Pasting from terminal includes 4 leading spaces

[montlebalm]

Pasting text from Terminal.app on macOS includes 4 leading spaces.

I created a fiddle to demonstrate the problem. During paste, the fiddle logs the contents of the clipboard and does a comparison to make sure it's strictly equal to the word "testing" to verify there are no hidden characters.

Steps for Reproduction

1. Open Terminal.app
2. Type the word "testing"
3. Copy "testing" from terminal
4. Visit https://jsfiddle.net/montlebalm/ookmgoqj/2/
5. Paste into the Quill editor

Expected behavior:

The editor contents should only contain the word "testing".

Actual behavior:

The editor's contents are "testing" with 4 leading spaces.

Platforms:

Tested on macOS 10.12.2

• Broken in Chrome 55.0.2883.95
• Works in Safari 10.0.2

Version:

Quill version 1.1.9