1Test for autocommand that changes the buffer list, when doing ":ball".
2
3STARTTEST
4:so small.vim
5/^start of
6A1:.,/end of/w! Xxx1   " write test file Xxx1
7:sp Xxx1
8:close
9$r2:.,/end of/w! Xxx2    " write test file Xxx2
10:sp Xxx2
11:close
12$r3:.,/end of/w! Xxx3    " write test file Xxx3
13:sp Xxx3
14:close
15:au BufReadPost Xxx2 bwipe
16$r4:ball                 " open window for all args, close Xxx2
17:.,$w! test.out          " Write contents of this file
18:w >>test.out        " Append contents of second window (Xxx1)
19:/^start of/,$w >>test.out   " Append contents of last window (this file)
20:qa!
21ENDTEST
22
23start of test file Xxx
24	this is a test
25	this is a test
26end of test file Xxx
27