[bug #61279] [man] section heading font remapping can affect headers/footers

[G. Branden Robinson]

URL:
  <https://savannah.gnu.org/bugs/?61279>

                 Summary: [man] section heading font remapping can affect
headers/footers
                 Project: GNU troff
            Submitted by: gbranden
            Submitted on: Mon 04 Oct 2021 02:33:10 PM UTC
                Category: Macro - man
                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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Details:

The font-remapping-for-(sub)section headings feature I added in May of this
year led to remapping of italic fonts when they were used in header/footer
text if the previous page ended at a (sub)section heading boundary that
.ne-eded more vertical space than remained on the page.  The remapping was
thus in effect for `tl` requests when it was not intended to be.

Reproducer:

INPUT='.TH \\fIfoo\\fP 1 2021-10-04 "groff test suite"
.SH Name
foo \\- a command with a very short name
.sp 50v
.SH "\\fIgroff\\fP integration"
A complicated situation.'

OUTPUT=$(echo "$INPUT" | "$groff" -Tascii -man -rcR=0)





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