:set undodir^=$HOME/.vim/undo//
If you already have an undodir configured by a distro config or plugin, replacing it outright can remove fallback paths you still want.
:set backupcopy=yes
When Vim saves a file, it may use a rename-style write strategy that can replace the original inode.
:set eadirection=hor
If you use many splits, automatic equalization can feel disruptive when Vim resizes both height and width after layout changes.
:set wrapscan!
wrapscan controls what happens when a / or ? search reaches the end (or beginning) of the file.
:set completeopt=menuone,noinsert,noselect
When completion inserts text too early, you lose control over what gets committed and where undo breakpoints land.
:set shortmess+=c
Insert-mode completion can spam the command line with status text like "match 1 of N" and related prompts.
config #config #completion #command-line #options #insert-mode
:set diffopt+=algorithm:histogram,hiddenoff
Default diff behavior is fine for small changes, but larger refactors often produce noisy hunks and annoying warnings about hidden buffers.
:set cedit=<C-y>
Vim's command-line window is invaluable for editing long : commands, search patterns, and complex substitutions with normal-mode tools.
:set sessionoptions+=globals
By default, :mksession restores windows, buffers, and many editor states, but it skips most global variables.
:set viewoptions=cursor,folds,slash,unix
The viewoptions setting is a comma-separated list that determines exactly what :mkview (and the auto-save view pattern) stores in a view file.
vim.wo.number = true / vim.bo.tabstop = 2
Neovim's Lua API exposes three namespaces for setting options with the correct scope: vim.
vim.opt
Neovim's vim.
:set switchbuf=useopen,usetab
By default, Vim opens a new window (or reloads the buffer in the current window) whenever you navigate to a quickfix entry, tag, or :buffer command — even if
:setglobal
Vim maintains two values for most options: a global default that applies to new windows and buffers, and a local copy that can be overridden per-buffer or per-w
:set shortmess+=I
The shortmess option is a string of single-character flags that tell Vim which messages to suppress or abbreviate.
:set {option}&
Append & to any :set command to reset that option to its compiled-in default value — the value Vim shipped with before any vimrc or plugin changed it.
vim.opt.option:append(value)
Neovim's vim.
:set option!
For any boolean option, appending ! to :set inverts its current value.
:set nowrapscan
By default Vim's wrapscan option is enabled, which causes / and ? searches to wrap silently from the end of the file back to the beginning (and vice versa).
[on / ]on / yon
The vim-unimpaired plugin by Tim Pope provides a consistent set of bracket-based mappings for toggling Vim options, navigating paired lists, and performing comm
