More odoc syntax color (ocamllabs#2029)

* Recursive math braces

* Fix links

* Changelog

Author: dlesbre

CHANGELOG.md

@@ -3,6 +3,8 @@
 ## Unreleased
 
 - Add syntax highlighting support for Rocq 9.0 dune plugin. (#2026)
+- Fix syntax highlighting for odoc links and odoc math blocks with deeply nested
+  braces (#2029)
 
 ## 2.0.1
 

syntaxes/ocamldoc.json

@@ -191,15 +191,22 @@
           "patterns": [{ "include": "#lighttable" }]
         },
         {
-          "comment": "ocamldoc links",
-          "begin": "(?<!\\\\){({:[[:space:]].*?})",
+          "comment": "ocamldoc links with alt-text",
+          "begin": "(?<!\\\\){({:.*?})",
           "beginCaptures": {
             "1": { "name": "string.other.link.title.markdown.ocamldoc" }
           },
           "end": "(?<!\\\\)\\}",
           "patterns": [{ "include": "#markup" }],
           "name": "markup.underline.link.ocamldoc meta.link.ocamldoc"
         },
+        {
+          "comment": "ocamldoc links",
+          "match": "(?<!\\\\)({:.*?})",
+          "captures": {
+            "1": { "name": "string.other.link.title.markdown.ocamldoc" }
+          }
+        },
         {
           "comment": "ocamldoc latex",
           "begin": "(?<!\\\\){\\%([[:space:]]|latex:)",
@@ -307,7 +314,8 @@
       "patterns": [
         {
           "begin": "(?<!\\\\){",
-          "end": "(?<!\\\\)\\}"
+          "end": "(?<!\\\\)\\}",
+          "patterns": [{ "include": "#braces" }]
         }
       ]
     }