Vim

My NeoVim config

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Safe file opend by an user as root

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:w !sudo tee %

Search and replace over multiple files

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In order to edit multiple files at once you need to load all of them in vim buffers by doing

:args `fd -e yaml`

!!! You can replace the fd command that is responsible for generating the file list with any other suitable command like the regular find

Check your buffers with :buffers. Your desired files should be loaded.

Now execute a command on all opened buffers, in this case the search and replace:

:bufdo %s/SEARCH/REPLACE/ge | update

• bufdo execute commands on all open buffers
• % search the whole buffer
• g globally meaning do not stop after the first hit in a line
• e suppress warning when pattern is not found
• update save all changes

Delete empty lines

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:g/^$/d

Replace currently selected text with default register without yanking it

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vnoremap p "_dP

Open file in binary mode

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vim -b

Add string at the end of lines

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• SHIFT-v to select lines
• `:norm Astring'

norm means type the following commands and the A stands for append

Add string at the start of lines

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• ^ to move to the start of the line
• `CTRL-v’ to block select your lines
• SHIFT-I to insert your string (on one line)
• ESC to insert the string on all lines

Open multiple files in vim tabs

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vim -p [file1] [file2] ...

Convert line endings

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vim +':w ++ff=unix' +':q' FILE

or for other endings

• :w ++ff=dos
• :w ++ff=mac

Show mappings

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:map [<C-j>]
:verbose map [<C-j>]

Print infos (within) vim

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Prints various information about vim like version, enabled features, compile flags and loaded configuration files.

:version

Folding

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config using indent as fold method (see also Modeline):

set foldmethod=indent
set foldnestmax=10
set nofoldenable
set foldlevel=2

• za: Toggle at the current line
• zo: Open fold
• zc: Close fold
• zR: Open all folds
• zM: Close all folds
• zm: Increases the foldlevel by one
• zr: Decreases the foldlevel by one
• zj Moves the cursor to the next fold
• zk: Moves the cursor to the previous fold
• [z: Move to start of open fold
• ]z: Move to end of open fold
• zf#j: Creates a fold from the cursor down # lines
• zf/string Creates a fold from the cursor to string
• zd: Deletes the fold at the cursor
• zE: Deletes all folds

Modeline

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By setting set modeline=1 you can enable the Modeline Magic. When it is not working you can check the setting with the following command:

:verbose set modeline?

Some distros disable it with nomodeline in /etc/vimrc

Example usage folding: This line at the bottom of a file tells vim to use marker as foldmethod and fold all foldings after opening the file

" vim:foldmethod=marker:foldlevel=0

Startup time

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vim --startuptime vim.log

Debug lag in vim

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After starting vim

:profile start profile.log
:profile func *
:profile file *

Do the stuff that lags and then run :profile pause and quit vim. Inspect profile.log

Open vim in debug mode

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vim -D

Quickfix window

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:ccl[ose]
:cope[n]
:cp
:cn

Location window

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:lcl[ose]
:lop[en]
:lp
:ln

Use CAPS as ESC

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In Linux use setxkbmap:

setxkbmap -option caps:escape # More options available
setxkbmap -option # to reset changes

NeoVim and vimrc

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In .config/nvim/init.vim (create if not existing)

set runtimepath^=~/.vim runtimepath+=~/.vim/after
let &packpath=&runtimepath
source ~/.vimrc

Enter copyright symbol

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1. In insert mode
2. C-k a question mark will appear
3. Enter Co

Here is a cheatsheet about digraphs (how this is called)

Tabs vs buffers

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A buffer is the in-memory text of a file.
A window is a viewport on a buffer.
A tab page is a collection of windows.