Fix preproc_def rule

Author: jgonzac

grammar.js

@@ -146,7 +146,7 @@ module.exports = grammar({
       preprocessor('define'),
       field('name', $.identifier),
       field('value', optional($.preproc_arg)),
-      token.immediate(/\r?\n/),
+      token(prec(1, /\r?\n/)), // force newline to win over preproc_arg
     ),
 
     preproc_function_def: $ => seq(

src/grammar.json

@@ -176,10 +176,14 @@
           }
         },
         {
-          "type": "IMMEDIATE_TOKEN",
+          "type": "TOKEN",
           "content": {
-            "type": "PATTERN",
-            "value": "\\r?\\n"
+            "type": "PREC",
+            "value": 1,
+            "content": {
+              "type": "PATTERN",
+              "value": "\\r?\\n"
+            }
           }
         }
       ]