[bug #64529] [ms] anomalous diagnostic for initial keep

[Dave]

URL:
  <https://savannah.gnu.org/bugs/?64529>

                 Summary: [ms] anomalous diagnostic for initial keep
                   Group: GNU roff
               Submitter: barx
               Submitted: Tue 08 Aug 2023 05:47:42 AM CDT
                Category: Macro ms
                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: Tue 08 Aug 2023 05:47:42 AM CDT By: Dave <barx>
Reported by Doug McIlroy, some time ago
(http://lists.gnu.org/r/bug-groff/2011-02/msg00009.html).  He discovered it in
1.20.1, but both examples produce essentially the same stderr in 1.23.  In his
words:

In groff 1.20.1, -ms input that begins

.KF
.LP

draws a special diagnostic that says .LP "must be in top-level environment,
not `k', when first page is started"

But ...  if you put a blank line before .KF,


.KF
.LP
.KE

you get a nonsense diagnostic: "KE without KS or KF".

Both diagnostics strike me as wrong. Why shouldn't a document begin with a
keep?

I met the problem in real life, while debugging pic input.  The picture, which
was ultimately to be included in a bigger document via .PS <file, was
accompanied by a caption--thus it was bracketed by .KF/.KE.







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