From e16c316b52948396eac43ee9d79383274c616256 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 24 May 2010 03:52:46 +0000
Subject: 	* common.mk (change), tool/change_maker.rb: make a brief
 template 	  for ChangeLog.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27987 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog            |  5 +++++
 common.mk            |  4 ++++
 tool/change_maker.rb | 26 ++++++++++++++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100755 tool/change_maker.rb

diff --git a/ChangeLog b/ChangeLog
index f6b525c6d9..7bc887a7a5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon May 24 12:52:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* common.mk (change), tool/change_maker.rb: make a brief template
+	  for ChangeLog.
+
 Mon May 24 09:19:59 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* gc.c (gc_sweep): suppres a warning on VC.
diff --git a/common.mk b/common.mk
index fe56441f1f..8803d9f95c 100644
--- a/common.mk
+++ b/common.mk
@@ -816,6 +816,9 @@ info-libruby_so:
 info-arch:
 	@echo arch=$(arch)
 
+change:
+	$(BASERUBY) -C "$(srcdir)" ./tool/change_maker.rb $(CHANGES) > change.log
+
 help: PHONY
 	@echo "                Makefile of Ruby"
 	@echo ""
@@ -839,6 +842,7 @@ help: PHONY
 	@echo "  install:         install all ruby distributions"
 	@echo "  install-nodoc:   install without rdoc"
 	@echo "  clean:           clean built objects"
+	@echo "  change:          make change log template"
 	@echo "  golf:            for golfers"
 	@echo ""
 	@echo "see DeveloperHowto for more detail: "
diff --git a/tool/change_maker.rb b/tool/change_maker.rb
new file mode 100755
index 0000000000..d039de9909
--- /dev/null
+++ b/tool/change_maker.rb
@@ -0,0 +1,26 @@
+#! ./miniruby
+
+if File.directory?(".svn")
+  cmd = "svn diff"
+elsif File.directory?(".git")
+  cmd = "git diff"
+else
+  abort "does not seem to be under a vcs"
+end
+
+def diff2index(cmd, *argv)
+  path = nil
+  `#{cmd} #{argv.join(" ")}`.split(/\n/).each do |line|
+    case line
+    when /^Index: (\S*)/, /^diff --git [a-z]\/(\S*) [a-z]\/\1/
+      path = $1
+    when /^@@.*@@ +([A-Za-z_][A-Za-z_0-9 ]*[A-Za-z_0-9])/
+      puts "* #{path} (#{$1}):"
+    end
+  end
+  !!path
+end
+
+if !diff2index(cmd, ARGV) and /^git/ =~ cmd
+  diff2index(cmd, "--cached", ARGV)
+end
-- 
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