maint.mk: make the news-check rule more configurable

* top/maint.mk (news-check-lines-spec) New variable.
(news-check): Use "sed -n 1,10p" in place of "head".

diff --git a/ChangeLog b/ChangeLog
index 3eb9e3a..edb9122 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-06-08  Peter Simons  <simons@cryp.to>
+
+       maint.mk: make the news-check rule more configurable
+       * top/maint.mk (news-check-lines-spec) New variable.
+       (news-check): Use "sed -n 1,10p" in place of "head".
+
 2010-06-07  Jim Meyering  <meyering@redhat.com>
 
        do-release-commit-and-tag: fix typo in --help

diff --git a/top/maint.mk b/top/maint.mk
index 644fbb6..59e9cb5 100644 (file)
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -103,6 +103,12 @@ endif
 # Override this in cfg.mk if you are using a different format in your
 # NEWS file.
 today = $(shell date +%Y-%m-%d)
+
+# Select which lines of NEWS are searched for $(news-check-regexp).
+# This is a sed line number spec.  The default says that we search
+# lines 1..10 of NEWS for $(news-check-regexp).
+# If you want to search only line 3 or only lines 20-22, use "3" or "20,22".
+news-check-lines-spec ?= 1,10
 news-check-regexp ?= '^\*.* $(VERSION_REGEXP) \($(today)\)'
 
 # Prevent programs like 'sort' from considering distinct strings to be equal.
@@ -874,8 +880,8 @@ sc_makefile_at_at_check:
          && { echo '$(ME): use $$(...), not @...@' 1>&2; exit 1; } || :
 
 news-check: NEWS
-       if head $(srcdir)/NEWS | grep -E $(news-check-regexp)           \
-           >/dev/null; then                                            \
+       if sed -n $(news-check-lines-spec)p $(srcdir)/NEWS              \
+           | grep -E $(news-check-regexp) >/dev/null; then             \
          :;                                                            \
        else                                                            \
          echo 'NEWS: $$(news-check-regexp) failed to match' 1>&2;      \