[bug #59463] doc/doc.am: use "-Kutf8" instead of '-k'

[Bjarni Ingi Gislason]

URL:
  <https://savannah.gnu.org/bugs/?59463>

                 Summary: doc/doc.am: use "-Kutf8" instead of '-k'
                 Project: GNU troff
            Submitted by: bjarniig
            Submitted on: Sat 14 Nov 2020 12:31:44 AM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: Build/Installation
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None

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Details:

doc/doc.am: use "-Kutf8" instead of '-k'

  When the encoding is known, it should be used.
That uses less resources and produces less heat.

  This will also matter,
when "preconv" no longer will be the first command in the pipeline
"groff" produces with the option '-s', see bug #59442 (and #55334).

Lines to change:

1)

        && $(DOC_GROFF) -k -Tutf8 -ge -me >$@

2)

        && $(DOC_GROFF) -k -Tps -ge -me >$@






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