[bug #62656] troff doesn't warn when a bogus font name is selected

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?62656>

                 Summary: troff doesn't warn when a bogus font name is
selected
                 Project: GNU troff
               Submitter: gbranden
               Submitted: Mon 20 Jun 2022 06:58:04 PM UTC
                Category: Core
                Severity: 3 - Normal
              Item Group: Warning/Suspicious 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: Mon 20 Jun 2022 06:58:04 PM UTC By: G. Branden Robinson <gbranden>
Affects groff 1.22.4.


$ nroff -ww
.ft 200
a
.ft BOGUS
b
.pl \n[nl]u
a b


We should get warnings about selection of nonexistent fonts, even _without_
`-ww`, but we don't.

groff Git HEAD does cope with the bogus mounting position case.


$ ./build/test-groff -Tascii -ww
.ft 200
troff:<standard input>:1: warning: no font mounted at position 200
a
.ft BOGUS
b
.pl \n[nl]u
a b


...but not the bogus font name.

Fix this.







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