[bug #60935] [troff] option parser lets you create a nameless register or string

[G. Branden Robinson]

Update of bug #60935 (project groff):

                  Status:             In Progress => Fixed                  
             Open/Closed:                    Open => Closed                 
         Planned Release:                    None => 1.23.0                 
                 Summary: [troff] option parser will let you create a nameless
register or string => [troff] option parser lets you create a nameless
register or string

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Follow-up Comment #1:


commit 7b142b5159869ec390188ce365ad5d779f1a7813
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
Date:   Mon Jul 19 08:20:00 2021 +1000

    [troff]: Emit error if -d, -r argument malformed.
    
    * src/roff/troff/input.cpp (main): Emit error diagnostic if `-d` or `-r`
      option is given a malformed argument.  This prevents a string or
      register with an empty name from being created.
    
    Fixes <https://savannah.gnu.org/bugs/?60935>.


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