https://github.com/pawelduda/fzf-live-repl

Turn your fzf into a live REPL
https://github.com/pawelduda/fzf-live-repl

Last synced: about 1 month ago
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Turn your fzf into a live REPL

• Host: GitHub
• URL: https://github.com/pawelduda/fzf-live-repl
• Owner: pawelduda
• License: unlicense
• Created: 2019-07-17T00:11:47.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-02-12T23:03:01.000Z (almost 4 years ago)
• Last Synced: 2024-08-03T01:39:22.535Z (4 months ago)
• Language: Shell
• Size: 352 KB
• Stars: 253
• Watchers: 5
• Forks: 7
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# 🚀 fzf-live-repl 🚀

This hacky one-liner turns your [fzf](https://github.com/junegunn/fzf) into a live REPL. There is not much to explain,

see it for yourself. Please note that I will be adding more examples as I come up with them. You are also welcome to

contribute them yourself by creating an issue or a pull request.

[Featured in my blog post](https://paweldu.dev/posts/fzf-live-repl/)

[See also: fzf-launch - open any file directly from command line with a command of your choice](https://paweldu.dev/posts/fzf-launch/)

## How?

By abusing the `--preview` flag of `fzf`. It allows an arbitrary command to be executed as the query changes. The `{q}`

is then being substituted by your typed query. After exiting `fzf` by pressing `enter`, the `--print-query` flag ensures that the typed

query will be printed to stdout.

## WARNING!

Always be careful what you set the `--preview` flag to! **Imagine setting `rm -rf` and then typing `*` as the query

string!**. I take no responsibility if you break anything! 

**ONLY USE THIS FOR COMMANDS WHICH ARE READ-ONLY!**

**ALWAYS KNOW WHAT YOU'RE TYPING/PASTING!** 

## Examples

### Live awk preview

```bash

$ echo '' | fzf --print-query --preview 'echo "a\nb\nc\nd" | awk {q}'

```

![live-awk-preview](gifs/fzf_awk.gif?raw=True)

### Peek into contents of a directory

```bash

$ echo '' | fzf --preview 'ls {q}'

```

![fzf-ls](gifs/fzf_ls.gif?raw=True)

### Execute a Ruby script

```bash

$ echo '' | fzf --print-query --preview 'ruby -e {q}'

```

![fzf-ruby](gifs/fzf_ruby.gif?raw=True)

### Instantly browse manpages (and find the relevant flag as you type the command - TODO)

```bash

$ echo '' | fzf --preview 'man {q}'

```

### Execute a Python script

```bash

$ echo '' | fzf --print-query --preview 'python -c {q}'

```