New Lexer:
/*
	Title: Command Functions
		A wrapper set of functions for commands which have an output variable.

	License: http://www.autohotkey.net/~Titan/license.txt
*/

Functions() {
	Return, true
}

IfBetween(ByRef var, LowerBound, UpperBound) {
	If var between %LowerBound% and %UpperBound%
		Return, true
}
IfNotBetween(ByRef var, LowerBound, UpperBound) {
	If var not between %LowerBound% and %UpperBound%
		Return, true
}
IfIn(ByRef var, MatchList) {
	If var in %MatchList%
		Return, true
}
IfNotIn(ByRef var, MatchList) {
	If var not in %MatchList%
		Return, true
}
IfContains(ByRef var, MatchList) {
	If var contains %MatchList%
		Return, true
}
IfNotContains(ByRef var, MatchList) {
	If var not contains %MatchList%
		Return, true
}
IfIs(ByRef var, type) {
	If var is %type%
		Return, true
}
IfIsNot(ByRef var, type) {
	If var is not %type%
		Return, true
}

ControlGet(Cmd, Value = "", Control = "", WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	ControlGet, v, %Cmd%, %Value%, %Control%, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
ControlGetFocus(WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	ControlGetFocus, v, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
ControlGetText(Control = "", WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	ControlGetText, v, %Control%, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
DriveGet(Cmd, Value = "") {
	DriveGet, v, %Cmd%, %Value%
		Return, v
}
DriveSpaceFree(Path) {
	DriveSpaceFree, v, %Path%
		Return, v
}
EnvGet(EnvVarName) {
	EnvGet, v, %EnvVarName%
		Return, v
}
FileGetAttrib(Filename = "") {
	FileGetAttrib, v, %Filename%
		Return, v
}
FileGetShortcut(LinkFile, ByRef OutTarget = "", ByRef OutDir = "", ByRef OutArgs = "", ByRef OutDescription = "", ByRef OutIcon = "", ByRef OutIconNum = "", ByRef OutRunState = "") {
	FileGetShortcut, %LinkFile%, OutTarget, OutDir, OutArgs, OutDescription, OutIcon, OutIconNum, OutRunState

}
FileGetSize(Filename = "", Units = "") {
	FileGetSize, v, %Filename%, %Units%
		Return, v
}
FileGetTime(Filename = "", WhichTime = "") {
	FileGetTime, v, %Filename%, %WhichTime%
		Return, v
}
FileGetVersion(Filename = "") {
	FileGetVersion, v, %Filename%
		Return, v
}
FileRead(Filename) {
	FileRead, v, %Filename%
		Return, v
}
FileReadLine(Filename, LineNum) {
	FileReadLine, v, %Filename%, %LineNum%
		Return, v
}
FileSelectFile(Options = "", RootDir = "", Prompt = "", Filter = "") {
	FileSelectFile, v, %Options%, %RootDir%, %Prompt%, %Filter%
		Return, v
}
FileSelectFolder(StartingFolder = "", Options = "", Prompt = "") {
	FileSelectFolder, v, %StartingFolder%, %Options%, %Prompt%
		Return, v
}
FormatTime(YYYYMMDDHH24MISS = "", Format = "") {
	FormatTime, v, %YYYYMMDDHH24MISS%, %Format%
		Return, v
}
GetKeyState(WhichKey , Mode = "") {
	GetKeyState, v, %WhichKey%, %Mode%
	Return, v
}
GuiControlGet(Subcommand = "", ControlID = "", Param4 = "") {
	GuiControlGet, v, %Subcommand%, %ControlID%, %Param4%
		Return, v
}
ImageSearch(ByRef OutputVarX, ByRef OutputVarY, X1, Y1, X2, Y2, ImageFile) {
	ImageSearch, OutputVarX, OutputVarY, %X1%, %Y1%, %X2%, %Y2%, %ImageFile%

