[bug #52983] [PATCH] troffrc: Define register 'F' to avoid warnings

[Ingo Schwarze]

Follow-up Comment #1, bug #52983 (project groff):

This should be rejected.  The purpose of the file troffrc is to provide a
place for site-specific configurations, and it is already too long as it
stands and should probably be cleaned up.  We certained shouldn't dump random
code into it.

Besides, if you consider using an undefined register a bug, then that's a bug
in pod2man(1), not in groff.  Pod::Man 4.07 actually generates code which,
according to a comment in the generated code, intends to avoid the warning:

  .\" Avoid warning from groff about undefined register 'F'.
  .if !\nF .nr F 0

Arguably, it might be better for pod2man(1) to write

  .if !rF .nr F 0

instead, but i don't know whether that might be less portable.  Anyway, that's
not for groff to decide.

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