Specific Kurdish characters not displayed correctly

[Erdal Ronahi]

Binary package hint: firefox

Unicode character U+06CE (ARABIC LETTER YEH WITH SMALL V) should have the same contextual forms as U+064A (ARABIC LETTER YEH).

The bug is described well at https://bugzilla.mozilla.org/show_bug.cgi?id=341303, however it seems to be an Ubuntu bug rather than a Firefox bug.

Compare the two screenshots in: https://bugzilla.mozilla.org/attachment.cgi?id=225598

The above part shows the bug: The ligatures in line 1 and 2 are different. Below the correct rendering, line 1 and 2 show the same ligature. The test case itself is at https://bugzilla.mozilla.org/attachment.cgi?id=225526

While the bug is fixed in Firefox 2.0 in Windows, Iceweasel 2.0.0.1 in Knoppix and Iceweasel 2.0.0.2 in Debian, it is still present in Ubuntu with Firefox 2.0.0.2. (Edgy and Feisty) Epiphany in Ubuntu is also affected.

[Bugzilla-tecnocode (bugzilla-tecnocode)]

Can you reproduce this in an official Mozilla build of Firefox?

[Popemedya (popemedya)]

(In reply to comment #1)
> Can you reproduce this in an official Mozilla build of Firefox?
>

I already done it ! i have tested it with all firefox versions... it has been like this since i know firefox.

[Bugzilla-tecnocode (bugzilla-tecnocode)]

The build identifier you submitted is for a Ubuntu-specific build, and we can't support those. What are the version numbers of the releases with which you've reproduced this, and are you *sure* they were official Mozilla builds downloaded from mozilla.org?

[Popemedya (popemedya)]

(In reply to comment #3)
> The build identifier you submitted is for a Ubuntu-specific build, and we can't
> support those. What are the version numbers of the releases with which you've
> reproduced this, and are you *sure* they were official Mozilla builds
> downloaded from mozilla.org?
>

I am pretty sure, I am in linux now, in ubuntu and installed firefoxy by package manager ... when I was in windows , I had the same problem, and I always download it from mozila , I have been using firefox for a year and it has always been like this.

it is not only my problem but millions of the kurds...and I know everybody who confrims the error .

[Popemedya (popemedya)]

(In reply to comment #3)
> The build identifier you submitted is for a Ubuntu-specific build, and we can't
> support those. What are the version numbers of the releases with which you've
> reproduced this, and are you *sure* they were official Mozilla builds
> downloaded from mozilla.org?
>

if you dont belive me , why you dont just go to a kurdish site and see the error yourself?
take a look a this site
http://dejavu.sourceforge.net/wiki/index.php/Kurdish

you can see the screenshot of the text in Konqueror Web Browser at right and i left you can see the text..[see the diffrence]

[Bugzilla-tecnocode (bugzilla-tecnocode)]

(In reply to comment #5)
> if you dont belive me , why you dont just go to a kurdish site and see the
> error yourself?

I'm on a trunk build, and it's currently having problems with rendering Kurdish text at all (in fact there are rather a few problems with all font rendering).

[Smontagu (smontagu)]

Created attachment 225526
Minimal testcase

[Pavlov (pavlov)]

Created attachment 225598
screenshot between 1.5 and trunk

Here is what I see in 1.5 and in my current build. I'd say that this works for me at this point...

[Popemedya (popemedya)]

(In reply to comment #8)
> Created an attachment (id=225598) [edit]
> screenshot between 1.5 and trunk
>
> Here is what I see in 1.5 and in my current build. I'd say that this works for
> me at this point...
>

what is trunck ? where I can download the trunck version for ubuntu ?

[Pavlov (pavlov)]

sorry, my screenshot was for windows -- I'm not sure what the deal with Linux is at the moment.

[Erdal Ronahi (erdalronahi)]

I have been annoyed by this bug, too. I see it in Firefox under Linux a lot, but I am unsure whether it is really a Firefox bug.

