1613466 - Firefox Developer Tools: An RTL override character in an attribute affects the entire line

Status: NEW

(DevTools :: Inspector, defect, P3)

Description

[lmoeller]

Attachment: test.html - An HTML file where this bug occurs.

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:72.0) Gecko/20100101 Firefox/72.0

Steps to reproduce:

I opened a html-file (See attachment) containing a tag with an attribute containing a Unicode RTL override character (U+202E) and opened the Developer Tools using "Inspect Element".

Actual results:

The tag is being displayed as: <div data-test="<vid/><". (Note that it is only displayed as such but copying the tag obviously leads to the correct result)

Expected results:

The tag should be displayed as <div data-test=""></div>. The RTL override should only be applied to the attribute and not to other elements in the same line.

Comment 1

[Gingerbread Man]

(In reply to lmoeller from comment #0)

The tag is being displayed as: <div data-test="<vid/><"

That's also how it shows in the preview for the attachment above. Vivaldi shows <div data-test="‮"></div>

Comment 2

[lmoeller]

This screenshot shows how it is rendered on my computer: https://i.ibb.co/Q6TNLqC/Screen-Shot-2020-02-05-at-22-17-14.png
I am running macOS 10.15.2, Firefox 72.0.2 (Shows that no update is available)

(In reply to Gingerbread Man from comment #1)

(In reply to lmoeller from comment #0)

The tag is being displayed as: <div data-test="<vid/><"

That's also how it shows in the preview for the attachment above. Vivaldi shows <div data-test="‮"></div>

Comment 3

[Brad Werth [:bradwerth]]

Thanks for filing, and for the clear testcase. I can reproduce.

Comment 4

[Oriol Brufau [:Oriol]]

Testcase with U+202E in the attribute value, in the attribute name, and in the tag name:

document.write(`
  <div data-test="\u202e"></div>
  <div data-\u202e></div>
  <div-\u202e></div-\u202e>
`);
document.close();
inspect(document.body.firstElementChild);

Devtools should use unicode-bidi: isolate or something.