (multibyte-string-p (let ((s "x")) (aset s 0 ?£) s)) => nil
-   (multibyte-string-p (concat [?£])) => nil
-   (text-char-description ?£) => "M-#"
+   (multibyte-string-p (let ((s "x")) (aset s 0 ?£) s)) => nil
+   (multibyte-string-p (concat [?£])) => nil
+   (text-char-description ?£) => "M-#"

 
        These examples are all fixed by the change of 2002-10-14, but
        there still exist questionable SINGLE_BYTE_CHAR_P in the
 
        These examples are all fixed by the change of 2002-10-14, but
        there still exist questionable SINGLE_BYTE_CHAR_P in the


@@ -62,14 +62,6 @@ regard to completeness.
        dumped emacs.  But, those maps (char tables) generated while
        temacs is running can't be removed from the dumped emacs.
 
        dumped emacs.  But, those maps (char tables) generated while
        temacs is running can't be removed from the dumped emacs.
 

- * Translation tables for {en,de}code currently aren't supported.
-
-       This should be fixed by the changes of 2002-10-14.
-
- * Defining CCL coding systems currently doesn't work.
-
-       This should be fixed by the changes of 2003-01-30.
-

  * iso-2022 charsets get unified on i/o.
 
        With the change on 2003-01-06, decoding routines put `charset'
  * iso-2022 charsets get unified on i/o.
 
        With the change on 2003-01-06, decoding routines put `charset'


@@ -85,11 +77,9 @@ regard to completeness.
    spelling and calendar, but that's not a Unicode issue.)
 
  * Handle Unicode combining characters usefully, e.g. diacritics, and
    spelling and calendar, but that's not a Unicode issue.)
 
  * Handle Unicode combining characters usefully, e.g. diacritics, and

-   handle more scripts specifically (à la Devanagari).  There are
+   handle more scripts specifically (à la Devanagari).  There are

    issues with canonicalization.
 
    issues with canonicalization.
 

- * Bidi is a separate issue with no support currently.
-

  * We need tabular input methods, e.g. for maths symbols.  (Not
    specific to Unicode.)
 
  * We need tabular input methods, e.g. for maths symbols.  (Not
    specific to Unicode.)
 


@@ -102,29 +92,67 @@ regard to completeness.
    worry about what happens when double-width charsets covering
    non-CJK characters are unified.
 
    worry about what happens when double-width charsets covering
    non-CJK characters are unified.
 

- * Emacs 20/21 .elc files are currently not loadable.  It may or may
-   not be possible to do this properly.
+ * There are type errors lurking, e.g. in
+   Fcheck_coding_systems_region.  Define ENABLE_CHECKING to find them.

 
 

-       With the change on 2002-07-24, elc files generated by Emacs
-       20.3 and later are correctly loaded (including those
-       containing multibyte characters and compressed).  But, elc
-       files generated by 20.2 and the primer are still not loadable.
-       Is it really worth working on it?
+ * Old auto-save files, and similar files, such as Gnus drafts,
+   containing non-ASCII characters probably won't be re-read correctly.

 
 

- * Rmail won't work with non-ASCII text.  Encoding issues for Babyl
-   files need sorting out, but rms says Babyl will go before this is
-   released.

 
 

- * Gnus still needs some attention, and we need to get changes
-   accepted by Gnus maintainers...
+Source file encoding
+--------------------

 
 

- * There are type errors lurking, e.g. in
-   Fcheck_coding_systems_region.  Define ENABLE_CHECKING to find them.
+Most Emacs source files are encoded in UTF-8 (or in ASCII, which is a
+subset), but there are a few exceptions, listed below.  Perhaps
+someday these files will be converted to UTF-8, for convenience when
+using tools like 'grep -r', but this might need nontrivial changes to
+the build process.

 
 

- * You can grep the code for lots of fixmes.
+ * chinese-big5

 
 

- * Old auto-save files, and similar files, such as Gnus drafts,
-   containing non-ASCII characters probably won't be re-read correctly.
+       leim/CXTERM-DIC/4Corner.tit
+       leim/CXTERM-DIC/ARRAY30.tit
+       leim/CXTERM-DIC/ECDICT.tit
+       leim/CXTERM-DIC/ETZY.tit
+       leim/CXTERM-DIC/PY-b5.tit
+       leim/CXTERM-DIC/Punct-b5.tit
+       leim/CXTERM-DIC/QJ-b5.tit
+       leim/CXTERM-DIC/ZOZY.tit
+       leim/MISC-DIC/CTLau-b5.html
+       leim/MISC-DIC/cangjie-table.b5
+
+ * chinese-iso-8bit
+
+       leim/CXTERM-DIC/CCDOSPY.tit
+       leim/CXTERM-DIC/Punct.tit
+       leim/CXTERM-DIC/QJ.tit
+       leim/CXTERM-DIC/SW.tit
+       leim/CXTERM-DIC/TONEPY.tit
+       leim/MISC-DIC/pinyin.map
+       leim/MISC-DIC/CTLau.html
+       leim/MISC-DIC/ziranma.cin
+
+ * iso-latin-2
+
+       etc/refcards/cs-refcard.tex
+       etc/refcards/sk-survival.tex
+       etc/refcards/cs-survival.tex
+       etc/refcards/cs-dired-ref.tex
+       etc/refcards/sk-dired-ref.tex
+       etc/refcards/sk-refcard.tex
+
+ * japanese-iso-8bit
+
+       leim/SKK-DIC/SKK-JISYO.L
+       leim/ja-dic/ja-dic.el
+
+ * japanese-shift-jis
+
+       admin/charsets/mapfiles/cns2ucsdkw.txt
+
+ * no-conversion
+
+       lib-src/testfile

 
 \f
 This file is part of GNU Emacs.
 
 \f
 This file is part of GNU Emacs.