patch 8.2.4924: maparg() may return a string that cannot be reused Commit: https://github.com/vim/vim/commit/0519ce00394474055bd58c089ea90a19986443eb Author: zeertzjq <zeertzjq@outlook.com> Date: Mon May 9 12:16:19 2022 +0100 patch 8.2.4924: maparg() may return a string that cannot be reused Problem: maparg() may return a string that cannot be reused. Solution: use msg_outtrans_special() instead of str2special(). (closes #10384)

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