Fix message iterator each without given block.

Author: gemmaro

CHANGELOG.md

@@ -2,7 +2,8 @@
 
 ## Unreleased
 
-- Fix file each message without given block.
+- Fix file each message method and message iterator each method
+  without given block.
 
 ## CRuby and mruby version 0.3.0 - 2026-03-17
 

mrblib/mrb_gettextpo_common.rb

@@ -45,7 +45,12 @@ def self.new # :nodoc:
             "please use other methods instead, such as GettextPO::File#message_iterator"
     end
 
-    def each # yields: message
+    # call-seq:
+    #   each { |message| ... }
+    #   each -> Enumerator
+    def each
+      block_given? or return enum_for
+
       while true
         begin
           yield self.next

test/message_iterator.rb

@@ -33,10 +33,15 @@
 
 assert 'each' do
   path = File.expand_path(File.join(__FILE__, "../../test.cruby/resources/ok.po"))
-  iterator = GettextPO::File.read(path).message_iterator
+  file = GettextPO::File.read(path)
+  iterator = file.message_iterator
   messages = []
   iterator.each { |message| messages << message }
   assert_equal 2, messages.size
+
+  iterator = file.message_iterator
+  assert_equal ["", "msgid1"], iterator.each.map { |message| message.msgid }
+
   true
 end