patch 8.2.3748: giving an error for an empty sign argument breaks a plugin Commit: https://github.com/vim/vim/commit/e5710a02cb78c2a0a868ea55740835c78ddecbb4 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Dec 5 19:10:04 2021 +0000 patch 8.2.3748: giving an error for an empty sign argument breaks a plugin Problem: Giving an error for an empty sign argument breaks a plugin. Solution: Do not give an error.

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