Fix bugs in JSON language

* Fix numbers to include negative numbers.
* Remove hexidecimal from numbers it is not a valid value.
* Remove ) and ; from punctuation they are not valid punctuation.
* Include missing tests for punctuation and operators.

components/prism-json.js

@@ -4,8 +4,8 @@ Prism.languages.json = {
 		pattern: /"(?:\\.|[^\\"\r\n])*"(?!\s*:)/,
 		greedy: true
 	},
-	'number': /\b0x[\dA-Fa-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,
-	'punctuation': /[{}[\]);,]/,
+	'number': /-?\d+\.?\d*([Ee][+-]?\d+)?/,
+	'punctuation': /[{}[\],]/,
 	'operator': /:/g,
 	'boolean': /\b(?:true|false)\b/i,
 	'null': /\bnull\b/i

tests/languages/json/number_feature.test

@@ -4,6 +4,9 @@
 5.0e8
 0.2E+2
 47e-5
+-1.23
+-2.34E33
+-4.34E-33
 
 ----------------------------------------------------
 
@@ -13,9 +16,12 @@
 	["number", "3.14159"],
 	["number", "5.0e8"],
 	["number", "0.2E+2"],
-	["number", "47e-5"]
+	["number", "47e-5"],
+	["number", "-1.23"],
+	["number", "-2.34E33"],
+	["number", "-4.34E-33"]
 ]
 
 ----------------------------------------------------
 
-Checks for numbers.
+Checks for numbers.

tests/languages/json/operator_feature.test

@@ -0,0 +1,11 @@
+:
+
+----------------------------------------------------
+
+[
+	["operator", ":"]
+]
+
+----------------------------------------------------
+
+Checks for all operators.

tests/languages/json/punctuation_feature.test

@@ -0,0 +1,20 @@
+{}
+{ }
+[]
+],
+},
+,
+
+----------------------------------------------------
+
+[
+	["punctuation", "{"],  ["punctuation", "}"],
+	["punctuation", "{"],  ["punctuation", "}"],
+	["punctuation", "["],  ["punctuation", "]"],
+	["punctuation", "]"],  ["punctuation", ","],
+	["punctuation", "}"],  ["punctuation", ","],
+	["punctuation", ","]
+]
+----------------------------------------------------
+
+Checks for punctuation.

tests/languages/json/string_feature.test

@@ -24,4 +24,4 @@
 
 ----------------------------------------------------
 
-Checks for strings.
+Checks for strings.