How to get selected files full path in script

[dindog]

I am writing an AHK script pass filename between open&save dialog of any windows applications with TC
I am using postMessage to call "cm_CopyFullNamesToClip" for now, but I find it's only work in 9.5beta, there is a undocument change of this internal commnad:

Before TC9.5beta cm_CopyFullNamesToClip will prompt dialog "no selected file" if the cursor is at "[..]"(parent dir), in TC9.5beta, it will return the source path, which I find it useful... in the case of "new file" or "save as", I just need to pass the source path to the dialog and leave the original filename.
This is a script for myself, so the backward compatibility is NOT my concern, I want to know is it a bug or "cm_CopyFullNamesToClip" will stay this way...

With the TC9.2 version "cm_CopyFullNamesToClip" , I need to wm_copydata to get "SN" check does it equal to "..", if the answer is not, I can call "cm_CopyFullNamesToClip" safely.... Or are there any better solution to get selected files name in TC by scripting?

[ghisler(Author)]

It's an intentional change:
21.01.19 Added: Menu Mark - "Copy names with path to clipboard": Copy current directory when cursor on [..] and nothing is selected (32/64)