man: enhance man postprocessing regexp

man/Makefile.in

@@ -173,8 +173,27 @@ define SUBSTVARS
 echo "Generating $@" ; $(SED) -e "s+#VERSION#+$(LVM_VERSION)+;s+#DEFAULT_SYS_DIR#+$(DEFAULT_SYS_DIR)+;s+#DEFAULT_ARCHIVE_DIR#+$(DEFAULT_ARCHIVE_DIR)+;s+#DEFAULT_BACKUP_DIR#+$(DEFAULT_BACKUP_DIR)+;s+#DEFAULT_PROFILE_DIR#+$(DEFAULT_PROFILE_DIR)+;s+#DEFAULT_CACHE_DIR#+$(DEFAULT_CACHE_DIR)+;s+#DEFAULT_LOCK_DIR#+$(DEFAULT_LOCK_DIR)+;s+#CLVMD_PATH#+/data/lvmtest/usr/sbin/clvmd+;s+#LVM_PATH#+/data/lvmtest/sbin/lvm+;s+#DEFAULT_RUN_DIR#+/var/run/lvm+;s+#DEFAULT_PID_DIR#+/var/run+;s+#SYSTEMD_GENERATOR_DIR#+$(SYSTEMD_GENERATOR_DIR)+;s+#DEFAULT_MANGLING#+$(DEFAULT_MANGLING)+;" $< > $@
 endef
 
+# Escape any '-':
+#
+# - multiple (>= 2)
+# - in ' -'
+# - in (cache|thin)-*
+# - in numerical ranges
+# - in single one in '\\f.-'
 define ESCAPEHYPHENS
-	sed -i "s+\([^\\]\)--+\1\\\-\\\-+g;s+\([^\\]\)-+\1\\\-+g" $@
+sed -i 	-e "s+\([^\\]\)-\{7\}+\1\\\-\\\-\\\-\\\-\\\-\\\-\\\-+g" \
+	-e "s+\([^\\]\)-\{6\}+\1\\\-\\\-\\\-\\\-\\\-\\\-+g" \
+	-e "s+\([^\\]\)-\{5\}+\1\\\-\\\-\\\-\\\-\\\-+g" \
+	-e "s+\([^\\]\)-\{4\}+\1\\\-\\\-\\\-\\\-+g" \
+	-e "s+\([^\\]\)-\{3\}+\1\\\-\\\-\\\-+g" \
+	-e "s+\([^\\]\)-\{2\}+\1\\\-\\\-+g" \
+	-e "s+^-\{2\}+\\\-\\\-+g" \
+	-e "s+ -+ \\\-+g" \
+	-e "s+\(cache\)-\([[:alpha:]]\{1,\}\)+\1\\\-\2+g" \
+	-e "s+\(thin\)-\([[:alpha:]]\{1,\}\)+\1\\\-\2+g" \
+	-e "s+\([0-9]\)-\([0-9]\)+\1\\\-\2+g" \
+	-e "s+\(\\\f.\)-\([^-]\)+\1\\\-\2+g" \
+	-e "s+\([[:digit:]]\{4\}\)\\\-\([[:digit:]]\{2\}\)\\\-\([[:digit:]]\{2\}\)+\1-\2-\3+g" $@
 endef
 
 %.5: $(srcdir)/%.5_main