Drafts Directory: Outdent

Action

Posted by agiletortoise, Last update over 3 years ago

UPDATES

over 3 years ago

Minor refactoring, and better handling of cases where existing indent characters do not match your preferred indent string.

Outdent the selected line range removing one level of nested white space.

Note that by default this action is bound to the keyboard shortcut ⌘-[, which is common in many text editors. If you prefer to outdent blocks using the shift-tab keyboard shortcut, see this forum tip on re-assigning shortcuts.

Tested

Trusted member

Install

Steps

script

// character string used for indent
const indent = editor.preferredTabString

// grab ranges and text
let [selStart, selLen] = editor.getSelectedRange()
let [lnStart, lnLen] = editor.getSelectedLineRange()
let lnText = editor.getTextInRange(lnStart, lnLen)

// loop over lines and remove level of indents
let updatedLines = []
let outdentCt = 0
let startAdjust = 0
let isFirst = true

let lines = lnText.split("\n")
for (let line of lines) {
	if (line.startsWith(indent)) {
   		updatedLines.push(line.substr(indent.length, line.length-indent.length))
   		if (!isFirst) {
      		outdentCt += indent.length
    	}
    	else {
    		if (selStart > lnStart) {
	      		startAdjust = indent.length
	      	}
    	}
  }
  else if (line.startsWith("\t")) { // also clean up other whitespace that might not match prefs
      updatedLines.push(line.substr(1, line.length-1))
   		if (!isFirst) {
      		outdentCt += 1
    	}
    	else {
    		if (selStart > lnStart) {
	      		startAdjust = 1
	      	}
    	}
  }
  else if (line.startsWith("  ")) { // also clean up other whitespace that might not match prefs
      updatedLines.push(line.substr(2, line.length-2))
   		if (!isFirst) {
      		outdentCt += 2
    	}
    	else {
    		if (selStart > lnStart) {
	      		startAdjust = 2
	      	}
    	}
  }
  else { // not indented
    updatedLines.push(line)
  }
  isFirst = false
}

// set text
editor.setTextInRange(lnStart, lnLen, updatedLines.join("\n"))

// update selection
let newStart = selStart - startAdjust
let newLen = selLen - outdentCt
editor.setSelectedRange(newStart, newLen)

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