From 02f687dfa6dad97fea7bbbb0846d36d8f83bdcaa Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Tue, 3 Nov 2020 13:46:57 -0500
Subject: add preamble

---
 Makefile      | 5 ++++-
 add_common.sh | 8 ++++++++
 add_output.sh | 1 +
 pre.m4        | 2 ++
 4 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 add_common.sh
 create mode 100644 pre.m4

diff --git a/Makefile b/Makefile
index 4c0e7af..01eb430 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,11 @@
 .POSIX:
 
 OUTPUTS=text.m4 html.m4
-m4n: m4n.sh add_output.sh $(OUTPUTS)
+COMMON=pre.m4
+
+m4n: m4n.sh add_output.sh $(OUTPUTS) pre.m4
 	printf '#!/bin/sh\nset -e\n\n' > $@
+	for m4 in $(COMMON); do /bin/sh ./add_common.sh $$m4; done >> $@
 	for m4 in $(OUTPUTS); do /bin/sh ./add_output.sh $$m4; done >> $@
 	cat m4n.sh >> $@
 	chmod +x $@
diff --git a/add_common.sh b/add_common.sh
new file mode 100644
index 0000000..c806b11
--- /dev/null
+++ b/add_common.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+eof="$(echo EOF_$1 | tr '.[[:lower:]]' '_[[:upper:]]')"
+
+printf '%s() {\n' "$(echo $1 | tr . _)"
+printf 'uudecode -o- << %s\n' $eof
+uuencode -m $1 < $1
+printf '%s\n}\n\n' $eof
diff --git a/add_output.sh b/add_output.sh
index b7e3275..efbe7f9 100644
--- a/add_output.sh
+++ b/add_output.sh
@@ -3,6 +3,7 @@
 eof="$(echo EOF_$1 | tr '.[[:lower:]]' '_[[:upper:]]')"
 
 printf '%s() {\n' "$(echo $1 | tr . _)"
+printf 'pre_m4\n'
 printf 'cat $1\n'
 printf 'uudecode -o- << %s\n' $eof
 uuencode -m $1 < $1
diff --git a/pre.m4 b/pre.m4
new file mode 100644
index 0000000..6fbc05f
--- /dev/null
+++ b/pre.m4
@@ -0,0 +1,2 @@
+divert(-1)
+changecom()
-- 
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