I have been trying to get persistent undo to work for over a day now. I keep having a quite unusual bug. I tried the following:
" Let's save undo info!
if !isdirectory($HOME."/.vim")
call mkdir($HOME."/.vim", "", 0770)
endif
if !isdirectory($HOME."/.vim/undo-dir")
call mkdir($HOME."/.vim/undo-dir", "", 0700)
endif
set undodir=~/.vim/undo-dir
set undofile
I then open an existing file make a few edits and close the file. Open the file and type 'u' - The entire buffer is emptied.
Then looking through the documentation I found this snippet:
au BufReadPost * call ReadUndo()
au BufWritePost * call WriteUndo()
func ReadUndo()
if filereadable(expand('%:h') . '/UNDO/' . expand('%:t'))
rundo %:h/UNDO/%:t
endif
endfunc
func WriteUndo()
let dirname = expand('%:h') . '/UNDO'
if !isdirectory(dirname)
call mkdir(dirname)
endif
wundo %:h/UNDO/%:t
endfunc
This seems to work better, but I am still getting an undo at the beginning of every file that removes all content (i.e. pressing u to many times results in an empty file no matter what I started with) - is there a way to avoid this?
My version info:
NVIM v0.4.3
Build type: Release
LuaJIT 2.0.5
Compilation: /usr/bin/cc -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -O2 -DNDEBUG -DMIN_LOG_LEVEL=3 -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fdiagnostics-color=always -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -I/build/neovim/src/build/config -I/build/neovim/src/neovim-0.4.3/src -I/usr/include -I/build/neovim/src/build/src/nvim/auto -I/build/neovim/src/build/include
Compiled by builduser
Features: +acl +iconv +tui
See ":help feature-compile"
system vimrc file: "$VIM/sysinit.vim"
fall-back for $VIM: "/usr/share/nvim"
udoes what exactly? FWIW, in my vimrc I use (the linebreak-ed equivalent of)set undofile undodir=~/.undo if !isdirectory(expand(&undodir)) call mkdir(expand(&undodir), "p") endifset undofile undodir=~/.undo if !isdirectory(expand(&undodir)) call mkdir(expand(&undodir), "p") endifBut it resulted in the same result as my first example (deletes the buffer when trying to undo anything)