[bug #65763] Do actual string comparisons in macro packages

[Dave]

URL:
  <https://savannah.gnu.org/bugs/?65763>

                 Summary: Do actual string comparisons in macro packages
                   Group: GNU roff
               Submitter: barx
               Submitted: Sun 19 May 2024 11:27:44 PM CDT
                Category: Macro package - others/general
                Severity: 3 - Normal
              Item Group: Warning/Suspicious behaviour
                  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: Sun 19 May 2024 11:27:44 PM CDT By: Dave <barx>
Bug #64155 fixed fallbacks.tmac and troffrc-end to make tests that were
intended only to compare strings do so without formatting the comparands, so
that such comparisons work regardless of whether the current font contains all
the characters in the strings.

It turns out most of the other macro packages need this refinement as well.

$ groff -ms -fZD < /dev/null
troff:tmac/s.tmac:2203: warning: character 'p' not defined
troff:tmac/s.tmac:2203: warning: character 's' not defined
troff:tmac/s.tmac:2203: warning: character 'h' not defined
troff:tmac/s.tmac:2203: warning: character 't' not defined
troff:tmac/s.tmac:2203: warning: character 'm' not defined
troff:tmac/s.tmac:2203: warning: character 'l' not defined
$ groff -mm -fZD < /dev/null
troff:contrib/mm/m.tmac:1294: warning: character 'p' not defined
troff:contrib/mm/m.tmac:1294: warning: character 's' not defined
troff:contrib/mm/m.tmac:1294: warning: character 'h' not defined
troff:contrib/mm/m.tmac:1294: warning: character 't' not defined
troff:contrib/mm/m.tmac:1294: warning: character 'm' not defined
troff:contrib/mm/m.tmac:1294: warning: character 'l' not defined
$ groff -me -fZD < /dev/null
troff:tmac/e.tmac:115: warning: character 'p' not defined
troff:tmac/e.tmac:115: warning: character 's' not defined
troff:tmac/e.tmac:115: warning: character 'h' not defined
troff:tmac/e.tmac:115: warning: character 't' not defined
troff:tmac/e.tmac:115: warning: character 'm' not defined
troff:tmac/e.tmac:115: warning: character 'l' not defined

(-fZD is a useful test, as this font ships with groff, but a likelier
real-world scenario is users formatting documents containing only CJK
characters.)

-man, -mdoc, and -mom exhibit similar behavior.  The first two of those
operate in a specialized domain where the problem may not be applicable, and
-mom has her own set of rules that may preclude specifying -f on the command
line.  Peter is cc:ed so he can address this.

I didn't test all the auxiliary packages, but, for example, pdf.tmac and
ps.tmac are clean while tty.tmac is not.







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