GNU bug report logs - #61619
30.0.50; Emacs on Android cannot type or display CJK characters

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "LeiYiXia29 <at> outlook.com" <LeiYiXia29 <at> outlook.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; Emacs on Android cannot type or display CJK characters
Date: Sun, 19 Feb 2023 12:25:11 +0800

Emacs on Android cannot type or display CKJ characters.

When I use a pinyin input method. Emacs recognizes CJK characters as <dead-circumflex> keys. Then it displays messages like "<dead-circumflex> RET is undefined".

Emacs cannot display CJK characters as well.

安卓上的Emacs无法输入中文，也无法显示中文。

用华为输入法（com.baidu.input_huawei）的拼音输入中文时会识别成<dead-circumflex>按键，导致无法输入中文

同时中文字符也无法正常显示。


In GNU Emacs 30.0.50 (build 1, armv7a-unknown-linux-android22) of 2023-02-18 built on localhost Configured using: 'configure --with-png=yes --with-webp=yes --with-gif=yes --with-json=ifavailable --with-jpeg=yes --with-xml2=yes --with-sqlite3=yes --with-gnutls=ifavailable --with-tiff=yes 'CFLAGS= -Werror=implicit-function-declaration'' Configured features: NOTIFY INOTIFY PDUMPER SECCOMP ZLIB Important settings: locale-coding-system: nil Major mode: Fundamental Minor modes in effect: icomplete-mode: t fido-mode: t tooltip-mode: t global-eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t blink-cursor-mode: t buffer-read-only: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message mailcap yank-media puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search time-date mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils modus-vivendi-tinted-theme modus-themes cl-macs gv subr-x icomplete cl-loaddefs cl-lib cus-load rmc iso-transl tooltip cus-start cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel android-win term/common-win ls-lisp touch-screen tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote inotify android multi-tty make-network-process emacs) Memory information: ((conses 8 104634 11746) (symbols 24 8598 0) (strings 16 19237 1931) (string-bytes 1 487952) (vectors 8 11352) (vector-slots 4 159499 20358) (floats 8 66 224) (intervals 28 495 54) (buffers 568 11))

来自我的华为手机

Message #8 received at 61619 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: LeiYiXia29 <at> outlook.com
Cc: 61619 <at> debbugs.gnu.org
Subject: Re: bug#61619: 30.0.50; Emacs on Android cannot type or display CJK
 characters
Date: Sun, 19 Feb 2023 19:06:16 +0800

[Message part 1 (text/plain, inline)]

"LeiYiXia29 <at> outlook.com" <LeiYiXia29 <at> outlook.com> writes:

> 安卓上的Emacs无法输入中文，也无法显示中文。
>
> 用华为输入法（com.baidu.input_huawei）的拼音输入中文时会识别成<dead-circumflex>按键，导致无法输入中文

The problem is twofold: firstly, you are using an outdated build from
F-Droid.

> 同时中文字符也无法正常显示。

Secondly, you need to install a suitable Chinese TrueType font to
~/fonts.  Of course, this will only work if you update Emacs.

Most of my testing was done with PingFang SC.  I am attaching a version
instructed with ttfautohint.

[PingFangSC.ttf (font/ttf, attachment)]

Message #11 received at 61619 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 61619 <at> debbugs.gnu.org, LeiYiXia29 <at> outlook.com
Subject: Re: bug#61619: 30.0.50;
 Emacs on Android cannot type or display CJK characters
Date: Sun, 19 Feb 2023 14:07:07 +0200

> Cc: 61619 <at> debbugs.gnu.org
> Date: Sun, 19 Feb 2023 19:06:16 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> Most of my testing was done with PingFang SC.  I am attaching a version
> instructed with ttfautohint.

That attachment file was 21MB large!  Please don't post such large
attachments in public responses, please either upload it to some
place, or send off-list to people who ask for that explicitly.

Message #14 received at 61619 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 61619 <at> debbugs.gnu.org, LeiYiXia29 <at> outlook.com
Subject: Re: bug#61619: 30.0.50; Emacs on Android cannot type or display CJK
 characters
Date: Sun, 19 Feb 2023 20:19:43 +0800

Eli Zaretskii <eliz <at> gnu.org> writes:

>> Cc: 61619 <at> debbugs.gnu.org
>> Date: Sun, 19 Feb 2023 19:06:16 +0800
>> From:  Po Lu via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
>> 
>> Most of my testing was done with PingFang SC.  I am attaching a version
>> instructed with ttfautohint.
>
> That attachment file was 21MB large!  Please don't post such large
> attachments in public responses, please either upload it to some
> place, or send off-list to people who ask for that explicitly.

I didn't realize, my bad.  I had fixed Emacs to mmap fonts into memory
and somehow concluded that the actual memory usage of all of that font's
tables afterwards (~2 MB) was the actual size of the font file.

Sorry about that.

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