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

@@ -6,88 +6,88 @@
 # Class (KEYWORD1)
 #######################################
 
-TheThingsNetwork							KEYWORD1
-TheThingsMessage							KEYWORD1
-TheThingsNode									KEYWORD1
+TheThingsNetwork	KEYWORD1
+TheThingsMessage	KEYWORD1
+TheThingsNode	KEYWORD1
 
-ttn_port_t										KEYWORD1
-ttn_response_t								KEYWORD1
-ttn_fp_t											KEYWORD1
+ttn_port_t	KEYWORD1
+ttn_response_t	KEYWORD1
+ttn_fp_t	KEYWORD1
 
 #######################################
 # Methods and Functions (KEYWORD2)
 #######################################
 
-showStatus										KEYWORD2
-onMessage											KEYWORD2
-provision											KEYWORD2
-join													KEYWORD2
-personalize										KEYWORD2
-sendBytes											KEYWORD2
-poll													KEYWORD2
+showStatus	KEYWORD2
+onMessage	KEYWORD2
+provision	KEYWORD2
+join	KEYWORD2
+personalize	KEYWORD2
+sendBytes	KEYWORD2
+poll	KEYWORD2
 
-encodeSensorData							KEYWORD2
-decodeAppData									KEYWORD2
+encodeSensorData	KEYWORD2
+decodeAppData	KEYWORD2
 
-getLight											KEYWORD2
-configLight										KEYWORD2
-getTemperatureAsInt						KEYWORD2
-getTemperatureAsFloat					KEYWORD2
-configTemperature							KEYWORD2
-onTemperatureAlert						KEYWORD2
-configTemperatureAlert				KEYWORD2
-onMotionStart									KEYWORD2
-onMotionStop									KEYWORD2
-isMoving											KEYWORD2
-configMotion									KEYWORD2
-onButtonPress									KEYWORD2
-onButtonRelease								KEYWORD2
-isButtonPressed								KEYWORD2
-getRed												KEYWORD2
-getGreen											KEYWORD2
-getBlue												KEYWORD2
-getColor											KEYWORD2
-colorToString									KEYWORD2
-setRGB												KEYWORD2
-setRed												KEYWORD2
-setGreen											KEYWORD2
-setBlue												KEYWORD2
-setColor											KEYWORD2
-getUSB												KEYWORD2
-getBattery										KEYWORD2
-getVDD    										KEYWORD2
+getLight	KEYWORD2
+configLight	KEYWORD2
+getTemperatureAsInt	KEYWORD2
+getTemperatureAsFloat	KEYWORD2
+configTemperature	KEYWORD2
+onTemperatureAlert	KEYWORD2
+configTemperatureAlert	KEYWORD2
+onMotionStart	KEYWORD2
+onMotionStop	KEYWORD2
+isMoving	KEYWORD2
+configMotion	KEYWORD2
+onButtonPress	KEYWORD2
+onButtonRelease	KEYWORD2
+isButtonPressed	KEYWORD2
+getRed	KEYWORD2
+getGreen	KEYWORD2
+getBlue	KEYWORD2
+getColor	KEYWORD2
+colorToString	KEYWORD2
+setRGB	KEYWORD2
+setRed	KEYWORD2
+setGreen	KEYWORD2
+setBlue	KEYWORD2
+setColor	KEYWORD2
+getUSB	KEYWORD2
+getBattery	KEYWORD2
+getVDD	KEYWORD2
 
-encodeDeviceData							KEYWORD2
-decodeAppData									KEYWORD2
+encodeDeviceData	KEYWORD2
+decodeAppData	KEYWORD2
 
 #######################################
 # Constants (LITERAL1)
 #######################################
 
-TTN_DEFAULT_SF								LITERAL1
-TTN_DEFAULT_FSB								LITERAL1
-TTN_RETX											LITERAL1
-TTN_PWRIDX_868								LITERAL1
-TTN_PWRIDX_915								LITERAL1
-TTN_BUFFER_SIZE								LITERAL1
+TTN_DEFAULT_SF	LITERAL1
+TTN_DEFAULT_FSB	LITERAL1
+TTN_RETX	LITERAL1
+TTN_PWRIDX_868	LITERAL1
+TTN_PWRIDX_915	LITERAL1
+TTN_BUFFER_SIZE	LITERAL1
 TTN_ERROR_SEND_COMMAND_FAILED	LITERAL1
 TTN_ERROR_UNEXPECTED_RESPONSE	LITERAL1
-TTN_SUCCESSFUL_TRANSMISSION		LITERAL1
-TTN_SUCCESSFUL_RECEIVE				LITERAL1
-TTN_FP_EU868									LITERAL1
-TTN_FP_US915									LITERAL1
-TTN_FP_AS920_923							LITERAL1
-TTN_FP_AS923_925							LITERAL1
-TTN_FP_KR920_923							LITERAL1
+TTN_SUCCESSFUL_TRANSMISSION	LITERAL1
+TTN_SUCCESSFUL_RECEIVE	LITERAL1
+TTN_FP_EU868	LITERAL1
+TTN_FP_US915	LITERAL1
+TTN_FP_AS920_923	LITERAL1
+TTN_FP_AS923_925	LITERAL1
+TTN_FP_KR920_923	LITERAL1
 
-TTN_PIN_LED										LITERAL1
+TTN_PIN_LED	LITERAL1
 
-TTN_COLOR											LITERAL1
-TTN_RED												LITERAL1
-TTN_GREEN											LITERAL1
-TTN_BLUE											LITERAL1
-TTN_YELLOW										LITERAL1
-TTN_CYAN											LITERAL1
-TTN_MAGENTA										LITERAL1
-TTN_WHITE											LITERAL1
-TTN_BLACK											LITERAL1
+TTN_COLOR	LITERAL1
+TTN_RED	LITERAL1
+TTN_GREEN	LITERAL1
+TTN_BLUE	LITERAL1
+TTN_YELLOW	LITERAL1
+TTN_CYAN	LITERAL1
+TTN_MAGENTA	LITERAL1
+TTN_WHITE	LITERAL1
+TTN_BLACK	LITERAL1