Add message each flags methods.

Author: gemmaro

CHANGELOG.md

@@ -2,7 +2,9 @@
 
 ## Unreleased
 
-- Add `GettextPO::File#each_message` method.
+- Add `GettextPO::File#each_message`,
+  `GettextPO::Message#each_workflow_flag`, and
+  `GettextPO::Message#each_sticky_flag` methods.
 
 ## CRuby version 0.2.1 - 2026-03-16
 

ext/gettextpo/gettextpo.c

@@ -487,6 +487,11 @@ UPDATE_FLAG (workflow);
 
 /**
  * Document-method: workflow_flag_iterator
+ * call-seq: workflow_flag_iterator -> GettextPO::FlagIterator
+ *
+ * You may find it handy to use the #workflow_flag_iterator method to
+ * iterate over the sticky flag.  This is for more versatile
+ * manipulation.
  */
 FLAG_ITER (workflow);
 
@@ -565,6 +570,11 @@ UPDATE_FLAG (sticky);
 
 /**
  * Document-method: sticky_flag_iterator
+ * call-seq: sticky_flag_iterator -> GettextPO::FlagIterator
+ *
+ * You may find it handy to use the #sticky_flag_iterator method to
+ * iterate over the sticky flag.  This is for more versatile
+ * manipulation.
  */
 FLAG_ITER (sticky);
 #endif

mrblib/mrb_gettextpo_common.rb

@@ -76,6 +76,28 @@ def file_positions
       end
       positions
     end
+
+    def each_sticky_flag # yields: flag
+      iter = sticky_flag_iterator
+      while true
+        begin
+          yield iter.next
+        rescue StopIteration
+          return
+        end
+      end
+    end
+
+    def each_workflow_flag # yields: flag
+      iter = workflow_flag_iterator
+      while true
+        begin
+          yield iter.next
+        rescue StopIteration
+          return
+        end
+      end
+    end
   end
 
   class File