Re: [Fwd: Texexec bug]

["Gregory D. Collins" <gcollins@cs.yale.edu>]

Hans Hagen wrote:
> At 12:11 PM 11/3/2002 -0500, Gregory D. Collins wrote:
> 
>> Hello ntg-context,
>>
>> I have a copy of texexec.pl dated 2002/05/04 which has a bug in it. I
>> use tetex under cygwin in Windows, and was having a lot of trouble
>> getting texexec working. The problem is as follows. There is a line in
>> texexec.pl:
>>
>> my $dosish    = ($Config{'osname'} =~ /^(ms)?dos|^os\/2|^(ms|cyg)win/i);
>>
>> The purpose of this is to find out if we are in a "dosish" environment.
>> This is used later:
>>
>> unless ($dosish)
>> ~  { if ($TeXFormatFlag == "&") { $TeXFormatFlag = "\\&" }
>> ~    if ($MpFormatFlag  == "&") { $MpFormatFlag  = "\\&" } }
>>
>> This breaks badly (and very confusingly) later when we do system() calls
>> if $SHELL=bash. I don't know if the rest of cygwin's environment
>> qualifies as "dosish" or not for the rest of the program, although mine
>> works fine if it's turned off.
>>
>> Is this a known bug?
> 
> 
> So you suggest to remove the cyg from the regexp?

The part which is causing the problem is the system() call, when we need 
to escape the "&" under sh, but not when using the Windows shell. So 
perhaps the following:

     # If $SHELL contains "sh", it is probably UNIXish
     my $escapeshell = ($ENV{"SHELL"} =~ m/sh/i);

...

# Then later, instead of:
unless ($dosish)
   { if ($TeXFormatFlag == "&") { $TeXFormatFlag = "\\&" }
     if ($MpFormatFlag  == "&") { $MpFormatFlag  = "\\&" } }

# We do:
unless ($dosish && !$escapeshell)
   { if ($TeXFormatFlag == "&") { $TeXFormatFlag = "\\&" }
     if ($MpFormatFlag  == "&") { $MpFormatFlag  = "\\&" } }

What do you think?
-- 
Gregory D. Collins <gcollins@cs.yale.edu>
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