updated for version 7.4a.027 Problem: When Python adds lines to another buffer the cursor position is wrong, it might be below the last line causing ml_get errors. (Vlad Irnov) Solution: Temporarily change the current window, so that marks are corrected properly.

Test A:
  - file name displayed: test://bar.txt
  - quickfix claims that the file name displayed is: test://bar.txt
Test B:
  - number of window open: 2
Test C:
  - 'buftype' of the location list window: quickfix
  - buffer displayed in the 2nd window: test://quux.txt