From d9aba4acca69e90891b9ac4b8e0ab962faeb4f0f Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Tue, 24 Jun 2025 10:41:39 -0400
Subject: [PATCH] [mv3] Use custom tokens for YAML document boundaries

---
 platform/mv3/extension/css/develop.css                | 3 +--
 platform/mv3/extension/js/develop.js                  | 9 ++++++---
 platform/mv3/extension/lib/codemirror/codemirror-ubol | 2 +-
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/platform/mv3/extension/css/develop.css b/platform/mv3/extension/css/develop.css
index 665206d00..7f2eb00e8 100644
--- a/platform/mv3/extension/css/develop.css
+++ b/platform/mv3/extension/css/develop.css
@@ -31,8 +31,7 @@ section[data-pane="develop"] > div > * {
     height: 100%;
     }
 
-#cm-container .cm-editor .cm-line:has(.ͼ5),
-#cm-container .cm-editor .cm-line:has(.ͼw) {
+#cm-container .cm-editor .cm-line:has(.yamlboundary) {
     background-image: url('line-hor-dashed.png'), url('line-hor-dashed.png');
     background-position: left 3px, left calc(100% - 3px);
     background-repeat: repeat-x;
diff --git a/platform/mv3/extension/js/develop.js b/platform/mv3/extension/js/develop.js
index f04316504..e36240a27 100644
--- a/platform/mv3/extension/js/develop.js
+++ b/platform/mv3/extension/js/develop.js
@@ -557,9 +557,9 @@ class Editor {
         },
         token: (stream, state) => {
             if ( stream.sol() ) {
-                if ( stream.match(/^---\s*$/) ) { return 'meta'; }
-                if ( stream.match(/^# ---\s*$/) ) { return 'meta comment'; }
-                if ( stream.match(/\.\.\.\s*$/) ) { return 'meta'; }
+                if ( stream.match(/^---\s*$/) ) { return 'yamlboundary'; }
+                if ( stream.match(/^# ---\s*$/) ) { return 'yamlboundary comment'; }
+                if ( stream.match(/\.\.\.\s*$/) ) { return 'yamlboundary'; }
             }
             const c = stream.peek();
             if ( c === '#' ) {
@@ -597,6 +597,9 @@ class Editor {
         languageData: {
             commentTokens: { line: '#' },
         },
+        tokenTable: [
+            'yamlboundary',
+        ],
     };
 }
 
diff --git a/platform/mv3/extension/lib/codemirror/codemirror-ubol b/platform/mv3/extension/lib/codemirror/codemirror-ubol
index 4352f5727..4bacc0ca7 160000
--- a/platform/mv3/extension/lib/codemirror/codemirror-ubol
+++ b/platform/mv3/extension/lib/codemirror/codemirror-ubol
@@ -1 +1 @@
-Subproject commit 4352f572758bc43ebabddb67b98875e8fde7c297
+Subproject commit 4bacc0ca79f3eb4c6e395bf54d3f5efe4da4e07c