diff --git a/components/prism-io.js b/components/prism-io.js
index d589496b6a..c259eaa010 100644
--- a/components/prism-io.js
+++ b/components/prism-io.js
@@ -26,6 +26,6 @@ Prism.languages.io = {
 	'builtin':/\b(?:Array|AudioDevice|AudioMixer|Block|Box|Buffer|CFunction|CGI|Color|Curses|DBM|DNSResolver|DOConnection|DOProxy|DOServer|Date|Directory|Duration|DynLib|Error|Exception|FFT|File|Fnmatch|Font|Future|GL|GLE|GLScissor|GLU|GLUCylinder|GLUQuadric|GLUSphere|GLUT|Host|Image|Importer|LinkList|List|Lobby|Locals|MD5|MP3Decoder|MP3Encoder|Map|Message|Movie|Notification|Number|Object|OpenGL|Point|Protos|Regex|SGML|SGMLElement|SGMLParser|SQLite|Server|Sequence|ShowMessage|SleepyCat|SleepyCatCursor|Socket|SocketManager|Sound|Soup|Store|String|Tree|UDPSender|UPDReceiver|URL|User|Warning|WeakLink|Random|BigNum|Sequence)\b/,
 	'boolean': /\b(?:true|false|nil)\b/,
 	'number': /\b0x[\da-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:e-?\d+)?/i,
-	'operator': /[=!*/%+-^&|]=|>>?=?|<<?=?|:?:?=|\+\+?|--?|\*\*?|\/\/?|%|\|\|?|&&?|\b(?:return|and|or|not)\b|@@?|\?\??|\.\./,
+	'operator': /[=!*/%+\-^&|]=|>>?=?|<<?=?|:?:?=|\+\+?|--?|\*\*?|\/\/?|%|\|\|?|&&?|\b(?:return|and|or|not)\b|@@?|\?\??|\.\./,
 	'punctuation': /[{}[\];(),.:]/
 };
diff --git a/components/prism-io.min.js b/components/prism-io.min.js
index defb4cc6a6..4e62e5506a 100644
--- a/components/prism-io.min.js
+++ b/components/prism-io.min.js
@@ -1 +1 @@
-Prism.languages.io={comment:[{pattern:/(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,lookbehind:!0},{pattern:/(^|[^\\])\/\/.*/,lookbehind:!0},{pattern:/(^|[^\\])#.*/,lookbehind:!0}],"triple-quoted-string":{pattern:/"""(?:\\[\s\S]|(?!""")[^\\])*"""/,greedy:!0,alias:"string"},string:{pattern:/"(?:\\.|[^\\\r\n"])*"/,greedy:!0},keyword:/\b(?:activate|activeCoroCount|asString|block|break|catch|clone|collectGarbage|compileString|continue|do|doFile|doMessage|doString|else|elseif|exit|for|foreach|forward|getSlot|getEnvironmentVariable|hasSlot|if|ifFalse|ifNil|ifNilEval|ifTrue|isActive|isNil|isResumable|list|message|method|parent|pass|pause|perform|performWithArgList|print|println|proto|raise|raiseResumable|removeSlot|resend|resume|schedulerSleepSeconds|self|sender|setSchedulerSleepSeconds|setSlot|shallowCopy|slotNames|super|system|then|thisBlock|thisContext|call|try|type|uniqueId|updateSlot|wait|while|write|yield)\b/,builtin:/\b(?:Array|AudioDevice|AudioMixer|Block|Box|Buffer|CFunction|CGI|Color|Curses|DBM|DNSResolver|DOConnection|DOProxy|DOServer|Date|Directory|Duration|DynLib|Error|Exception|FFT|File|Fnmatch|Font|Future|GL|GLE|GLScissor|GLU|GLUCylinder|GLUQuadric|GLUSphere|GLUT|Host|Image|Importer|LinkList|List|Lobby|Locals|MD5|MP3Decoder|MP3Encoder|Map|Message|Movie|Notification|Number|Object|OpenGL|Point|Protos|Regex|SGML|SGMLElement|SGMLParser|SQLite|Server|Sequence|ShowMessage|SleepyCat|SleepyCatCursor|Socket|SocketManager|Sound|Soup|Store|String|Tree|UDPSender|UPDReceiver|URL|User|Warning|WeakLink|Random|BigNum|Sequence)\b/,boolean:/\b(?:true|false|nil)\b/,number:/\b0x[\da-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:e-?\d+)?/i,operator:/[=!*/%+-^&|]=|>>?=?|<<?=?|:?:?=|\+\+?|--?|\*\*?|\/\/?|%|\|\|?|&&?|\b(?:return|and|or|not)\b|@@?|\?\??|\.\./,punctuation:/[{}[\];(),.:]/};
\ No newline at end of file
+Prism.languages.io={comment:[{pattern:/(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,lookbehind:!0},{pattern:/(^|[^\\])\/\/.*/,lookbehind:!0},{pattern:/(^|[^\\])#.*/,lookbehind:!0}],"triple-quoted-string":{pattern:/"""(?:\\[\s\S]|(?!""")[^\\])*"""/,greedy:!0,alias:"string"},string:{pattern:/"(?:\\.|[^\\\r\n"])*"/,greedy:!0},keyword:/\b(?:activate|activeCoroCount|asString|block|break|catch|clone|collectGarbage|compileString|continue|do|doFile|doMessage|doString|else|elseif|exit|for|foreach|forward|getSlot|getEnvironmentVariable|hasSlot|if|ifFalse|ifNil|ifNilEval|ifTrue|isActive|isNil|isResumable|list|message|method|parent|pass|pause|perform|performWithArgList|print|println|proto|raise|raiseResumable|removeSlot|resend|resume|schedulerSleepSeconds|self|sender|setSchedulerSleepSeconds|setSlot|shallowCopy|slotNames|super|system|then|thisBlock|thisContext|call|try|type|uniqueId|updateSlot|wait|while|write|yield)\b/,builtin:/\b(?:Array|AudioDevice|AudioMixer|Block|Box|Buffer|CFunction|CGI|Color|Curses|DBM|DNSResolver|DOConnection|DOProxy|DOServer|Date|Directory|Duration|DynLib|Error|Exception|FFT|File|Fnmatch|Font|Future|GL|GLE|GLScissor|GLU|GLUCylinder|GLUQuadric|GLUSphere|GLUT|Host|Image|Importer|LinkList|List|Lobby|Locals|MD5|MP3Decoder|MP3Encoder|Map|Message|Movie|Notification|Number|Object|OpenGL|Point|Protos|Regex|SGML|SGMLElement|SGMLParser|SQLite|Server|Sequence|ShowMessage|SleepyCat|SleepyCatCursor|Socket|SocketManager|Sound|Soup|Store|String|Tree|UDPSender|UPDReceiver|URL|User|Warning|WeakLink|Random|BigNum|Sequence)\b/,boolean:/\b(?:true|false|nil)\b/,number:/\b0x[\da-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:e-?\d+)?/i,operator:/[=!*/%+\-^&|]=|>>?=?|<<?=?|:?:?=|\+\+?|--?|\*\*?|\/\/?|%|\|\|?|&&?|\b(?:return|and|or|not)\b|@@?|\?\??|\.\./,punctuation:/[{}[\];(),.:]/};
\ No newline at end of file