Reintroduce quoted string literal highlighting with correct ID handling (#1871)

* Revert "Remove quoted string literal highlighting from grammar (#1860)"

This reverts commit 19ed469.

* Match opening and closing quoted strings

* Update CHANGELOG

---------

Co-authored-by: Dorian Lesbre <[email protected]>

Author: mlantas

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unreleased
 
 - Add support for quoted string literal brackets (`{|`, `|}`) syntax highlighting and auto-closing pairs
+- Reintroduce quoted string literal highlighting with correct ID handling (#1871)
 
 ## 1.30.1
 

syntaxes/mlx.json

@@ -341,11 +341,27 @@
               "match": "\\\\\""
             }
           ]
+        },
+        {
+          "comment": "quoted string literal",
+          "begin": "\\{([[:lower:]_]*)\\|",
+          "end": "\\|\\1\\}"
         }
       ]
     },
     "strings": {
       "patterns": [
+        {
+          "comment": "quoted string literal",
+          "name": "string.quoted.braced.ocaml",
+          "begin": "\\{(%%?[[:alpha:]_][[:word:]']*(\\.[[:alpha:]_][[:word:]']*)*[[:space:]]*)?([[:lower:]_]*)\\|",
+          "end": "\\|\\3\\}",
+          "beginCaptures": {
+            "1": {
+              "name": "keyword.other.extension.ocaml"
+            }
+          }
+        },
         {
           "comment": "string literal",
           "name": "string.quoted.double.ocaml",

syntaxes/ocaml.json

@@ -168,12 +168,26 @@
           "begin": "\"",
           "end": "\"",
           "patterns": [{ "match": "\\\\\\\\" }, { "match": "\\\\\"" }]
+        },
+        {
+          "comment": "quoted string literal",
+          "begin": "\\{([[:lower:]_]*)\\|",
+          "end": "\\|\\1\\}"
         }
       ]
     },
 
     "strings": {
       "patterns": [
+        {
+          "comment": "quoted string literal",
+          "name": "string.quoted.braced.ocaml",
+          "begin": "\\{(%%?[[:alpha:]_][[:word:]']*(\\.[[:alpha:]_][[:word:]']*)*[[:space:]]*)?([[:lower:]_]*)\\|",
+          "end": "\\|\\3\\}",
+          "beginCaptures": {
+            "1": { "name": "keyword.other.extension.ocaml" }
+          }
+        },
         {
           "comment": "string literal",
           "name": "string.quoted.double.ocaml",