[bug #66255] [troff] `write` and `writec` requests mishandle empty second argument

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?66255>

                 Summary: [troff] `write` and `writec` requests mishandle
empty second argument
                   Group: GNU roff
               Submitter: gbranden
               Submitted: Wed 25 Sep 2024 10:26:44 PM UTC
                Category: Core
                Severity: 3 - Normal
              Item Group: Incorrect behaviour
                  Status: In Progress
                 Privacy: Public
             Assigned to: gbranden
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Wed 25 Sep 2024 10:26:44 PM UTC By: G. Branden Robinson <gbranden>
Observable in _groff_ 1.22.4 and ever since.  Likely much older.


$ /usr/bin/groff -U
.open stream thing.txt
.write stream a
.write stream b
.write stream
.write stream c
.close stream
.ex
$ cat thing.txt 
a
b
.write stream c









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