Re: [Groff] I need help again - couldn't find the problem with EQ

[Werner LEMBERG]

> groff's grap (I know it isn't part of groff but the freely available
> one that people use with it) is complaining because the grap input
> doesn't match the grammar in the man page.  It seems that the
> original grap (based on Plan 9's source) accepts, for example, the
> grid attributes in any order where as groff grap wants them as
> defined in the man page (it's yacc grammar dictates this).
> 
> I'd guess this is because Bentley's(?) paper on grap suggested a
> more restricted grammar than the code actually allowed and the
> implementor of the new grap followed the paper's grammar.
> 
> They're trivial changes.
> 
>     % diff 26.bad 26.fixed 
>     874c874
>     < frame top invis right invis ht 2.75 wid 4
>     ---
>     > frame ht 2.75 wid 4 top invis right invis
>     882,883c882,883
>     < grid dotted bot from .108 to .392 by .1 " "
>     < grid dotted left from -2 to 3 by 1. " "
>     ---
>     > grid bot dotted from .108 to .392 by .1 " "
>     > grid left dotted from -2 to 3 by 1. " "

It may be worth to make the new grap as tolerant as the old one.  Ted?


    Werner