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bug#19910: 24.4; Japanese font names are decoded incorrectly in Cygwin's
From: |
Fujii Hironori |
Subject: |
bug#19910: 24.4; Japanese font names are decoded incorrectly in Cygwin's emacs-w32 in LANG=ja_JP.UTF-8 |
Date: |
Sat, 28 Feb 2015 21:14:00 +0900 |
Thank you for reviewing my patch, Eli.
On Sat, Feb 28, 2015 at 1:03 AM, Eli Zaretskii <eliz@gnu.org> wrote:
> However, this goes too far: there's no need to replace all the
> functions with "wide" versions, only those functions that return font
> name strings from the system. For example, I don't think
> CreateFontIndirect needs to be switched to Unicode, does it? And CRT
> functions like _wcslwr and swprintf that work on wchar_t arguments
> aren't supported on Windows 9X, AFAIK, so we cannot call them. (One
> reason for using the minimum number of "wide" APIs is that we don't
> have good ways of testing the development code on Windows 9X.)
This is the code:
| 862 hfont = CreateFontIndirect (&logfont);
| (...)
| 912 = DECODE_SYSTEM (build_string (logfont.lfFaceName));
logfont.lfFaceName is ANSI text and DECODE_SYSTEM is the problem.
CreateFontIndirect should be wide.
> I would actually suggest to have a Cygwin-only branches of the code,
> where you can freely call the "wide" APIs without bothering about
> Windows 9X, since that's what the Cygwin-w32 build does elsewhere, and
> since this is a Cygwin-specific problem due to the difference between
> file-name encoding and the locale emulated by Cygwin. There are a
> bunch of macros like GUI_STR and GUI_ENCODE_FILE near the end of
> w32term.h that can be used to minimize #ifdef's to the absolute
> minimum.
If this approach is used, structs such as LOGFONT and ENUMLOGFONTEX
should be ranemed to GUI_FN(LOGFONT) and GUI_FN(ENUMLOGFONTEX).
This looks ugly.
The best way to solve this is defining _UNICODE.
Defining _UNICODE is already filed, but closed as wontfix.
#265 - Build error with _UNICODE on w32. - GNU bug report logs
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=265
If Bug#265 is resolved, this bug (Bug#19910) will be resolved automatically.
And, _UNICODE macro can be used not only for Cygwin, but also NTEmacs.