patch 8.0.0836: can abandon a terminal buffer after making a change commit https://github.com/vim/vim/commit/20e6cd07baed8992e7a509ccef7f111ffcded44d Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 1 20:25:22 2017 +0200 patch 8.0.0836: can abandon a terminal buffer after making a change Problem: When a terminal buffer is changed it can still be accidentally abandoned. Solution: When making a change reset the 'buftype' option.

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