nvim-fuel

Fuel for your programs

nvim-fuel is a Neovim plugin for running a main or script in several languages. This is meant to be useful for practicing and maybe teaching.

Caveats

• To use this plugin in a particular language, the compiler or language itself needs to be installed.
• Supported languages are: Assembly, C, C++, Clojure, Go, Haskell, Java, Kotlin, Lua, Python, Rust, Scala, Scheme and Zig
• This plugin has been developed on and for Linux following open source philosophies.

Overview

Feature	nvim-fuel	NOTE
Command to show results in Fuel Console	✔️	Set by Fuel
Command to close Fuel Console	✔️	Set by FuelStop
Execution in Normal Mode	✔️	Set by Fuel
Execution in Insert Mode	✔️	Set by Fuel
Console size configurable	✔️	By setup
Autosave configurable	✔️	By setup
Supports different languages in same window (different buffers)	✔️
Main arguments	❌
Stdin	✔️
Popup console	✔️	By setup

Installation

Packer

use {
    'javiorfo/nvim-fuel',
    requires = 'javiorfo/nvim-popcorn'
}

Lazy

{
    'javiorfo/nvim-fuel',
    lazy = true,
    dependencies = { 'javiorfo/nvim-popcorn' },
    -- ft could contain only the languages nvim-fuel will be used for
    ft = { "asm", "c", "cpp", "clojure", "go", "haskell", "java", "kotlin", "lua", "python", "rust", "scala", "scheme", "zig" },
    opts = {
         -- Not necessary. Only if you want to change the setup

         -- Default console size (this applies to popup size too)
         console_size = 10,

         -- Default autosave before pressing the Fuel shortcut
         autosave = true,

         -- Default false. If you want to show the console in a popup instead of a buffer
         popup = false
    },
    keys = {
        { "<leader>fu", "<Plug>Fuel" },
        { "<leader>fs", "<Plug>FuelStop" }
    }
}

Configuration (Packer)

• Set mappings in init.vim or init.lua

local opts = { noremap = true, silent = true }

-- Normal mode 
vim.api.nvim_set_keymap('n', '<leader>fu', '<Plug>Fuel', opts)
vim.api.nvim_set_keymap('n', '<leader>fs', '<Plug>FuelStop<CR>', opts)

• Only the installation step is required to use this plugin, but you can modify this options if you like:

require'fuel'.setup{
    -- Default console size (this applies to popup size too)
    console_size = 10,

    -- Default autosave before pressing the Fuel shortcut
    autosave = true,

    -- Default false. If you want to show the console in a popup instead of a buffer
    popup = false
}

Usage

• Executing the map corresponding to Fuel in a main or scripting file, it will compile and execute the aforementioned file opening a console ouput.
• Execute the map corresponding to FuelStop to close all open Fuel console. In case you are using popup = true just press

Screenshots

Java:

C:

Haskell and Rust in the same window:

Kotlin:

With popup console

NOTE: The colorscheme nebula from nvim-nyctophilia is used in this image.

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