patch 9.0.0656: cannot specify another character to use instead of '@' Commit: https://github.com/vim/vim/commit/4ba5f1dab656103e8f4a4505452d1816b9e83c1e Author: Bram Moolenaar <Bram@vim.org> Date: Tue Oct 4 14:36:29 2022 +0100 patch 9.0.0656: cannot specify another character to use instead of '@' Problem: Cannot specify another character to use instead of '@' at the end of the window. Solution: Add "lastline" to 'fillchars'. (Martin Tournoij, closes #11264, closes #10963)

Test for writing and reading a file of over 100 Kbyte

1 line: "This is the start"
3001 lines: "This is the leader"
1 line: "This is the middle"
3001 lines: "This is the trailer"
1 line: "This is the end"

STARTTEST
:%d
aThis is the start
This is the leader
This is the middle
This is the trailer
This is the endkY3000p2GY3000p
:w! Xtest
:%d
:e! Xtest
:.w! test.out
3003G:.w >>test.out
6005G:.w >>test.out
:qa!
ENDTEST