Update of bug #64575 (project groff):
Status: None => In Progress
Assigned to: None => gbranden
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Follow-up Comment #1:
Hi Dave,
[comment #0 original submission:]
> * Changes the .PY definition in tmac/pic.tmac to call to .PF rather than
duplicating its (three bytes of) code. This is almost too trivial to DRY,
but
> ** the new form is a cue to the human reader that .PY is meant to be an
alias of .PF; and
> ** .PE was already defined as a variant of .PF with an explicit call to it,
so this makes the .PY definition conform to that precedent.
I must have mistakenly thought that `PY` would call _mm_'s `PF`, but
experimentation reveals that this is not the case.
You can load `pic.tmac` before or after _mm_, or not at all (this is
preferred, since _mm_ provides its own implementations).
groff -p -mm -mpic # bad idea
clobbers _mm_'s macros of the same names (taking the `PF` page footer
management macro off the table), and changes the rendering (because "pic.tmac"
centers pictures and _mm_ doesn't), but otherwise seems to do no damage--to a
trivial document like the following.
$ cat EXPERIMENTS/little-flyback-pic.mm
.P
Check this out.
.P
.PS
circle 2i filled
.PY
I dug a hole!
_groff mm_ *does* have internal macros that call `PF`, so I think the advice
in _groff_tmac_(5) on this subject holds.
No objection to your patch--just preserving this little exploration for
posterity and searchability.
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