>From 0faa93991f6e835ae7eaa66e4367991402db32ca Mon Sep 17 00:00:00 2001
From: Bernhard Voelker <address@hidden>
Date: Mon, 17 Aug 2015 22:30:04 +0200
Subject: [PATCH] maint: add syntax check to ensure larger man/*.x files have a
 Copyright

* cfg.mk (sc_man_check_x_copyright): Add rule to ensure that non-trivial
.x files in the 'man/' subdirectory, i.e., files exceeding a line count
of 20 or a byte count of 1000, contain a proper Copyright notice.
---
 cfg.mk | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/cfg.mk b/cfg.mk
index dedb7ac..67f5ae7 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -293,6 +293,21 @@ check-x-vs-1:
 	  | $(ASSORT) -u | diff - $$t || { rm $$t; exit 1; };		\
 	rm $$t
 
+# Ensure that non-trivial .x files in the 'man/' subdirectory,
+# i.e., files exceeding a line count of 20 or a byte count of 1000,
+# contain a Copyright notice.
+.PHONY: sc_man_check_x_copyright
+sc_man_check_x_copyright:
+	@t=$@-t;							\
+	cd $(srcdir) && wc -cl man/*.x | head -n-1			\
+	  | awk '$$1 >= 20 || $$2 >= 1000 {print $$3}'			\
+	  | $(ASSORT) > $$t;						\
+	xargs grep -l 'Copyright .* Free Software Foundation' < $$t	\
+	  | $(ASSORT) -u | diff - $$t					\
+	  || { echo  1>&2 '$@: exceeding file size/line count limit'	\
+		  '- please add a copyright note'; rm $$t; exit 1; };	\
+	rm $$t
+
 # Writing a portable rule to generate a manpage like '[.1' would be
 # a nightmare, so filter that out.
 all-progs-but-lbracket = $(filter-out [,$(patsubst src/%,%,$(all_programs)))
-- 
2.1.4