[bug #63011] troff/input.cpp: wrong warning from "do_overstrike"

[Dave]

Update of bug #63011 (project groff):

                 Summary: troff/input.cpp: wrong(?) warning from
"do_overstrike" => troff/input.cpp: wrong warning from "do_overstrike"

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Follow-up Comment #1:

Interesting, I don't see any fundamental behavior difference between 1.22.4
and git HEAD here.  In both I get the warning only if warnings are enabled;
the only difference is that 1.22.4 emits a terser version:

$ printf '\o\no+\nOne.\n' | groff -ww | wc
troff: <standard input>:2: warning: missing closing delimiter
    236     630    5730


* If the documentation is correct, there should be no warning.
* If the documentation is incorrect, and newline is not a valid \o delimiter,
the warning should not complain only about its closing delimiter.
* If the documentation is correct, but based on it recommending against this
practice, a warning is emitted, the warning should tell the user "that's a bad
idea" rather than "something's missing."

So no matter the situation, the current warning is inaccurate.  Updating
Summary accordingly.


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