patch 8.0.0212: buffer for key name may be too small commit https://github.com/vim/vim/commit/423977d3cebac2be1158b1d11da60fe96db4b750 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 22 15:05:12 2017 +0100 patch 8.0.0212: buffer for key name may be too small Problem: The buffer used to store a key name theoreticaly could be too small. (Coverity) Solution: Count all possible modifier characters. Add a check for the length just in case.

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