JXA to open finder selection in MacVim, or default to an empty buffer

Open in Editor.js

#!/usr/bin/osascript -l JavaScript
// For use in Hammerspoon via hs.osascript.javascriptFromFile
//
// Debugging:
// 1. Add a `delay` to the beginning
// 2. Add some `console.log`s
// 3. Run from console as `osascript Open\ in\ MacVim.js`
// 4. Switch to a Finder window before the sleep is done
'use strict';

function quotedPosixPath(file) {
    let prefixed = decodeURI(file.url())
    let posixPath = prefixed.replace(/^file:\/\//, "")

    // https://stackoverflow.com/a/22827128
    // Escape internal single quotes
    let escapedPath = posixPath.replace(/'/g, `'\\''`)

    return `'${escapedPath}'`
}


(function () {
    // delay(2)

    const finder = Application("Finder")
    const currentApp = Application.currentApplication()

    currentApp.includeStandardAdditions = true

    let selection = finder.selection()

    let files = []
    for (var i=0; i<selection.length; i++) {
        let file = selection[i]
        files.push(quotedPosixPath(file))

        // helix doesn't seem to support `file://`, but nvim does,
        // so can go back to the below if I go back to nvim
        // files.push(JSON.stringify(selection[i].url()))
    }

    let cmd = [
        "PATH=/etc/profiles/per-user/n8henrie/bin:$PATH",
        "/usr/bin/open",
        "-n",
        "-a",
        "alacritty",
        "--args",
        '--class="__text_scratchpad"',
        "--command",
        "hx",
    ].concat(files)

    let cmdStr = cmd.join(" ")
    // console.log(cmdStr)
    currentApp.doShellScript(cmdStr)
})()