Subject: bug#22369: 24.5; comment-style 'extra-line' doesn't correctly indent with tabs

From: "Geyslan G. Bem" <[email-masked]>
Date: Fri, 15 Jan 2016 18:59:59 -0300

2016-01-15 9:42 GMT-03:00 Alan Mackenzie <[email-masked]>:
> Bug fixed in emacs-25 branch.

Alan, tested and it's ok. Thank you.

I realized now that comment-dwim leaves a trailing space in the first
line of the comment ( /* extra-line). This space isn't needed by
c-indent-new-comment-line (M-j), so I think that it could be an issue
too, since it's deliberately doing that.

>
> Bug report left open, due to a feature request in it.
>
> --
> Alan Mackenzie (Nuremberg, Germany).
>
>
> In article <[email-masked]> you wrote:
>> (setq c-basic-offset 8
>>       tab-width 8
>>       indent-tabs-mode t
>>       comment-style 'extra-line)
>> (c-set-style "linux")
>
>> Using the above settings the comment-dwim (with region active) indent
>> the second and last lines with spaces instead of tabs.
>
>>         /*
>>          * void main()
>>          * {
>>          *  int i;
>>          *  int b;
>>          *  printf("format string");
>>          * }
>>          */
>
>> For better comprehension check out this
>> http://stackoverflow.com/questions/34710840/c-comment-in-emacs-linux-kernel-style-v2
>
>> May I suggest the addition of a new comment-style option that does like this?
>
>>         /* void main()
>>          * {
>>          *  int i;
>>          *  int b;
>>          *  printf("format string");
>>          * }
>>          */
>
>
>
>> In GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.6)
>>  of 2015-09-09 on foutrelis
>> Windowing system distributor `The X.Org Foundation', version 11.0.11800000
>> System Description:    Arch Linux
>
>> Configured using:
>>  `configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
>>  --localstatedir=/var --with-x-toolkit=gtk3 --with-xft
>>  'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
>>  --param=ssp-buffer-size=4' CPPFLAGS=-D_FORTIFY_SOURCE=2
>>  LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro'
>
>> Important settings:
>>   value of $LC_CTYPE: pt_BR.UTF-8
>>   value of $LC_MONETARY: pt_BR.UTF-8
>>   value of $LC_NUMERIC: pt_BR.UTF-8
>>   value of $LC_TIME: pt_BR.UTF-8
>>   value of $LANG: en_US.UTF-8
>>   value of $XMODIFIERS: @im=ibus
>>   locale-coding-system: utf-8-unix
>
>> Major mode: Emacs-Lisp
>
>> Minor modes in effect:
>>   tooltip-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:
>
>
>> Load-path shadows:
>> /home/geyslan/.emacs.d/elpa/helm-20151106.2158/helm-multi-match hides
>> /home/geyslan/.emacs.d/elpa/helm-core-20151104.0/helm-multi-match
>
>> Features:
>> (shadow sort gnus-util mail-extr emacsbug message idna format-spec
>> rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
>> mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
>> mm-util mail-prsvr mail-utils jka-compr find-func help-fns sregex
>> re-builder debug tabify cc-langs cc-mode cc-fonts cc-guess cc-menus
>> cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs help-mode
>> go-mode-autoloads info easymenu package epg-config edmacro kmacro
>> cl-loaddefs cl-lib time-date tooltip electric uniquify ediff-hook
>> vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image
>> regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode register
>> page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
>> font-lock syntax facemenu font-core frame cham georgian utf-8-lang
>> misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
>> greek romanian slovak czech european ethiopic indian cyrillic chinese
>> case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer 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 make-network-process dbusbind
>> gfilenotify dynamic-setting system-font-setting font-render-setting
>> move-toolbar gtk x-toolkit x multi-tty emacs)
>
>> Memory information:
>> ((conses 16 132515 7051)
>>  (symbols 48 21866 0)
>>  (miscs 40 226 747)
>>  (strings 32 23818 4361)
>>  (string-bytes 1 883190)
>>  (vectors 16 12839)
>>  (vector-slots 8 428611 6669)
>>  (floats 8 75 442)
>>  (intervals 56 799 191)
>>  (buffers 960 17)
>>  (heap 1024 45432 1517))
>
>
>

-- 
Regards,

Geyslan G. Bem
hackingbits.com