runtime(doc): disable color codes when generating ascii man pages in Makefile

Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/doc/Makefile b/runtime/doc/Makefile
index 5092f822d0d9b6a1598c8997ba133aede53845aa..47bf385ca93eaa4862914fd3f5921f9ac6248651 100644 (file)
--- a/runtime/doc/Makefile
+++ b/runtime/doc/Makefile
@@ -35,19 +35,19 @@ doctags: doctags.c
        $(CC) doctags.c -o doctags
 
 vim.man: vim.1
-       nroff -man $? | sed -e s/.\b//g > $@
+       nroff -c -man $? | sed -e s/.\b//g > $@
 
 evim.man: evim.1
-       nroff -man $? | sed -e s/.\b//g > $@
+       nroff -c -man $? | sed -e s/.\b//g > $@
 
 vimdiff.man: vimdiff.1
-       nroff -man $? | sed -e s/.\b//g > $@
+       nroff -c -man $? | sed -e s/.\b//g > $@
 
 vimtutor.man: vimtutor.1
-       nroff -man $? | sed -e s/.\b//g > $@
+       nroff -c -man $? | sed -e s/.\b//g > $@
 
 xxd.man: xxd.1
-       nroff -man $? | sed -e s/.\b//g > $@
+       nroff -c -man $? | sed -e s/.\b//g > $@
 
 # Awk version of .txt to .html conversion.
 html: noerrors tags $(HTMLS)