welp 0.1.0 - Docs.rs

welp-0.1.0 is not a library.

$ gti push
zsh: command not found: gti
$ welp
git push [enter/↑/↓/ctrl+c]
fatal: The current branch feature has no upstream branch.
$ welp
git push --set-upstream origin feature [enter/↑/↓/ctrl+c]

Why welp

thefuck is one of the most-loved command-line tools ever made, but it has had no release since January 2022 and breaks on Python 3.12 and newer (No module named 'imp'). welp keeps what made it great and fixes what didn't:

No Python. One small binary that starts instantly, on any Python version or none.
Safe. welp never runs destructive or interactive commands (rm, mv, dd, editors, ssh, ...) a second time just to read their output. Rules that need to know more look at your files instead.
Moves your setup for you. welp migrate switches your shell config, keeps your alias (yes, fuck still works) and imports your settings.
Same rule names. Your thefuck exclude_rules keep working.
Workplace-friendly name. Use whatever alias you like.

Install

cargo install welp

Homebrew and prebuilt binaries are coming.

Set up

Add one line to your shell config, then open a new terminal:

Shell	Line	File
zsh	`eval "$(welp init zsh)"`	`~/.zshrc`
bash	`eval "$(welp init bash)"`	`~/.bashrc`
fish	`welp init fish \| source`	`~/.config/fish/config.fish`

Prefer another word? Add --alias, for example eval "$(welp init zsh --alias oops)".

Coming from thefuck

welp migrate --dry-run   # see what would change
welp migrate             # do it

It comments out the thefuck lines in your shell config (with a backup next to each file), adds welp in their place with your alias, and turns ~/.config/thefuck/settings.py into ~/.config/welp/config.toml.

Rules

Rule	What it fixes
`no_command`	A mistyped program name: `gti` → `git`
`git_not_command`	A mistyped git subcommand: `git comit` → `git commit`
`git_push`	Sets the upstream when a new branch has none
`git_pull`	Sets the tracking branch, then pulls
`git_checkout`	Creates the branch when it does not exist yet
`git_branch_delete`	`-d` → `-D` for a branch that is not merged
`git_commit_add`	Stages changed files when a commit has nothing staged
`did_you_mean`	Uses the fix a tool suggests: cargo, npm, pip, brew, gh and more
`sudo`	Runs the command again with sudo after "permission denied"
`chmod_x`	Makes a script executable before running it
`apt_get`	Installs a missing program the system names, then runs it
`cd_mkdir`	Creates the folder you tried to `cd` into
`cd_parent`	`cd..` → `cd ..`
`mkdir_p`	Adds `-p` when parent folders are missing
`cp_omitting_directory`	Adds `-r` to copy a folder
`rm_dir`	Adds `-r` to remove a folder
`grep_recursive`	Adds `-r` to search a folder
`touch`	Creates missing folders, then the file
`sl_ls`	`sl` → `ls`

welp rules lists them. More of thefuck's 170 rules are being ported. Pull requests are welcome.

Settings

~/.config/welp/config.toml (or $XDG_CONFIG_HOME/welp/config.toml):

require_confirmation = true   # false runs the first fix straight away
wait_command = 3              # seconds to wait when reading a command's output
wait_slow_command = 15
slow_commands = ["lein", "react-native", "gradle", "./gradlew", "vagrant"]
no_rerun = ["rm", "mv", "dd", "vim", "ssh"]  # never run these twice (the full default list is longer)
exclude_rules = []

Adding a rule

A rule is a name, a check and a fix, in src/rules/. Each comes with a test that feeds it a command and the output a real tool printed:

Rule {
    name: "mkdir_p",
    description: "Adds -p when parent folders are missing",
    priority: 1000,
    matches: |c| c.is("mkdir") && c.output_lower().contains("no such file or directory"),
    fixes: |c| vec![c.replace_word("mkdir", "mkdir -p")],
},

Run cargo test before opening a pull request.

The demo above is a real session: demo/record.sh sets up a throwaway repo and types the commands into zsh.

Support

If welp saves you some typing, you can buy me a coffee or come hang out on Discord.

Credits

welp's rules are ports of thefuck's, by Vladimir Iakovlev and its contributors (MIT). welp is not affiliated with thefuck.

License

MIT