URL:
<https://savannah.gnu.org/bugs/?64478>
Summary: want mechanism to clear hyphenation patterns defined
with .hw
Group: GNU roff
Submitter: None
Submitted: Thu 27 Jul 2023 04:29:04 AM UTC
Category: Core
Severity: 3 - Normal
Item Group: Feature change
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Planned Release: None
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Follow-up Comments:
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Date: Thu 27 Jul 2023 04:29:04 AM UTC By: Anonymous
[Quoting Branden in http://lists.gnu.org/r/groff/2023-03/msg00108.html]
One of the themes of my suggested revisions to GNU troff has been to provide
ways to unwind or reset things that historically haven't been available. One
of those is environment removal (bug #60954).
Another that has occurred to me is hyphenation override removal.
Today, invoking the `hw` request without arguments does nothing. We could
change it to clear any existing hyphenation overrides.
Or, perhaps better, we could add an 'hwrm' or 'rhw' request; if given
arguments, it reads each word (ignoring hyphens), matches it against the
existing list of overrides, and removes the word if found. If given no
arguments, it removes all overrides. Then, an.tmac (and doc.tmac) could call
it when hitting `TH` (and `Dd`) macros, tidying up the state of the formatter
for the next document.
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