991874 - Pseudo element -moz-placeholder :before selector doesn't work

Status: UNCONFIRMED

(Core :: CSS Parsing and Computation, enhancement)

Description

[mcdan]

Attachment: firefox-broken.png

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36

Steps to reproduce:

Running nightly build: version 31.0a1

Create a css selector:
input::-moz-placeholder:before {
}

I have created a jsfiddle for this as well: http://jsfiddle.net/mcdan/vT887/



Actual results:

The input::-moz-placeholder example works turning the placeholder blue but the :before does not work so you don't see the extra content.


Expected results:

Look at this in a webkit browser and you will see the "checkbox" unicode character before the placeholder. Also see attachments.

Comment 1

[mcdan]

Attachment: Working Chrome example

Comment 2

[Boris Zbarsky [:bzbarsky]]

CSS syntax does not allow pseudo-elements on pseudo-elements.  It sounds like WebKit unilaterally implemented some sort of syntax extension there...

Comment 3

[Paul Silaghi, QA [:pauly]]

(In reply to Boris Zbarsky [:bz] from comment #2)
> CSS syntax does not allow pseudo-elements on pseudo-elements.  It sounds
> like WebKit unilaterally implemented some sort of syntax extension there...
So, does this mean it's not a bug ?

Comment 4

[Boris Zbarsky [:bzbarsky]]

It means that deciding whether it's a bug is something the module owner needs to do, since it involves standards violations or changes to fix.