--- a/editor/libeditor/EditAction.h
+++ b/editor/libeditor/EditAction.h
@@ -53,17 +53,20 @@ enum class EditSubAction : int32_t
   eDeleteSelectedContent,
 
   // eSetTextProperty indicates to set a style from text.
   eSetTextProperty,
 
   // eRemoveTextProperty indicates to remove a style from text.
   eRemoveTextProperty,
 
-  outputText,
+  // eComputeTextToOutput indicates to compute the editor value as plain text
+  // or something requested format.
+  eComputeTextToOutput,
+
   setText,
 
   // HTML editor only actions
   insertBreak = 3000,
   makeList,
   indent,
   outdent,
   align,

--- a/editor/libeditor/HTMLEditRules.cpp
+++ b/editor/libeditor/HTMLEditRules.cpp
@@ -639,17 +639,17 @@ HTMLEditRules::WillDoAction(Selection* a
   MOZ_ASSERT(aCancel);
   MOZ_ASSERT(aHandled);
 
   *aCancel = false;
   *aHandled = false;
 
   // Deal with actions for which we don't need to check whether the selection is
   // editable.
-  if (aInfo.mEditSubAction == EditSubAction::outputText ||
+  if (aInfo.mEditSubAction == EditSubAction::eComputeTextToOutput ||
       aInfo.mEditSubAction == EditSubAction::eUndo ||
       aInfo.mEditSubAction == EditSubAction::eRedo) {
     return TextEditRules::WillDoAction(aSelection, aInfo, aCancel, aHandled);
   }
 
   AutoSafeEditorData setData(*this, *mHTMLEditor, *aSelection);
 
   // Nothing to do if there's no selection to act on

--- a/editor/libeditor/TextEditRules.cpp
+++ b/editor/libeditor/TextEditRules.cpp
@@ -345,17 +345,17 @@ TextEditRules::WillDoAction(Selection* a
     case EditSubAction::eUndo:
       return WillUndo(aCancel, aHandled);
     case EditSubAction::eRedo:
       return WillRedo(aCancel, aHandled);
     case EditSubAction::eSetTextProperty:
       return WillSetTextProperty(aCancel, aHandled);
     case EditSubAction::eRemoveTextProperty:
       return WillRemoveTextProperty(aCancel, aHandled);
-    case EditSubAction::outputText:
+    case EditSubAction::eComputeTextToOutput:
       return WillOutputText(aInfo.outputFormat, aInfo.outString, aInfo.flags,
                             aCancel, aHandled);
     case EditSubAction::insertElement:
       // i had thought this would be html rules only.  but we put pre elements
       // into plaintext mail when doing quoting for reply!  doh!
       return WillInsert(aCancel);
     default:
       return NS_ERROR_FAILURE;

--- a/editor/libeditor/TextEditRules.h
+++ b/editor/libeditor/TextEditRules.h
@@ -536,17 +536,17 @@ public:
   EditSubAction mEditSubAction;
 
   // EditSubAction::eInsertText / EditSubAction::eInsertTextComingFromIME
   const nsAString* inString;
   nsAString* outString;
   const nsAString* outputFormat;
   int32_t maxLength;
 
-  // EditSubAction::outputText
+  // EditSubAction::eComputeTextToOutput
   uint32_t flags;
 
   // EditSubAction::eDeleteSelectedContent
   nsIEditor::EDirection collapsedAction;
   nsIEditor::EStripWrappers stripWrappers;
 
   // EditSubAction::removeList
   bool bOrdered;

--- a/editor/libeditor/TextEditor.cpp
+++ b/editor/libeditor/TextEditor.cpp
@@ -1753,17 +1753,17 @@ TextEditor::GetAndInitDocEncoder(const n
 NS_IMETHODIMP
 TextEditor::OutputToString(const nsAString& aFormatType,
                            uint32_t aFlags,
                            nsAString& aOutputString)
 {
   // Protect the edit rules object from dying
   RefPtr<TextEditRules> rules(mRules);
 
-  EditSubActionInfo subActionInfo(EditSubAction::outputText);
+  EditSubActionInfo subActionInfo(EditSubAction::eComputeTextToOutput);
   subActionInfo.outString = &aOutputString;
   subActionInfo.flags = aFlags;
   subActionInfo.outputFormat = &aFormatType;
   Selection* selection = GetSelection();
   if (NS_WARN_IF(!selection)) {
     return NS_ERROR_FAILURE;
   }
   bool cancel, handled;