Use `$year', not `year' as expr arg.

diff --git a/doc/mdate-sh b/doc/mdate-sh
index 29e5fbb7b80f7e3e83d31616b0cfc6b8c8f6c4b7..4d38433a916b0ab374e393e224753525ed79e12d 100755 (executable)
--- a/doc/mdate-sh
+++ b/doc/mdate-sh
@@ -82,7 +82,7 @@ case $3 in
        # be used for file modified in the last year.
        if (expr $nummonth \> $nummonthtod) > /dev/null;
        then
-        year=`expr year - 1`
+        year=`expr $year - 1`
        fi
        ;;
   *) year=$3;;