nobu	2017-10-01 11:39:22 +0900 (Sun, 01 Oct 2017)

  New Revision: 60083

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60083

  Log:
    generic_erb.rb: -i option
    
    * tool/generic_erb.rb: -i option to merge multiple template files.

  Modified files:
    trunk/tool/generic_erb.rb
Index: tool/generic_erb.rb
===================================================================
--- tool/generic_erb.rb	(revision 60082)
+++ tool/generic_erb.rb	(revision 60083)
@@ -16,24 +16,29 @@ output = nil https://github.com/ruby/ruby/blob/trunk/tool/generic_erb.rb#L16
 ifchange = nil
 source = false
 color = nil
+templates = []
 
-opt = OptionParser.new do |o|
+ARGV.options do |o|
   o.on('-t', '--timestamp[=PATH]') {|v| timestamp = v || true}
+  o.on('-i', '--input=PATH') {|v| template << v}
   o.on('-o', '--output=PATH') {|v| output = v}
   o.on('-c', '--[no-]if-change') {|v| ifchange = v}
   o.on('-x', '--source') {source = true}
   o.on('--color') {color = true}
   vpath.def_options(o)
   o.order!(ARGV)
+  templates << (ARGV.shift or abort o.to_s) if templates.empty?
 end
 color = Colorize.new(color)
 unchanged = color.pass("unchanged")
 updated = color.fail("updated")
 
-template = ARGV.shift or abort opt.to_s
-erb = ERB.new(File.read(template), nil, '%-')
-erb.filename = template
-result = source ? erb.src : proc{erb.result}.call
+result = templates.map do |template|
+  erb = ERB.new(File.read(template), nil, '%-')
+  erb.filename = template
+  source ? erb.src : proc{erb.result(binding)}.call
+end
+result = result.size == 1 ? result[0] : result.join("")
 if output
   if ifchange and (vpath.open(output, "rb") {|f| f.read} rescue nil) == result
     puts "#{output} #{unchanged}"

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