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-rw-r--r--src/utils/tfmtodit/tfmtodit.1.man13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/utils/tfmtodit/tfmtodit.1.man b/src/utils/tfmtodit/tfmtodit.1.man
index 3bc5ad092..eba2044b8 100644
--- a/src/utils/tfmtodit/tfmtodit.1.man
+++ b/src/utils/tfmtodit/tfmtodit.1.man
@@ -32,6 +32,19 @@ and
.do nr *groff_tfmtodit_1_man_C \n[.cp]
.cp 0
.
+.\" Define fallback for groff 1.23's MR macro if the system lacks it.
+.de @@
+. de MR
+. ie \n(.$=1 \
+. I %\$1
+. el \
+. IR %\$1 (\$2)\$3
+. \\.
+..
+.if \n(.g .if !d MR .@@
+.if !\n(.g .@@
+.rm @@
+.
.
.\" ====================================================================
.\" Definitions