no-useless-escape should ignore line breaks in strings

What version of ESLint are you using? 2.5.0

What parser (default, Babel-ESLint, etc.) are you using? default

Please show your full configuration: Use this: /*eslint no-useless-escape: 2 */

What did you do? Please include the actual source code causing the issue. Create a multiline string separated by \ like this:

/* exported selectorCss */
function selectorCss() {
    return '.someclass {\
        color: #000000;\
        opacity: 0.8;\
    }';
}

What did you expect to happen? No errors or warnings

What actually happened? Please include the actual, raw output from ESLint.

  5:9  error  Unnecessary escape character: \
  no-useless-escape
  5:9  error  Unnecessary escape character: \
  no-useless-escape
  5:9  error  Unnecessary escape character: \
  no-useless-escape

✖ 3 problems (3 errors, 0 warnings)

[BYK]

I think having an allowMultiline or ignoreMultiline option would be good.

[mysticatea]

I think we can move forward this.

• This was intended, but we can change the behavior to allowing multiline strings as no-multi-str is covering this. I think this is not a breaking change since this is easing.

I will work on this within a few days.