Fixed grammar to account for d8 not being a name

app/imports/constants/VARIABLE_NAME_REGEX.js

@@ -1,4 +1,4 @@
 // Must contain a letter, and be made of word characters only
-const VARIABLE_NAME_REGEX = /^[a-zA-Z~][a-zA-Z_0-9]+$/i;
+const VARIABLE_NAME_REGEX = /^[~#]?[a-zA-Z]*[a-ce-zA-Z][a-zA-Z0-9_]*$/i;
 
 export default VARIABLE_NAME_REGEX;

app/imports/parser/grammar.js

@@ -13,7 +13,7 @@ function id(x) { return x[0]; }
       value: s => s.slice(1, -1).replace('\\n', '\n'),
     },
     name: {
-      match: /[a-zA-Z~#][a-zA-Z0-9_]+/,
+      match: /[~#]?[a-zA-Z]*[a-ce-zA-Z][a-zA-Z0-9_]*/,
       type: moo.keywords({
         'keywords': ['true', 'false'],
       }),

app/imports/parser/grammar.ne

@@ -11,7 +11,7 @@
       value: s => s.slice(1, -1).replace('\\n', '\n'),
     },
     name: {
-      match: /[a-zA-Z~#][a-zA-Z0-9_]+/,
+      match: /[~#]?[a-zA-Z]*[a-ce-zA-Z][a-zA-Z0-9_]*/,
       type: moo.keywords({
         'keywords': ['true', 'false'],
       }),