Re: repair comb-quoting

"'Ruud H.G. van Tol' [email protected] [sed-users]" <[email protected]> Fri, 22 Jan 2016 17:47:05 +0100

Newsgroups	gmane.editors.sed.user
Message-ID	<[email protected]>

On 2016-01-22 16:42, Sven Guckes [email protected] [sed-users] 
wrote:

> http://www.guckes.net/examples/gg.tw72.comb.txt

A Perl alternative: concatenate a short line to its previous line,
but only if it has the same prefix.

perl -e'
   my $buf= join "", <>;
   $buf =~ s/^(>(?>(?: *>)*) )(.*)\n^\1(.{1,20})$/$1$2 $3/mg;
   print $buf;
' ~/mail.txt

-- Ruud