Is "append File" Broken In 1.5.3?

[FredThompson]

edit:

I have taken a file and, with the counter showing frame 0, pressed "Home" to mark a selection start. Then I went to frame 31 and pressed "End" to mark the end of a selection.

I then saved this block. That file reports it has 31 frames. I've also stepped through the file to verify it has that many frames.

When I load that file and append a second file, the first frame of the second file shows as frame 31.

This makes no sense. It appears that VirtualDub is over-writing the last frame of the first file. If so, it is not properly appending.
1?

[fccHandler]

Indeed frame #0 designates the first frame. But if your video is 100 frames, frame #100 is a null frame; the real final frame is #99.

In all cases that I can think of (except one), the END key designates the frame AFTER the last frame to be processed. The one exception is when you select a range of frames to delete; in that case the frames deleted include the END frame.

[FredThompson]

I was editing while you replied. I've also stepped through the files again and completely changed my first post to better describe where the problem shows itself.

I understand what you say but the sequence I explained above shows different behavior.