-MANPAGES_XML = $(patsubst %.8,%.xml,$(MANPAGES))
-MANPAGES_HTML = $(patsubst %.xml,%.html,$(MANPAGES_XML))
+EXTRA_DIST += \
+ man/include-color.txt \
+ man/include-description.txt
+
+MANPAGES_TXT = $(patsubst %.8,%.txt,$(MANPAGES))
+MANPAGES_HTML = $(patsubst %.txt,%.html,$(MANPAGES_TXT))
+MANPAGES_XML = $(patsubst %.txt,%.xml,$(MANPAGES_TXT))