}
IniRead(Filename, Section, Key, Default = "") {
	IniRead, v, %Filename%, %Section%, %Key%, %Default%
		Return, v
}
Input(Options = "", EndKeys = "", MatchList = "") {
	Input, v, %Options%, %EndKeys%, %MatchList%
		Return, v
}
InputBox(Title = "", Prompt = "", HIDE = "", Width = "", Height = "", X = "", Y = "", Font = "", Timeout = "", Default = "") {
	InputBox, v, %Title%, %Prompt%, %HIDE%, %Width%, %Height%, %X%, %Y%, , %Timeout%, %Default%
		Return, v
}
MouseGetPos(ByRef OutputVarX = "", ByRef OutputVarY = "", ByRef OutputVarWin = "", ByRef OutputVarControl = "", Mode = "") {
	MouseGetPos, OutputVarX, OutputVarY, OutputVarWin, OutputVarControl, %Mode%

}
PixelGetColor(X, Y, RGB = "") {
	PixelGetColor, v, %X%, %Y%, %RGB%
		Return, v
}
PixelSearch(ByRef OutputVarX, ByRef OutputVarY, X1, Y1, X2, Y2, ColorID, Variation = "", Mode = "") {
	PixelSearch, OutputVarX, OutputVarY, %X1%, %Y1%, %X2%, %Y2%, %ColorID%, %Variation%, %Mode%

}
Random(Min = "", Max = "") {
	Random, v, %Min%, %Max%
		Return, v
}
RegRead(RootKey, SubKey, ValueName = "") {
	RegRead, v, %RootKey%, %SubKey%, %ValueName%
		Return, v
}
Run(Target, WorkingDir = "", Mode = "") {
	Run, %Target%, %WorkingDir%, %Mode%, %v%
		Return, v	
}
SoundGet(ComponentType = "", ControlType = "", DeviceNumber = "") {
	SoundGet, v, %ComponentType%, %ControlType%, %DeviceNumber%
		Return, v
}
SoundGetWaveVolume(DeviceNumber = "") {
	SoundGetWaveVolume, v, %DeviceNumber%
		Return, v
}
StatusBarGetText(Part = "", WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	StatusBarGetText, v, %Part%, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
SplitPath(ByRef InputVar, ByRef OutFileName = "", ByRef OutDir = "", ByRef OutExtension = "", ByRef OutNameNoExt = "", ByRef OutDrive = "") {
	SplitPath, InputVar, OutFileName, OutDir, OutExtension, OutNameNoExt, OutDrive

}
StringGetPos(ByRef InputVar, SearchText, Mode = "", Offset = "") {
	StringGetPos, v, InputVar, %SearchText%, %Mode%, %Offset%
		Return, v
}
StringLeft(ByRef InputVar, Count) {
	StringLeft, v, InputVar, %Count%
		Return, v
}
StringLen(ByRef InputVar) {
	StringLen, v, InputVar
		Return, v
}
StringLower(ByRef InputVar, T = "") {
	StringLower, v, InputVar, %T%
		Return, v
}
StringMid(ByRef InputVar, StartChar, Count , L = "") {
	StringMid, v, InputVar, %StartChar%, %Count%, %L%
		Return, v
}
StringReplace(ByRef InputVar, SearchText, ReplaceText = "", All = "") {
	StringReplace, v, InputVar, %SearchText%, %ReplaceText%, %All%
		Return, v
}
StringRight(ByRef InputVar, Count) {
	StringRight, v, InputVar, %Count%
		Return, v
}
StringTrimLeft(ByRef InputVar, Count) {
	StringTrimLeft, v, InputVar, %Count%
		Return, v
}
StringTrimRight(ByRef InputVar, Count) {
	StringTrimRight, v, InputVar, %Count%
		Return, v
}
StringUpper(ByRef InputVar, T = "") {
	StringUpper, v, InputVar, %T%
		Return, v
}
SysGet(Subcommand, Param3 = "") {
	SysGet, v, %Subcommand%, %Param3%
		Return, v
}
Transform(Cmd, Value1, Value2 = "") {
	Transform, v, %Cmd%, %Value1%, %Value2%
		Return, v
}
WinGet(Cmd = "", WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	WinGet, v, %Cmd%, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
WinGetActiveTitle() {
	WinGetActiveTitle, v
		Return, v
}
WinGetClass(WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	WinGetClass, v, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
WinGetText(WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	WinGetText, v, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}
WinGetTitle(WinTitle = "", WinText = "", ExcludeTitle = "", ExcludeText = "") {
	WinGetTitle, v, %WinTitle%, %WinText%, %ExcludeTitle%, %ExcludeText%
		Return, v
}