Update of bug #64616 (project groff):
Status: None => Need Info
Assigned to: None => gbranden
Summary: [troff] should warn when \a, \e, \t used in
interpretation mode => [troff] warn when \e used in interpretation mode?
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Follow-up Comment #1:
I have to scratch `\a` and `\t` from that list already.
Diversions are not read in copy mode (at least in one of their trips through
the formatter), yet they may encounter uninterpreted
leaders and tabs.
The _me_(7) macro package exercises this behavior and "meintro.me" illustrates
it.
https://git.savannah.gnu.org/cgit/groff.git/tree/doc/meintro.me.in?h=1.23.0#n1055
(Look for the `xp` call.)
There's some fairly hairy stuff in the package's `)x` macro.
https://git.savannah.gnu.org/cgit/groff.git/tree/tmac/e.tmac?h=1.23.0#n1769
So that just leaves poor little \e.
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