Scope magic constants as language variables (like self)

myst.sublime-syntax

@@ -10,6 +10,7 @@ scope: source.myst
 variables:
   def_op: '\!|\+|\-|\*|\/|\%|\[\]=?|==|!='
   identifier: '([a-zA-Z][a-zA-Z0-9]*|_[a-zA-Z0-9]*)'
+  magic_constants: '__LINE__|__FILE__|__DIR__'
 contexts:
   main:
     - include: comments
@@ -56,6 +57,8 @@ contexts:
     - match: '\{'
       scope: meta.brackets punctuation.section.brackets.begin.myst
       push: map_literal
+    - match: self|{{magic_constants}}
+      scope: variable.language.myst
     - match: '\b[0-9][_0-9]*\.[0-9][_0-9]*\b'
       scope: constant.numeric.float.myst
     - match: '\b[0-9][_0-9]*\b'
@@ -67,8 +70,6 @@ contexts:
     - match: \"
       scope: punctuation.definition.string.begin.myst
       push: string
-    - match: self
-      scope: variable.language.myst
     - match: '(@)([_a-z][_a-zA-Z0-9]*)'
       captures:
         1: punctuation.definition.variable.myst

sample.mt

@@ -62,6 +62,10 @@ deftype Person
   def [](index); end
   def []=(index, other); end
 
+  __LINE__
+  __FILE__
+  __DIR__
+
 
   def matched(%Thing{name}, [a,b] =: foo, <(a + b)>)
     foo.map{ |_a, &block| a * 2.34 }