Subject: 24.3; Inconsistent indentation in C++ mode initialization lists

From: Greg Long <[email-masked]>
Date: Wed, 26 Apr 2017 17:32:42 -0700

When creating an initialization list for a constructor in C++ mode there
is an inconsistency in indentation. In the following code:

foo::foo()
: m_test_var0(100)
, m_test_var1(100)
, m_test_var2(100)
, m_test_var3(100)
, m_test_var4(100)
, m_test_var5(100)
, m_test_var6(100)
, m_test_var7(100)
, m_test_var8(100)
, m_test_var9(100)
, m_test_var10(100)
, m_test_var11(100)
, m_test_var12(100)
, m_test_var13(100)
, m_test_var14(100)
, m_test_var15(100)
, m_test_var16(100)
, m_test_var17(100)
, m_test_var18(100)
, m_test_var19(100)
, m_test_var20(100)
, m_test_var21(100)
, m_test_var22(100)
, m_test_var23(100)
, m_test_var24(100)
, m_test_var25(100)
  , m_test_var26(100)
{}

variables inserted before m_test_var25 are not indented, while
ones after m_test_var25 are indented (in the same style as m_test_var26).
The
indentation doesn't always happen after exactly 26 variables and the
size of indentation is not always 2 spaces, instead the
behavior seems to depend on the length of the variable strings. However
the indentation will always happen eventually. It appears the actual
values within the parentheses don't matter, either.

In GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7)
 of 2014-03-07 on lamiak, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11803000
System Description: Ubuntu 14.04.5 LTS

Configured using:
 `configure '--build' 'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var/lib' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 '--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp'
 '--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes'
 '--with-x-toolkit=gtk3' '--with-toolkit-scroll-bars'
 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector
 --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall'
 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro'
 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

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Major mode: C++/l

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  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

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