getTabCount(Ver2.14対応版)
IndexScriptGlobal method− getTabCount

getTabCount( num? )
Gets the count of tabs. (V 1.03)
パラメータ1(数値型、省略可能)
If split, specifies which split. Count left / top split from 0.
If you specify -1, it returns the count of tabs of the split currently in focus.
If you specify -2, it returns the count of tabs that totaled all splits.
If omitted, it is the same as -2.

返り値(数値型)
Tab count.