[l2h] Nesting amsmath constructs align and cases causes infinite loop

[Julius Smith]

fwd - jos [P.S. It fixes the problem in my test case]

At 03:02 AM 8/21/2014, Shigeharu TAKENO wrote:
>shige 08/20 2014
>----------------
>
>Julius Smith wrote:
>| I get the same behavior in my Mac OS environment.  The failure is
>| noted in images.log but not in the console printout:
>=====
>| I have no idea how it's happening, but images.tex contains a
>| definition only for \centerinlinemathS:
>
>It may be a bug of versions/math.pl which divide the cases
>environment in the images.tex.
>
>It may be fixed the following patch.
>
>Well, I send it to M.Saltman and latex2html at tug.org, but it was
>not send to l2h-ml because my address may be rejected by
>latex2html at tug.org.
>
>----- From here (patch for math.pl) -----
>--- versions/math.pl.ORG 2004-01-01 15:15:01.000000000 +0900
>+++ versions/math.pl     2014-08-19 20:02:50.828761000 +0900
>@@ -1432,6 +1432,7 @@
>             while ($pre_test =~ s/(($O|$OP)\d+($C|$CP))(.*)\1/$4/) {};
>             $use_all = 1 if ($pre_test=~s/($O|$OP)\d+($C|$CP)//);
>             if (!$use_all) {
>+               $pre_test = $pre_text;
>                 while ($pre_test =~ 
> s/\\begin(($O|$OP)\d+($C|$CP))(.*)\\end\1/$4
>/){};
>                 $use_all = 1 if 
> ($pre_test=~s/\\(begin|end)($O|$OP)\d+($C|$CP)//
>);
>             };
>----- To here (patch for math.pl) -----
>
>+========================================================+
>  Shigeharu TAKENO     NIigata Institute of Technology
>                        kashiwazaki,Niigata 945-1195 JAPAN
>  shige at iee.niit.ac.jp   TEL(&FAX): +81-257-22-8161
>+========================================================+


Julius O. Smith III <jos at ccrma.stanford.edu>
Professor of Music and, by courtesy, Electrical Engineering
CCRMA, Stanford University
http://ccrma.stanford.edu/~jos/  
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