Add vscode extension, command line argument, and positioned error handling.

newt-vscode/syntaxes/newt.tmLanguage.json

@@ -0,0 +1,48 @@
+{
+  "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
+  "name": "newt",
+  "scopeName": "source.newt",
+  "patterns": [
+	{
+		"name": "comment.block.newt",
+		"begin": "/-",
+		"end": "`-/",
+		"contentName": "comment.block.newt"
+	},
+	{
+      "name": "comment.line.newt",
+      "begin": "--",
+      "end": "\\n"
+  },
+	{
+      "name": "variable.other.constant",
+      "match": "([\\w]+)\\."
+    },
+    {
+      "name": "entity.name.variable",
+      "match": "\\.([\\w]+)"
+    },
+	{
+		"name": "punctuation",
+		"match": ":|=>|\\"
+	},
+    {
+      "name": "keyword.other.operator.newt",
+      "match": "[\\p{Math}:!#$%&*+.,/<=>?@\\^|-]+"
+    },
+
+    {
+      "name": "keyword.command.newt",
+      "match": "\\b(module)\\b"
+    },
+    {
+      "name": "keyword.newt",
+      "match": "\\b(data)\\b"
+    },
+    // {
+    //   "name": "variable.other.constant.newt",
+    //   "match": "\\b(Type|Id|refl|sym|Gel|ungel)\\b",
+	  // "comment": "These are in the emacs mode, but some are user defined"
+    // }
+  ]
+}