Use a single tab field separator in keywords.txt

Each field of keywords.txt is separated by a single true tab. When you use multiple tabs it causes the field to be interpreted as empty. On Arduino IDE 1.6.5 and newer an empty KEYWORD_TOKENTYPE causes the default editor.function.style coloration to be used (as with KEYWORD2, KEYWORD3, LITERAL2). On Arduino IDE 1.6.4 and older it causes the keyword to not be recognized for any special coloration.

Reference:
https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5:-Library-specification#keywords

Author: per1234

keywords.txt

@@ -1,13 +1,13 @@
-Tasker		KEYWORD1
+Tasker	KEYWORD1
 
 setTimeout	KEYWORD2
 setInterval	KEYWORD2
 setRepeated	KEYWORD2
-cancel		KEYWORD2
+cancel	KEYWORD2
 clearTimeout	KEYWORD2
 clearInterval	KEYWORD2
 scheduledIn	KEYWORD2
-loop		KEYWORD2
+loop	KEYWORD2
 isPrioritized	KEYWORD2
 setPrioritized	KEYWORD2