patch 8.2.4272: Vim9 expr test fails without the channel feature Commit: https://github.com/vim/vim/commit/eb6c2765959c91ddbb527f96f91ba5be199b8d41 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 31 13:36:36 2022 +0000 patch 8.2.4272: Vim9 expr test fails without the channel feature Problem: Vim9 expr test fails without the channel feature. (Dominique Pell?) Solution: Remove "g:" before "CheckFeature". (closes #9671)

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