428773 - U+FFFD replacement character is rendered as a hexbox instead of a question mark in a diamond (Windows without MS Office)

Status: RESOLVED WONTFIX

(Core :: Graphics: Text, defect, P3)

Description

[Egor Pelevin]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008041206 Minefield/3.0pre
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008041206 Minefield/3.0pre ID:2008041206

This bug is filed as per bug 423571 comment 7. 

Reproducible: Always

Steps to Reproduce:
Load data:text/html;charset=utf-8,<p>&#xfffd;</p> or data:text/html;charset=utf-8,<p>%ee</p>


Actual Results:  
A hexbox containing the digits 'FFFD'

Expected Results:  
A black diamond containing a white question mark

I don't have MS Office installed on this machine, so no Arial Unicode MS font. Fx 2 shows a question mark, which is better than a hexbox. Installing Arial Unicode MS solves the issue.

Comment 1

[j.j.]

Since 1.8.1 at least displays a "?", IMHO this needs

Keykwords >> regression
Version >> trunk

Comment 2

[j.j.]

Confirmed (was fixed for Mac, nice for Windows too)

Comment 3

[j.j.]

Requesting wanted1.9.0.x? to be consistent with Mac bug 423571 

Comment 4

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Should try this for 1.9.1, I wouldn't touch it for 1.9.0.x.

Comment 5

[Samuel Sidler (old account; do not CC)]

Minused per comment 4.

Comment 6

[Jim Mathies [:jimm]]

Works on Vista but not on XP.

Comment 7

[Ali Juma [:ajuma]]

This is still occurring on XP.

Comment 8

[u279076]

I get the expected result in Firefox 50.0a1. Please reopen this bug report if it still reproduces for you.

Comment 9

[u279076]

(In reply to Anthony Hughes (:ashughes) [GFX][QA][Mentor] from comment #8)
> I get the expected result in Firefox 50.0a1. Please reopen this bug report
> if it still reproduces for you.

Nevermind, I missed this was Windows XP specific. I can reproduce this with current builds in a Windows XP VM.

Comment 10

[Jonathan Kew [:jfkthame]]

This just means that XP doesn't include a font with support for the character U+FFFD. So a hexbox is the expected rendering. I don't really think it's worth us trying to provide some other kind of fallback rendering for that codepoint, in the absence of a font that supports it.

Comment 11

[j.j.]

(In reply to Jonathan Kew (:jfkthame) from comment #10)
> I don't really
> think it's worth us trying to provide some other kind of fallback rendering
> for that codepoint, in the absence of a font that supports it.

if so, this bug should be resolved as WONTFIX

Comment 12

[Jonathan Kew [:jfkthame]]

Yes, I'd agree with that.