[bug #64354] [troff] discourage or reject use of 'F' drawing command

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?64354>

                 Summary: [troff] discourage or reject use of 'F' drawing
command
                   Group: GNU roff
               Submitter: gbranden
               Submitted: Tue 27 Jun 2023 06:17:55 AM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  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: Tue 27 Jun 2023 06:17:55 AM UTC By: G. Branden Robinson <gbranden>
DF is an output device command.

That does not mean that the \D'F ...' escape sequence needs to be.

("It's a layering violation!")

There are ample facilities in the groff language for fill color selection. 
Users should employ those, not an "expert mode" sneaky trick (which provides
no benefit apart from the dubious one of not having to assign a color an
identifier before using it).







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