Markdown Link

script

/*
### Create Markdown link

#### if text in clipboard is NOT a URL:

- If no text is selected, insert []() in cursor position, leaving cursor ready to type link text.
- If text is selected, insert [selectedText]() leaving cursor in parens to type URL.

#### If URL in Clipboard:

- If no text is selected, insert [](urlFromClipboard) in cursor position, leaving cursor ready to type link text
- If text is selected, insert [selectedText](urlFromClipboard) leaving cursor after close parens.
*/

// helper to test for URL
function isUrl(s) {
   var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
   return regexp.test(s);
}

// get clipboard and test if it's a URL
let clip = app.getClipboard();
let link = "";
if (isUrl(clip)) {
  link = clip;
}

var sel = editor.getSelectedText();
let [st, len] = editor.getSelectedRange();

if (!sel || sel.length == 0) {
  editor.setSelectedText("[](" + link + ")");
  editor.setSelectedRange(st+1,0);
}
else {
  editor.setSelectedText("["+sel+"](" + link + ")");
  if (link.length > 0) {
    editor.setSelectedRange(st+len+link.length+4,0);
  }
  else {
    editor.setSelectedRange(st+len+3, 0);
  }
}