diff --git a/misc.go b/misc.go
index 4d2a5eb..648131a 100644
--- a/misc.go
+++ b/misc.go
@@ -8,13 +8,15 @@ import (
 var whitespaceChars = []rune{' ', '\t', '\n'}
 var digitChars = []rune{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}
 var wordChars = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_")
+var LBRACKET rune = 0xF0000
+var RBRACKET rune = 0xF0001
 
 func dotChars() []rune { // Returns all possible characters represented by the dot metacharacter - this is too tedious to define as a variable, which is why it is a function
 	start := 0x0020
 	end := 0x007E
 	to_return := make([]rune, (end-start)+1)
 	for i := start; i <= end; i++ {
-		to_return = append(to_return, rune(i))
+		to_return[i-start] = rune(i)
 	}
 	return to_return
 }