[bug #54666] [PATCH] pic.ypp: useless rule in parser due to conflicts

[G. Branden Robinson]

Update of bug #54666 (project groff):

                Severity:              3 - Normal => 2 - Minor              

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Follow-up Comment #3:

Shift/reduce conflicts are common in ambiguous grammars and I'm not surprised
that pic has one, especially an old dialect thereof (James Clark's
"compatibility sop" annotation).

I don't mind taking the rule out, but we should tell people how to rewrite old
pic files that exercise the ambiguity, and for that, we need examples "before"
and "after".  We can then write a NEWS item about it.

I'd do it myself but I have tried and failed twice to learn pic.  Something
about it doesn't want to mesh with my brain.  So help is needed here.

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