[Groff] Fw: tbl/eqn: # does not work as delimiter

[Werner LEMBERG]

This is an interesting question.  It seems that this is a generic
limitation even present with AT&T.  Can someone confirm and/or
comment?


    Werner

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> Subject: 
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> Re: tbl/eqn: # does not work as delimiter
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> Date: 
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> Fri, 9 Oct 2009 09:17:11 -0600
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> The tbl preprocessor makes extensive use of the # character, including  
> creation of a macro named T#.  When instructed to do so, the eqn  
> preprocessor subsequently picks these up as delimiters, and then  
> complains about the contents, as well as creating mangled things to  
> pass on to groff.  Under some circumstances, tbl may use other special  
> characters in names as well. All of $, % and @ appear to be safe  
> delimiters when placing equations in a table.
>
> On Oct 9, 2009, at 7:24 AM, Denis M. Wilson wrote:
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> > Bug report sent as attachment of Linux ar (archive) file.
> >
> > Sincerely, Denis M. Wilson
> > !<arch>
> > tbl-bug.rep/    1255093984  500   100   100644  339       `
> >                            Groff Bug Report
> > GROFF VERSION: 1.20.1
> >
> > MACHINE: Dell inspiron desktop
> >
> > OS: Ubuntu 8.04
> >
> > COMPILER: g++ 4.2.4
> >
> > INPUT FILES: tbl-bug.n
> >
> > COMMAND LINE: groff -te tbl-bug.n
> >
> > DESCRIPTION OF INCORRECT BEHAVIOUR:
> > Many error and warning messages and incorrect output. The problem  
> > goes away
> > when the eqn delim characters ## are changed to $$.
> >
> > tbl-bug.n/      1255093786  500   100   100644  45        `
> > START
> > .EQ
> > delim ##
> > .EN
> > .TS
> > l.
> > #a#
> > .TE
> > FINISH
> >
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