Merge pull request #170 from aspeddro/fix-char

Close #147

Author: nkrkv

grammar.js

@@ -1454,7 +1454,7 @@ module.exports = grammar({
 
     character: $ => seq(
       "'",
-      choice(/[^\\']/, $.escape_sequence),
+      repeat(choice(/[^\\']/, $.escape_sequence)),
       "'"
     ),
 

test/corpus/literals.txt

@@ -185,6 +185,9 @@ Characters
 '\\'
 'Ж'
 '😬'
+'\o021'
+'\179'
+'\u{1F600}'
 
 ---
 
@@ -193,7 +196,10 @@ Characters
   (expression_statement (character (escape_sequence)))
   (expression_statement (character (escape_sequence)))
   (expression_statement (character))
-  (expression_statement (character)))
+  (expression_statement (character))
+  (expression_statement (character (escape_sequence)))
+  (expression_statement (character (escape_sequence)))
+  (expression_statement (character (escape_sequence))))
 
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 Polyvars