Fix message each sticky flag without given block.

Author: gemmaro

CHANGELOG.md

@@ -2,8 +2,9 @@
 
 ## Unreleased
 
-- Enable file each message method and message iterator each method
-  flag iterator each method to run without given block.
+- Enable file each message method, message iterator each method flag
+  iterator each method, and message each sticky flag method to run
+  without given block.
 
 ## CRuby and mruby version 0.3.0 - 2026-03-17
 

mrblib/mrb_gettextpo_common.rb

@@ -82,7 +82,12 @@ def file_positions
       positions
     end
 
-    def each_sticky_flag # yields: flag
+    # call-seq:
+    #   each_sticky_flag { |flag| ... }
+    #   each_sticky_flag -> Enumerator
+    def each_sticky_flag
+      block_given? or return enum_for(__method__)
+
       iter = sticky_flag_iterator
       while true
         begin

test.cruby/resources/flag.po

@@ -0,0 +1,3 @@
+#, fuzzy, no-wrap
+msgid "msgid1"
+msgstr "msgstr1"

test/message.rb

@@ -87,3 +87,12 @@
   assert_true message.sticky_flag?('no-wrap')
   true
 end
+
+assert 'each flag' do
+  path = File.expand_path(File.join(__FILE__, "../../test.cruby/resources/flag.po"))
+  iterator = GettextPO::File.read(path).message_iterator
+  message = iterator.next
+  assert_equal ['no-wrap'], message.each_sticky_flag.to_a
+
+  true
+end