Add builtin alias for Eiffel class-name highlighting

components/prism-eiffel.js

@@ -14,7 +14,10 @@ Prism.languages.eiffel = {
 	'keyword': /\b(?:across|agent|alias|all|and|attached|as|assign|attribute|check|class|convert|create|Current|debug|deferred|detachable|do|else|elseif|end|ensure|expanded|export|external|feature|from|frozen|if|implies|inherit|inspect|invariant|like|local|loop|not|note|obsolete|old|once|or|Precursor|redefine|rename|require|rescue|Result|retry|select|separate|some|then|undefine|until|variant|Void|when|xor)\b/i,
 	'boolean': /\b(?:True|False)\b/i,
 	// Convention: class-names are always all upper-case characters
-	'class-name': /\b[A-Z][\dA-Z_]*\b/g,
+	'class-name': {
+		'pattern': /\b[A-Z][\dA-Z_]*\b/g,
+		'alias': 'builtin'
+	},
 	'number': [
 		// hexa | octal | bin
 		/\b0[xcb][\da-f](?:_*[\da-f])*\b/i,