[TxMt] TM2 bug when file simultaneously edited by vim

[Yi Zhang]

Hi,

Not sure if this has been reported before, but here is how to reproduce the bug:

1. Open a file a.txt with TM2 Alpha.
2. Use another program, say Vim, to edit that file while it is opened by TM2, and save the changes.
3. Switch back to TM2 and the file name (window title) becomes a.txt~.

What should happen:

TM2 should prompt to reload the externally modified file instead of open Vim's temp file.

-Yi