[man pages]: Migrate man(7) cross refs to `MR`.

 # Handle simplest case: ".IR foo (1)".
s/^.[BI]R \(\\%\)*\([@_[:alnum:]\\-]\+\) (\(@MAN[157]EXT@\))$/.MR \2 \3/
s/^.[BI]R \(\\%\)*\([@_[:alnum:]\\-]\+\) (\([1-8a-z]\+\))$/.MR \2 \3/
 # Handle case: trailing puncutation, e.g., ".IR foo (1),".
s/^.[BI]R \(\\%\)*\([@_[:alnum:]\\-]\+\) (\(@MAN[157]EXT@\))\([^[:space:]]\+\)/.MR \2 \3 \4/
s/^.[BI]R \(\\%\)*\([@_[:alnum:]\\-]\+\) (\([1-8a-z]\+\))\([^[:space:]]\+\)/.MR \2 \3 \4/
 # Handle case: 3rd+ arguments or trailing comments.  This case is rare
 # and will require manual fixup if there are 4+ arguments to MR.  Use
 # groff -man -rCHECKSTYLE=1 to have them automatically reported.
s/^.[BI]R \(\\%\)*\([@_[:alnum:]\\-]\+\) (\(@MAN[157]EXT@\))\( .*\)/.MR \2 \3\4/
s/^.[BI]R \(\\%\)*\([@_[:alnum:]\\-]\+\) (\([1-8a-z]\+\))\( .*\)/.MR \2 \3\4/

1 files changed, 4 insertions, 4 deletions

diff --git a/contrib/mom/groff_mom.7.man b/contrib/mom/groff_mom.7.man
index a1cbee0d7..65a042878 100644
--- a/contrib/mom/groff_mom.7.man
+++ b/contrib/mom/groff_mom.7.man
@@ -109,7 +109,7 @@ documents with a minimum of typesetting intervention.
 .
 .P
 Files processed with
-.BR pdfmom (@MAN1EXT@)
+.MR pdfmom @MAN1EXT@
 with or without the
 .RI \-T ps
 option, produce
@@ -3397,9 +3397,9 @@ You can browse it interactively with \[lq]info groff\[rq].
 .
 .
 .P
-.IR pdfmom (@MAN1EXT@),
-.IR groff (@MAN1EXT@),
-.IR \%@g@troff (@MAN1EXT@)
+.MR pdfmom @MAN1EXT@ ,
+.MR groff @MAN1EXT@ ,
+.MR @g@troff @MAN1EXT@
 .
 .
 .\" Restore compatibility mode (for, e.g., Solaris 10/11).