Editing WoW:API pcall

{{wowlua}}
Calls a function, returning a boolean indicating success as the first return value, and error text / return values as the following values.
 retOK, ret1, ret2, ... retn = pcall (func, arg1, arg2, ...);

== Arguments ==
;func
: Function - The function that will be called (from within) pcall().
;arg1 - argn
: Variable - Any variable that is also to be passed with the function when its called (Optional).

== Returns ==
;retOK
: Boolean - If the call to the function (that was passed to pcall) succeeded, returns true. If an error occured, returns false.
;ret1
: String (if failed) / Variable - If an error occured, error text is returned; if not, ret1 is the first return value of the original function.
;ret2 - retn
: Variable - If the function call succeeded, those return variables contain values returned by original function.

== Example ==
 function myTest(incrementVal)
   return incrementVal + 10;
 end
 
 local retOK, ret1 = pcall(myTest,"string value");
 local msg = "";
 if (retOK) then
  msg = "Function succeeded, result: " .. ret1 .. ".";
 else
  msg = "Function failed, error text: " .. ret1 .. ".";
 end
 DEFAULT_CHAT_FRAME:AddMessage(msg);

====Result====
pcall will catch the error that occured within 'myTest', and output the appropriate text to the default chat window. If "string value" is replaced by a number, the code will output number+10 instead.

==Details==
: pcall will ''also'' return other arguments returned from the "function" if all is successful.