GNU bug report logs - #52340
Improper auto-indentation in C++-mode

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From: Vince West <dvincentwest@HIDDEN>
Date: Mon, 6 Dec 2021 16:09:32 -0600
Message-ID: <CAPfAwJXhbWkNwEUGtgBzs4vFkJ8=OTZP2orvvr2SzFvSU2FXvQ@HIDDEN>
Subject: Improper auto-indentation in C++-mode
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--0000000000007f316505d2818402
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

`indent-region` is giving some weird results in c++-mode.  I will just
paste the main function here:

```C++
int main() {

  // looks good to me
  float nums[9] =3D
    {
      1., 2., 3.,
      4., 5., 6.,
      7., 8., 9.,
    };

  // wtf
  float * numsp =3D new float[9]
  {
    1., 2., 3.,
      4., 5., 6.,
      7., 8., 9.,
      };

}
```

In c-mode, the indentation looks fine:
```C
int main() {

  // looks good to me
  float nums[9] =3D
    {
      1., 2., 3.,
      4., 5., 6.,
      7., 8., 9.,
    };

  // looks fine in C-mode
  float * numsp =3D new float[9]
    {
      1., 2., 3.,
      4., 5., 6.,
      7., 8., 9.,
    };

}

```


In GNU Emacs 27.2 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60
Version 10.14.6 (Build 18G95))
 of 2021-03-27 built on builder10-14.porkrind.org
Windowing system distributor 'Apple', version 10.3.2022
System Description:  macOS 11.6.1

Recent messages:
Undo
Making completion list...
Indenting region... done
You can run the command =E2=80=98indent-region=E2=80=99 with C-M-\
Indenting region... done
previous-line: Beginning of buffer
Mark activated
Indenting region... done
previous-line: Beginning of buffer [2 times]
Making completion list... [2 times]

Configured using:
 'configure --with-ns '--enable-locallisppath=3D/Library/Application
 Support/Emacs/${version}/site-lisp:/Library/Application
 Support/Emacs/site-lisp' --with-modules'

Configured features:
NOTIFY KQUEUE ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS MODULES
THREADS JSON PDUMPER GMP

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: C++//l

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
  abbrev-mode: t

Load-path shadows:
None found.

Features:
(shadow sort emacsbug sendmail mail-extr message rmc puny dired
dired-loaddefs format-spec rfc822 mml mml-sec password-cache epa derived
epg epg-config gnus-util rmail rmail-loaddefs text-property-search
time-date subr-x mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 mm-util ietf-drums mail-prsvr mailabbrev mail-utils
gmm-utils mailheader thingatpt cl-extra seq byte-opt gv bytecomp
byte-compile cconv help-mode novice cc-mode cc-fonts easymenu cc-guess
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
cl-loaddefs cl-lib tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel term/ns-win ns-win ucs-normalize mule-util
term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame minibuffer 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 composite charscript charprop case-table epa-hook
jka-cmpr-hook help simple abbrev obarray 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 threads kqueue cocoa ns multi-tty make-network-process emacs)

Memory information:
((conses 16 69710 8231)
 (symbols 48 8632 1)
 (strings 32 22129 1555)
 (string-bytes 1 831409)
 (vectors 16 13165)
 (vector-slots 8 160910 15816)
 (floats 8 31 31)
 (intervals 56 433 6)
 (buffers 1000 14))

