GNU bug report logs - #10590
c++-mode closing nested template angle braces breaks font-lock, indentation and show-paren-mode.

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

From: Matt Renaud <mrenaud92 <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: c++-mode closing nested template angle braces breaks font-lock,
	indentation and show-paren-mode.
Date: Mon, 23 Jan 2012 21:46:01 -0500

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

*Emacs Version: *24.0.92.2

When writing C++ code with nested templates, putting two (or more) closing
angle braces together causes the font-lock, show-paren-mode and indentation
to break.  Positioning point on any of the closing parentheses fails to
show the matching opening brace which makes template meta-programs
difficult to read.  Any nested templates will cause this.  The following is
a simple example showing the 2 cases:


template <typename T = std::vector<int>>
  struct foo    // Indentation broken here...
  {
  };


int main()
{
  std::vector<std::vector<int>> vv_int; // Font-lock broken here...

  return 0;
}

[Message part 2 (text/html, inline)]

Message #8 received at 10590 <at> debbugs.gnu.org (full text, mbox):

From: Alex <agrambot <at> gmail.com>
To: Matt Renaud <mrenaud92 <at> gmail.com>
Cc: 10590 <at> debbugs.gnu.org
Subject: Re: bug#10590: c++-mode closing nested template angle braces breaks
 font-lock, indentation and show-paren-mode.
Date: Thu, 08 Sep 2016 17:41:14 -0600

close 10590 25.1
quit

Matt Renaud <mrenaud92 <at> gmail.com> writes:

> Emacs Version: 24.0.92.2
>
> When writing C++ code with nested templates, putting two (or more) closing angle braces together causes the font-lock, show-paren-mode and indentation to break. Positioning point on any of the closing parentheses fails to show the matching
> opening brace which makes template meta-programs difficult to read. Any nested templates will cause this. The following is a simple example showing the 2 cases:
>
> template <typename T = std::vector<int>>
> struct foo // Indentation broken here...
> {
> };
>
> int main()
> {
> std::vector<std::vector<int>> vv_int; // Font-lock broken here...
>
> return 0;
> }

This appears to have been fixed in 25.1.

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