[bug #59573] typesetting.mom: traps are not initialised (set, planted)

[G. Branden Robinson]

Update of bug #59573 (project groff):

                  Status:               Need Info => Fixed                  
             Open/Closed:                    Open => Closed                 
         Planned Release:                    None => 1.23.0                 

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Follow-up Comment #5:


commit 4e23c800e68ebf13d345491483639b97107816d6 (HEAD -> master,
origin/master, origin/HEAD)
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
Date:   Wed Dec 9 12:46:49 2020 +1100

    Lower new unplanted trap error to 'mac' warning.
    
    * src/roff/troff/div.cpp (top_level_diversion::change_trap): Change
      error upon invalid attempt to move an unplanted trap into a warning of
      type 'mac'.
    
    This somewhat stretches the documented semantics of the 'mac' warning
    type, so recast them to accommodate the new instance.
    
    * doc/groff.texi (Warnings):
    * src/roff/troff/troff.1.man (Warnings): Recast description of 'mac'
      warning type to include the above scenario.
    
      Recast to mention boxes as well as traditional diversions.  Refer to
      macros, strings, diversions, and boxes collectively as "objects"
      instead of "macros", avoiding synecdoche.  Use complete sentences.
    
    Thanks to Bjarni Ingi Gislason for reporting the diagnostic arising in
    real life, and to Peter Schaffter for the discussion and recommendation.
    Some bike sheds get painted quickly!
    
    Fixes <https://savannah.gnu.org/bugs/?59573>.


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