1360238 - window.getSelection().toString() displays extra "\n" characters on multiple block elements, even if they are display:inline

Status: NEW

(Core :: DOM: Serializers, defect, P3)

Description

[Matt R [:stylizit] (slow, away until Sep)]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36

Steps to reproduce:

1) Open the url : 
data:text/html;charset=utf-8,<div style%3D"display%3Ainline%3B">this is<%2Fdiv><div style%3D"display%3Ainline%3B">on the same line<%2Fdiv>

2) Right-click on the text in the page and click "Select all"
3) Open Devtools and go to the Console tab
4) Run window.getSelection().toString()


Actual results:

Output returned: 
"this is
on the same line"


Expected results:

Output should be:
"this ison the same line"

Comment 1

[Matt R [:stylizit] (slow, away until Sep)]

Note that Firefox doesn't add an extra "\n" character for the below url 
data:text/html;charset=utf-8,<span style%3D"display%3Ainline%3B">this is<%2Fspan><span style%3D"display%3Ainline%3B">on the same line<%2Fspan>

so this seems to happen (presumably) only on block elements.

Safari 10.0.3 & Chrome 57.0.2987.133 both display the selected text correctly (without the extra "\n" character).

Comment 2

[Karl Dubost💡 :karlcow]

This could be one of the reasons quote-reply behaves differently in Firefox than Chrome on GitHub. Not 100% sure.
https://webcompat.com/issues/28521

Comment 3

[Firefox Bug Husbandry Bot]

Migrating Webcompat whiteboard priorities to project flags. See bug 1547409.

Comment 4

[Firefox Bug Husbandry Bot]

See bug 1547409. Migrating whiteboard priority tags to program flags.

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

The bug has a release status flag that shows some version of Firefox is affected, thus it will be considered confirmed.