JS Outdent

script

// JS Outdent
// RV 2020-03-06 at 18:36 EST

// Outdents single or mutliple lines.
// Removes two spaces or tab.

var lnRange = editor.getSelectedLineRange();
var text = editor.getTextInRange(lnRange[0],lnRange[1]);
var selRange = editor.getSelectedRange();
var charsAdded = 0;
var newText = '';
var lnCount = text.split('\n').length;

main: {
  // Blank line or no indents:
  if (lnRange[1] == 1 || text.match(/^\S/)) break main; 

  newText = text.replace(/^\t|^  |^ /gm, '')
  charsAdded = newText.length - text.length;

  // update text and set new selection:
  editor.setTextInRange(lnRange[0],lnRange[1], newText);

  if (lnCount > 2) {
    editor.setSelectedRange(lnRange[0], lnRange[1] + charsAdded);
  }
  else {
    let offset = 2;
    if (selRange[0] - lnRange[0] == 0) offset = 0;

    editor.setSelectedRange(selRange[0] - offset, selRange[1]);
  }
}