[bug #64958] [troff] accept `hla` without argument to unset hyphenation language

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?64958>

                 Summary: [troff] accept `hla` without argument to unset
hyphenation language
                   Group: GNU roff
               Submitter: gbranden
               Submitted: Fri 01 Dec 2023 08:14:04 PM UTC
                Category: Core
                Severity: 1 - Wish
              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: Fri 01 Dec 2023 08:14:04 PM UTC By: G. Branden Robinson <gbranden>
This looks like it would be pretty easy, a matter of restoring
`hyphenation_language` to the null pointer it starts life as.

This might be a cleaner (if _groff_-specific) way of disabling hyphenation
without getting bogged down in the details of the AT&T _troff_ "hyphenation
mode" feature.







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