--0000000000007f316505d2818402
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><br>`indent-region` is giving some weird results in c++-mo=
de.=C2=A0 I will just<br>paste the main function here:<br><br><font face=3D=
"monospace">```C++<br>int main() {<br><br>=C2=A0 // looks good to me<br>=C2=
=A0 float nums[9] =3D<br>=C2=A0 =C2=A0 {<br>=C2=A0 =C2=A0 =C2=A0 1., 2., 3.=
,<br>=C2=A0 =C2=A0 =C2=A0 4., 5., 6.,<br>=C2=A0 =C2=A0 =C2=A0 7., 8., 9.,<b=
r>=C2=A0 =C2=A0 };<br><br>=C2=A0 // wtf<br>=C2=A0 float * numsp =3D new flo=
at[9]<br>=C2=A0 {<br>=C2=A0 =C2=A0 1., 2., 3.,<br>=C2=A0 =C2=A0 =C2=A0 4., =
5., 6.,<br>=C2=A0 =C2=A0 =C2=A0 7., 8., 9.,<br>=C2=A0 =C2=A0 =C2=A0 };<br><=
br>}<br>```</font><br><br>In c-mode, the indentation looks fine:<br><font f=
ace=3D"monospace">```C<br>int main() {<br><br>=C2=A0 // looks good to me<br=
>=C2=A0 float nums[9] =3D<br>=C2=A0 =C2=A0 {<br>=C2=A0 =C2=A0 =C2=A0 1., 2.=
, 3.,<br>=C2=A0 =C2=A0 =C2=A0 4., 5., 6.,<br>=C2=A0 =C2=A0 =C2=A0 7., 8., 9=
.,<br>=C2=A0 =C2=A0 };<br><br>=C2=A0 // looks fine in C-mode<br>=C2=A0 floa=
t * numsp =3D new float[9]<br>=C2=A0 =C2=A0 {<br>=C2=A0 =C2=A0 =C2=A0 1., 2=
., 3.,<br>=C2=A0 =C2=A0 =C2=A0 4., 5., 6.,<br>=C2=A0 =C2=A0 =C2=A0 7., 8., =
9.,<br>=C2=A0 =C2=A0 };<br><br>}<br><br>```</font><br><br><br>In GNU Emacs =
27.2 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6=
 (Build 18G95))<br>=C2=A0of 2021-03-27 built on <a href=3D"http://builder10=
-14.porkrind.org">builder10-14.porkrind.org</a><br>Windowing system distrib=
utor &#39;Apple&#39;, version 10.3.2022<br>System Description: =C2=A0macOS =
11.6.1<br><br>Recent messages:<br>Undo<br>Making completion list...<br>Inde=
nting region... done<br>You can run the command =E2=80=98indent-region=E2=
=80=99 with C-M-\<br>Indenting region... done<br>previous-line: Beginning o=
f buffer<br>Mark activated<br>Indenting region... done<br>previous-line: Be=
ginning of buffer [2 times]<br>Making completion list... [2 times]<br><br>C=
onfigured using:<br>=C2=A0&#39;configure --with-ns &#39;--enable-locallispp=
ath=3D/Library/Application<br>=C2=A0Support/Emacs/${version}/site-lisp:/Lib=
rary/Application<br>=C2=A0Support/Emacs/site-lisp&#39; --with-modules&#39;<=
br><br>Configured features:<br>NOTIFY KQUEUE ACL GNUTLS LIBXML2 ZLIB TOOLKI=
T_SCROLL_BARS NS MODULES<br>THREADS JSON PDUMPER GMP<br><br>Important setti=
ngs:<br>=C2=A0 value of $LANG: en_US.UTF-8<br>=C2=A0 locale-coding-system: =
utf-8-unix<br><br>Major mode: C++//l<br><br>Minor modes in effect:<br>=C2=
=A0 tooltip-mode: t<br>=C2=A0 global-eldoc-mode: t<br>=C2=A0 electric-inden=
t-mode: t<br>=C2=A0 mouse-wheel-mode: t<br>=C2=A0 tool-bar-mode: t<br>=C2=
=A0 menu-bar-mode: t<br>=C2=A0 file-name-shadow-mode: t<br>=C2=A0 global-fo=
nt-lock-mode: t<br>=C2=A0 font-lock-mode: t<br>=C2=A0 blink-cursor-mode: t<=
br>=C2=A0 auto-composition-mode: t<br>=C2=A0 auto-encryption-mode: t<br>=C2=
=A0 auto-compression-mode: t<br>=C2=A0 line-number-mode: t<br>=C2=A0 transi=
ent-mark-mode: t<br>=C2=A0 abbrev-mode: t<br><br>Load-path shadows:<br>None=
 found.<br><br>Features:<br>(shadow sort emacsbug sendmail mail-extr messag=
e rmc puny dired<br>dired-loaddefs format-spec rfc822 mml mml-sec password-=
cache epa derived<br>epg epg-config gnus-util rmail rmail-loaddefs text-pro=
perty-search<br>time-date subr-x mm-decode mm-bodies mm-encode mail-parse r=
fc2231<br>rfc2047 rfc2045 mm-util ietf-drums mail-prsvr mailabbrev mail-uti=
ls<br>gmm-utils mailheader thingatpt cl-extra seq byte-opt gv bytecomp<br>b=
yte-compile cconv help-mode novice cc-mode cc-fonts easymenu cc-guess<br>cc=
-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs<br>cl-loaddefs =
cl-lib tooltip eldoc electric uniquify ediff-hook vc-hooks<br>lisp-float-ty=
pe mwheel term/ns-win ns-win ucs-normalize mule-util<br>term/common-win too=
l-bar dnd fontset image regexp-opt fringe<br>tabulated-list replace newcomm=
ent text-mode elisp-mode lisp-mode<br>prog-mode register page tab-bar menu-=
bar rfn-eshadow isearch timer<br>select scroll-bar mouse jit-lock font-lock=
 syntax facemenu font-core<br>term/tty-colors frame minibuffer cl-generic c=
ham georgian utf-8-lang<br>misc-lang vietnamese tibetan thai tai-viet lao k=
orean japanese eucjp-ms<br>cp51932 hebrew greek romanian slovak czech europ=
ean ethiopic indian<br>cyrillic chinese composite charscript charprop case-=
table epa-hook<br>jka-cmpr-hook help simple abbrev obarray cl-preloaded nad=
vice loaddefs<br>button faces cus-face macroexp files text-properties overl=
ay sha1 md5<br>base64 format env code-pages mule custom widget hashtable-pr=
int-readable<br>backquote threads kqueue cocoa ns multi-tty make-network-pr=
ocess emacs)<br><br>Memory information:<br>((conses 16 69710 8231)<br>=C2=
=A0(symbols 48 8632 1)<br>=C2=A0(strings 32 22129 1555)<br>=C2=A0(string-by=
tes 1 831409)<br>=C2=A0(vectors 16 13165)<br>=C2=A0(vector-slots 8 160910 1=
5816)<br>=C2=A0(floats 8 31 31)<br>=C2=A0(intervals 56 433 6)<br>=C2=A0(buf=
fers 1000 14))<br></div>

--0000000000007f316505d2818402--