Introduction

Sniprun is a code runner plugin for neovim written in Lua and Rust. It aims to provide stupidly fast partial code testing for interpreted and compiled languages . Sniprun blurs the line between standard save/run workflow, jupyter-like notebook, and REPL/interpreters.

TLDR: Plug 'michaelb/sniprun', {'do': 'sh install.sh'}, :SnipRun, :'<,'>SnipRun, :SnipInfo

Installation, configuration, ...

See installation instructions , configuration tips , usage explanations and much more useful information on the WIKI.

Demos

Send to Sniprun snippets of any language

A very simple example (in C), play the .gif and look in the command area:

The result can be returned in multiple (even at the same time) ways:

Classic	Virtual Text
Temporary Floating Window	Terminal
Notification	API

REPL-like behavior is available for some languages

Python, Julia, Lua, JavaScript & Typescript (via deno), Clojure, R, Mathematica, Sage, coming soon for many other interpreted (and compiled) languages. With REPL-like behavior ,you can run code dependent on previously executed code, just like in a REPL, from within your favorite editor.

Features

Sniprun is a way to quickly run small snippets of code, on the fly, and iterate very quickly and conveniently. To learn a language, to quickly experiment with new features (not yet embedded in classes or a whole project etc...), or to develop simple code pipelines (like a machine learning exercise) that fit in a unique file, sniprun is probably the best plugin out there.

As a matter of proof, Sniprun :

• Officially supports all these languages (compiled & interpreted), and virtually any language
• can create and connect to REPLs in order to present an interactive and playful interface
• can run things like GUI plots, networks requests or even Ansible playbooks
• doesn't require even one line of configuration by default (but can be customized up to the tiniest things)
• can run code from a part of a file which isn't complete / contains errors
• can automatically fetch (in some languages) the imports necessary for your code snippet
• can run live (at every keystroke)
• lends itself to easy mappings and Vim motions
• has an API (for running code, and displaying results)
• has many result display modes that can be enabled at the same time, and for different output status if wanted
• supports literate programming in Markdown, Orgmode and Neorg

Known limitations

Due to its nature, Sniprun may have trouble with programs that :

• Mess with standard output / stderr
• Need to read from stdin
• Access files; sniprun does not run in a virtual environment, it accesses files just like your own code do, but since it does not run the whole program , something might go wrong. Relative paths may cause issues, as the current working directory for sniprun will be somewhere in ~/.cache/sniprun, and relative imports may miss.
• No support for Windows
• NixOS, MacOS users have to compile sniprun locally. Sniprun has not been tested on other Unixes (besides Linux itself, of course)

Changelog

It's been quite a journey already! For history fans, see the full changelog.

Contributing

Sniprun has been made contributor-friendly (see CONTRIBUTING.md), so it's relatively easy to create / fix interpreters for any language. But any (constructive) issue, discussion, or doc Pull Request is a welcome form of contribution !