bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

[Nichtmein Name]

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 Steps to reproduce:
1) Launch emacs -Q
2) M-x set-input-method german-prefix
3) Type " (double quote) followed by S (capital s)

Expected behavior:
Emacs should insert ẞ, that is, a capital sharp S (which is an official
letter in Germany
as of 2017, see https://en.wikipedia.org/wiki/Capital_%E1%BA%9E )

Actual behavior:
Emacs inserts the text literally.



In GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.26)
of 2018-02-09 built on bisson
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
Configured using:
'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
--localstatedir=/var --with-x-toolkit=gtk3 --with-xft --with-modules
'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
-fno-plt' CPPFLAGS=-D_FORTIFY_SOURCE=2
LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 MODULES

Important settings:
value of $LC_ALL: en_US.UTF-8
value of $LC_COLLATE: C
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: @im=xim
locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
tooltip-mode: t
global-eldoc-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
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message dired format-spec rfc822 mml
mml-sec password-cache epg epg-config gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util help-fns help-mode easymenu
cl-loaddefs pcase cl-lib mail-prsvr mail-utils time-date mule-util
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment elisp-mode lisp-mode prog-mode register
page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core frame cl-generic 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 charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 86355 6655)
(symbols 48 19767 0)
(miscs 40 50 121)
(strings 32 14299 4549)
(string-bytes 1 407478)
(vectors 16 11747)
(vector-slots 8 430579 4683)
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bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

[Eli Zaretskii]

> From: Nichtmein Name <cgeek97@gmail.com>
> Date: Thu, 29 Mar 2018 15:12:19 +0200
> 
> Steps to reproduce: 
> 1) Launch emacs -Q 
> 2) M-x set-input-method german-prefix 
> 3) Type " (double quote) followed by S (capital s) 
> 
> Expected behavior: 
> Emacs should insert ẞ, that is, a capital sharp S (which is an official letter in Germany 
> as of 2017, see https://en.wikipedia.org/wiki/Capital_%E1%BA%9E ) 
> 
> Actual behavior: 
> Emacs inserts the text literally. 

Thank you for your report.

In general, what you can expect from an Emacs input method is shown
when you type "C-h C-\ RET".  As you can see, this letter was not
supported by the german-prefix and german-postfix input methods.  I
now added it on the master branch.

bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

[Robert Pluim]

Eli Zaretskii <eliz@gnu.org> writes:

> In general, what you can expect from an Emacs input method is shown
> when you type "C-h C-\ RET".  As you can see, this letter was not
> supported by the german-prefix and german-postfix input methods.  I
> now added it on the master branch.

Would it make sense to also add it to all the latin-* methods that
currently define a mapping for ß ?

Robert

bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: eliz@gnu.org,  cgeek97@gmail.com
> Gmane-Reply-To-List: yes
> Date: Fri, 30 Mar 2018 10:07:44 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > In general, what you can expect from an Emacs input method is shown
> > when you type "C-h C-\ RET".  As you can see, this letter was not
> > supported by the german-prefix and german-postfix input methods.  I
> > now added it on the master branch.
> 
> Would it make sense to also add it to all the latin-* methods that
> currently define a mapping for ß ?

Which ones?  Sharp s is a German-only thing (AFAIK), so IMO it makes
sense to add this only to input methods that specifically support the
German language.

bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

[Robert Pluim]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Robert Pluim <rpluim@gmail.com>
>> Cc: eliz@gnu.org,  cgeek97@gmail.com
>> Gmane-Reply-To-List: yes
>> Date: Fri, 30 Mar 2018 10:07:44 +0200
>> 
>> Eli Zaretskii <eliz@gnu.org> writes:
>> 
>> > In general, what you can expect from an Emacs input method is shown
>> > when you type "C-h C-\ RET".  As you can see, this letter was not
>> > supported by the german-prefix and german-postfix input methods.  I
>> > now added it on the master branch.
>> 
>> Would it make sense to also add it to all the latin-* methods that
>> currently define a mapping for ß ?
>
> Which ones?  Sharp s is a German-only thing (AFAIK), so IMO it makes
> sense to add this only to input methods that specifically support the
> German language.

grep ß '*.el' gives:

czech.el:84: ("\\s" ?ß)
czech.el:88: ("\\S" ?ß)
czech.el:191: ("\\s" ?ß)
czech.el:195: ("\\S" ?ß)
czech.el:302: ("++s" ?ß)
czech.el:325: ("++S" ?ß)
czech.el:381: ("++s" ?ß)
czech.el:404: ("++S" ?ß)
czech.el:481: ("=S" ?ß)
czech.el:505: ("=s" ?ß)
latin-alt.el:126: ("s/" ?ß)
latin-alt.el:306: ("s/" ?ß)
latin-alt.el:493: ("s/" ?ß)
latin-alt.el:677: ("s/" ?ß)
latin-alt.el:856: ("s/" ?ß)
latin-alt.el:1520: ("s/" ?ß)
latin-ltx.el:166: ("\\ss" ?ß) ;; ("{\\ss}" ?ß)
latin-post.el:114: ("s/" ?ß)
latin-post.el:290: ("s/" ?ß)
latin-post.el:470: ("s/" ?ß)
latin-post.el:647: ("s/" ?ß)
latin-post.el:819: ("s/" ?ß)
latin-post.el:1105: ("sz" ?ß)
latin-post.el:1878: ("-" ?ß)
latin-post.el:2279: ("s/" ?ß)
latin-pre.el:122: ("\"s" ?ß)
latin-pre.el:374: ("\"s" ?ß)
latin-pre.el:563: ("\"s" ?ß)
latin-pre.el:670: ("\"s" ?ß)
latin-pre.el:896: ("\"s" ?ß)
latin-pre.el:1054: ("\"s" ?ß)
latin-pre.el:1186: ("\"s" ?ß)
rfc1345.el:134: ("&ss" ?ß)
slovak.el:102: ("=s" ?ß)
slovak.el:127: ("=S" ?ß)
slovak.el:199: ("[[[s" ?ß)
slovak.el:229: ("[[[S" ?ß)
slovak.el:297: ("=s" ?ß)
slovak.el:321: ("=S" ?ß)
slovak.el:375: ("[[[s" ?ß)
slovak.el:420: ("[[[S" ?ß)

although the Czech and Slovak mappings all map to the lower-case
version, not the upper case.

Robert

bug#30988: 25.3; Cannot input capital sharp S using the input method german-prefix

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: cgeek97@gmail.com,  30988@debbugs.gnu.org
> Date: Fri, 30 Mar 2018 14:12:47 +0200
> 
> >> Would it make sense to also add it to all the latin-* methods that
> >> currently define a mapping for ß ?
> >
> > Which ones?  Sharp s is a German-only thing (AFAIK), so IMO it makes
> > sense to add this only to input methods that specifically support the
> > German language.
> 
> grep ß '*.el' gives:

Thanks, I added the capital sharp s character to latin-prefix and
latin-postfix input methods.  The rest are either legacy (Latin-2,
Latin-3, Latin-4, etc.) and/or not really relevant to the German
language.  RFC 1345 doesn't support the new character, and I see no
signs that it wants to add it, so I don't think we should add it
there.