[bug #60954] [troff] implement environment removal

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?60954>

                 Summary: [troff] implement environment removal
                 Project: GNU troff
            Submitted by: gbranden
            Submitted on: Wed 21 Jul 2021 07:34:00 PM UTC
                Category: Core
                Severity: 1 - Wish
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

It offends my sense of orthogonality that environments can be created but not
destroyed.

Unsurprisingly, Werner Lemberg already noticed this fact 14 years ago.

https://lists.gnu.org/archive/html/groff/2006-05/msg00094.html

Sadly, the mailing list's crude and oversensitive email address censorship
code obliterated the clever part of Tadziu's solution that worked around the
need for environment removal, and which motivated Werner to shelve the idea.

I suppose that workaround lingers in the hdtbl directory somewhere, though.

No immediate plans to work on this, but I wanted to note it.




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