https://git.ruby-lang.org/ruby.git/commit/?id=2e29b65109

From 2e29b651093d158c23f6553972769c8ccb7dbd94 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 8 Nov 2019 16:37:42 +0900
Subject: Add file mode to generated files [ci skip]


diff --git a/tool/mk_builtin_binary.rb b/tool/mk_builtin_binary.rb
index a5c962d..eaa560f 100644
--- a/tool/mk_builtin_binary.rb
+++ b/tool/mk_builtin_binary.rb
@@ -17,6 +17,13 @@ RubyVM::each_builtin{|feature, iseq| https://github.com/ruby/ruby/blob/trunk/tool/mk_builtin_binary.rb#L17
 
 $stdout = open('builtin_binary.inc', 'wb')
 
+puts <<H
+// -*- c -*-
+// DO NOT MODIFY THIS FILE DIRECTLY.
+// auto-generated file by #{File.basename(__FILE__)}
+
+H
+
 ary.each{|feature, iseq|
   puts "static const unsigned char #{feature}_bin[] = {"
     dump_bin(iseq)
diff --git a/tool/mk_builtin_loader.rb b/tool/mk_builtin_loader.rb
index aa8e46d..cea4d1f 100644
--- a/tool/mk_builtin_loader.rb
+++ b/tool/mk_builtin_loader.rb
@@ -36,6 +36,7 @@ def mk_builtin_header file https://github.com/ruby/ruby/blob/trunk/tool/mk_builtin_loader.rb#L36
   collect_builtin(RubyVM::InstructionSequence.compile_file(file, false).to_a, bs = {})
 
   open(ofile, 'w'){|f|
+    f.puts "// -*- c -*-"
     f.puts "// DO NOT MODIFY THIS FILE DIRECTLY."
     f.puts "// auto-generated file"
     f.puts "//   by #{__FILE__}"
-- 
cgit v0.10.2


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