Add support for CUE (#1049)

README.md

@@ -372,6 +372,7 @@ CSharp
 CShell
 Css
 Cuda
+CUE
 Cython
 D
 DAML

languages.json

@@ -330,6 +330,17 @@
       "quotes": [["\\\"", "\\\""]],
       "extensions": ["cu"]
     },
+    "Cue": {
+      "name": "CUE",
+      "line_comment": ["//"],
+      "quotes": [
+        ["\\\"", "\\\""],
+        ["'", "'"],
+        ["\\\"\\\"\\\"", "\\\"\\\"\\\""]
+      ],
+      "verbatim_quotes": [["#\\\"", "\\\"#"]],
+      "extensions": ["cue"]
+    },
     "Cython": {
       "line_comment": ["#"],
       "doc_quotes": [["\\\"\\\"\\\"", "\\\"\\\"\\\""], ["'''", "'''"]],

tests/data/cue.cue

@@ -0,0 +1,12 @@
+// 12 lines 8 code 2 comments 2 blanks
+
+// A documentation comment
+map: {
+	normal: "normal string" // inline comment (not counted)
+
+	content: """
+	Multi-line string
+	"""
+	raw: #"A newline is \#n written as "\n"."#
+	byte: '\U0001F604'
+}