Use i flag to simplify some regexps

Author: Golmote

components/prism-asm6502.js

@@ -10,7 +10,7 @@ Prism.languages.asm6502 = {
 		alias: 'property'
 	},
 	'hexnumber': {
-		pattern: /#?\$[\da-fA-F]{2,4}/,
+		pattern: /#?\$[\da-f]{2,4}/i,
 		alias: 'string'
 	},
 	'binarynumber': {
@@ -22,7 +22,7 @@ Prism.languages.asm6502 = {
 		alias: 'string'
 	},
 	'register': {
-		pattern: /\b[xyaXYA]\b/,
+		pattern: /\b[xya]\b/i,
 		alias: 'variable'
 	}
 };

components/prism-asm6502.min.js

@@ -30,7 +30,7 @@ Prism.languages.eiffel = {
 		// hexa | octal | bin
 		/\b0[xcb][\da-f](?:_*[\da-f])*\b/i,
 		// Decimal
-		/(?:\d(?:_*\d)*)?\.(?:(?:\d(?:_*\d)*)?[eE][+-]?)?\d(?:_*\d)*|\d(?:_*\d)*\.?/
+		/(?:\d(?:_*\d)*)?\.(?:(?:\d(?:_*\d)*)?e[+-]?)?\d(?:_*\d)*|\d(?:_*\d)*\.?/i
 	],
 	'punctuation': /:=|<<|>>|\(\||\|\)|->|\.(?=\w)|[{}[\];(),:?]/,
 	'operator': /\\\\|\|\.\.\||\.\.|\/[~\/=]?|[><]=?|[-+*^=~]/

components/prism-eiffel.js

@@ -4,7 +4,7 @@ Prism.languages.graphql = {
 		pattern: /"(?:\\.|[^\\"\r\n])*"/,
 		greedy: true
 	},
-	'number': /(?:\B-|\b)\d+(?:\.\d+)?(?:[eE][+-]?\d+)?\b/,
+	'number': /(?:\B-|\b)\d+(?:\.\d+)?(?:e[+-]?\d+)?\b/i,
 	'boolean': /\b(?:true|false)\b/,
 	'variable': /\$[a-z_]\w*/i,
 	'directive': {