[newlib-cygwin] texi2pod.pl: import support for @t{...} from gcc

[Michael Frysinger <vapier@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=957f0a864a624a98d3fa220ffb4b7030cd261505

commit 957f0a864a624a98d3fa220ffb4b7030cd261505
Author: Simon Marchi <simon.marchi@polymtl.ca>
Date:   Wed Jan 15 12:58:08 2020 -0500

    texi2pod.pl: import support for @t{...} from gcc
    
    GDB's man page source (in gdb.texinfo) contains:
    
        @t{++}
    
    The @t{...} part is supposed to display the wrapped text with a
    fixed-width font.  The texi2pod.pl script currently doesn't handle
    @t{...}, so it appears as-is in the man page:
    
        You can use GDB to debug programs written in C, C@t{++}, Fortran and Modula-2.
    
    gcc's version of texi2pod.pl (at contrib/texi2pod.pl in gcc's repo)
    replaces @t{...} with the wrapped text as-is, which I think is an
    acceptable behavior.  The fixed-width font distinction is not really
    important for a man page, where the text will be displayed with whatever
    font the user is using.
    
    Import the line that does that from gcc's version.
    
    I have verified that there is no other, unwanted change in man pages
    generated in binutils' and GDB's doc, with this patch applied.
    
    etc/ChangeLog:
    
            * texi2pod.pl: Handle @t{...} tags.

Diff:
---
 etc/ChangeLog   | 4 ++++
 etc/texi2pod.pl | 1 +
 2 files changed, 5 insertions(+)

diff --git a/etc/ChangeLog b/etc/ChangeLog
index 78e9366e3..8742e2afc 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,7 @@
+2020-01-15  Simon Marchi  <simon.marchi@polymtl.ca>
+
+	* texi2pod.pl: Handle @t{...} tags.
+
 2018-06-19  Simon Marchi  <simon.marchi@ericsson.com>
 
 	* configure.in: Remove AC_PREREQ.
diff --git a/etc/texi2pod.pl b/etc/texi2pod.pl
index b0540338c..8d92bcf60 100644
--- a/etc/texi2pod.pl
+++ b/etc/texi2pod.pl
@@ -381,6 +381,7 @@ sub postprocess
     s/\@file\{([^\}]*)\}/F<$1>/g;
     s/\@w\{([^\}]*)\}/S<$1>/g;
     s/\@(?:dmn|math)\{([^\}]*)\}/$1/g;
+    s/\@t\{([^\}]*)\}/$1/g;
 
     # keep references of the form @ref{...}, print them bold
     s/\@(?:ref)\{([^\}]*)\}/B<$1>/g;