romainl

Command mode

romainl

1

Déplacer le curseur

H : en haut de l’écran

M : au milieu de l’écran

L : en bas de l’écran

romainl

Jest and built-in Vim features

Set up a sandbox

$ cd /tmp
$ mkdir jest-and-vim
$ cd $_
$ npm init -y
$ npm install --save-dev jest

romainl

Extending Exuberant Ctags

Configuration

Like most CLI programs, Ctags can have its behaviour changed by passing it options like -R, to make it work recursively, or -f badaboom, to make it generate a file called badaboom.

Teaching Ctags about a new language or extending the rules of a supported language is also done with options like --langmap or --regex-<lang>. For example, we could call Ctags with these options:

$ ctags -R --regex-javascript=<regex> --regex-javascript=<regex> [...] --regex-javascript=<regex> .

romainl

#!/bin/sh

usage() {
	cat <<\EOF
usage: git jump <mode> [<args>]

Jump to interesting elements in an editor.
The <mode> parameter is one of:

diff: elements are diff hunks. Arguments are given to diff.

romainl

Don't use Vim

Don't do the crime, if you can't do the time.

-- Anthony Vincenzo "Tony" Baretta

Vim is an amazing text editor. I love it. Really, I wouldn't [organize][organize] a Vim advent calendar if I didn't. But, as amazing as it is, Vim is not for everyone. It can't solve all your problems, or be a TUI version of your favorite IDE, or make you a better programmer, or land you that dream job in the Bay Area. But Vim can help you be more mindful, focused, and efficient, as long as you approach it with the right mindset.

Don't get me wrong, I certainly welcome you to try Vim, but I'm not a proselyte. I don't thrive on newbies. I just want you to use the right tool for the job and not waste your—and anyone's—time on a fruitless quest.

romainl

:DiffOrig but smarter

This is an enhanced version of the snippet provided under :help diff-original-file.

Where the original :DiffOrig only shows differences between the buffer in memory and the file on disk, :Diff can be used in two ways:

• against the file on disk, like the original, with:

  :Diff
  

romainl

Off the beaten path

What is &path used for?

Vim uses :help 'path' to define the root directories from where to search non-recursively for files.

It is used for:

• gf, gF, <C-w>f, <C-w>F, <C-w>gf, <C-w>gF,
• :find, :sfind, :tabfind,

romainl

Painless ESLint/Standard integration

Our goal, here, is threefold:

• use Vim's built-in features to their fullest,
• be a good project citizen even if we don't use $EDITOR_DU_JOUR,
• have a minimal but beneficial impact on the infrastructure of the project we work on.

Expose a simple interface for linting at the project level

romainl

" Print the sum of the lines covered by visual selection or motion
function! Sum(type, ...)
	let sel_save = &selection
	let &selection = "inclusive"
	let reg_save = @@

	*t'>
	'[,']!awk '{ sum += $0 } END { print sum }'

	let &selection = sel_save