CSS Extras & PHP: Fixed too greedy number token (#2009)

This fixes the too greedy number tokenization of CSS Extras which cause the placeholders of PHP (via markup templating) to be partly tokenized.

The CSS extras number pattern was adjusted to solve the issue.

components/prism-css-extras.js

@@ -72,5 +72,9 @@ Prism.languages.insertBefore('css', 'function', {
 		pattern: /(\d)(?:%|[a-z]+)/,
 		lookbehind: true
 	},
-	'number': /-?[\d.]+/
+	'number': {
+		// 123 -123 .123 -.123 12.3 -12.3
+		pattern: /(^|[^\w.-])-?\d*\.?\d+/,
+		lookbehind: true
+	}
 });

tests/languages/css!+css-extras/number_feature.test

@@ -1,15 +1,66 @@
 42
 3.14159
 -42
--3.14
+-3.14159
+.5
+-.5
+
+/* complex example */
+foo {
+	foo: 0 1em 2ch;
+	bar:-0px 3px;
+	baz:calc(100% - 5px - -4em);
+}
 
 ----------------------------------------------------
 
 [
 	["number", "42"],
 	["number", "3.14159"],
 	["number", "-42"],
-	["number", "-3.14"]
+	["number", "-3.14159"],
+	["number", ".5"],
+	["number", "-.5"],
+
+	["comment", "/* complex example */"],
+	["selector", [
+		"foo"
+	]],
+	["punctuation", "{"],
+
+	["property", "foo"],
+	["punctuation", ":"],
+	["number", "0"],
+	["number", "1"],
+	["unit", "em"],
+	["number", "2"],
+	["unit", "ch"],
+	["punctuation", ";"],
+
+	["property", "bar"],
+	["punctuation", ":"],
+	["number", "-0"],
+	["unit", "px"],
+	["number", "3"],
+	["unit", "px"],
+	["punctuation", ";"],
+
+	["property", "baz"],
+	["punctuation", ":"],
+	["function", "calc"],
+	["punctuation", "("],
+	["number", "100"],
+	["unit", "%"],
+	["operator", "-"],
+	["number", "5"],
+	["unit", "px"],
+	["operator", "-"],
+	["number", "-4"],
+	["unit", "em"],
+	["punctuation", ")"],
+	["punctuation", ";"],
+
+	["punctuation", "}"]
 ]
 
 ----------------------------------------------------

tests/languages/php!+css-extras/issue2008.test

@@ -0,0 +1,44 @@
+<img style="width:<?php echo (80 / count($images)) ?>%"/>
+
+----------------------------------------------------
+
+[
+	["tag", [
+		["tag", [
+			["punctuation", "<"],
+			"img"
+		]],
+		["style-attr", [
+			["attr-name", [
+				["attr-name", [
+					"style"
+				]]
+			]],
+			["punctuation", "=\""],
+			["attr-value", [
+				["property", "width"],
+				["punctuation", ":"],
+				["php", [
+					["delimiter", "<?php"],
+					["keyword", "echo"],
+					["punctuation", "("],
+					["number", "80"],
+					["operator", "/"],
+					["function", "count"],
+					["punctuation", "("],
+					["variable", "$images"],
+					["punctuation", ")"],
+					["punctuation", ")"],
+					["delimiter", "?>"]
+				]],
+				"%"
+			]],
+			["punctuation", "\""]
+		]],
+		["punctuation", "/>"]
+	]]
+]
+
+----------------------------------------------------
+
+Checks for #2008 where a part of markup templating's placeholder was tokenized as `number` by CSS Extras.