I think it may be related to Pango in GTK/GNOME, because there are lots of bugs and issues with Pango and ligatures in Ubuntu (maybe elsewhere, too).

[Erdal Ronahi (erdalronahi)]

I can confirm now that this also happens under Windows XP with Firefox 1.5.0.4, with the font Tahoma, which is well capable of displaying that letter actually.

[Erdal Ronahi (erdalronahi)]

The same is valid for U+06D5. It should right-join, but it doesn't. Reproducible on Windows and Linux, Firefox 1.5

[Erdal Ronahi (erdalronahi)]

This bug is still present in Firefox 2 beta 1, which I just downloaded. The official version, no Ubuntu build.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1b1) Gecko/20060710 Firefox/2.0b1

[Smontagu (smontagu)]

*** Bug 354107 has been marked as a duplicate of this bug. ***

[Erdal Ronahi (erdalronahi)]

I have just tested some other distros, namely Knoppix with IceWeasel 2.0.0.1 and Debian Etch with IceWeasel 2.0.0.2. To my surprise both do NOT have the bug. Also a nightly build of Firefox 3 did NOT have the bug.

So you guys may be right that this is in fact an Ubuntu bug, not a firefox bug. I'll try to track down the real problem.

[Erdal Ronahi (erdalronahi)]

Binary package hint: firefox

Unicode character U+06CE (ARABIC LETTER YEH WITH SMALL V) should have the same contextual forms as U+064A (ARABIC LETTER YEH).

The bug is described well at https://bugzilla.mozilla.org/show_bug.cgi?id=341303, however it seems to be an Ubuntu bug rather than a Firefox bug.

Compare the two screenshots in: https://bugzilla.mozilla.org/attachment.cgi?id=225598

The above part shows the bug: The ligatures in line 1 and 2 are different. Below the correct rendering, line 1 and 2 show the same ligature. The test case itself is at https://bugzilla.mozilla.org/attachment.cgi?id=225526

While the bug is fixed in Firefox 2.0 in Windows, Iceweasel 2.0.0.1 in Knoppix and Iceweasel 2.0.0.2 in Debian, it is still present in Ubuntu with Firefox 2.0.0.2.

[Erdal Ronahi (erdalronahi)]

Reported this in Ubuntu's bugtracker Launchpad as bug #91766

https://bugs.launchpad.net/firefox/+bug/91766

[Erdal Ronahi (erdalronahi)]

I just downloaded and tested the official Mozilla builds in Ubuntu 6.10.

The bug is present in 2.0.0.2 (en-US and ku-TR tested), but is fixed in 3.0a2 (nightly build).

I am unsure what that means: Is it an Ubuntu bug because the bug appears also in the official builds when run in Ubuntu, or is it a Firefox bug because it appears in the official builds?

[Freddy Martinez (freddymartinez9)]

Edited description for clarity.

[Erdal Ronahi (erdalronahi)]

John Vivirito changed this to "needs info". What info do you need? I'll be glad to give it.

[Freddy Martinez (freddymartinez9)]

This is a duplicate bug report which has more information. Please bear with us, thanks.

[Smontagu (smontagu)]

Let's keep "Layout: Bidi Hebrew and Arabic" for bugs that directly relate to the "bidi-ness" of Arabic text, and leave bugs with Arabic shaping in "Layout: Fonts and Text".

(In reply to comment #18)
> I am unsure what that means: Is it an Ubuntu bug because the bug appears also
> in the official builds when run in Ubuntu, or is it a Firefox bug because it
> appears in the official builds?

It's a Firefox bug, but in 2.x and below it only appears on builds without Pango support. The Ubuntu builds of 2.x use Pango, so they don't necessarily have the bug (this also depends on some environment settings).

In 3.x the bug should be fixed in all builds.

[Erdal Ronahi (erdalronahi)]

That's great, then let me tell you the one exception: The letter "Lam with small v" (U+06b5) still produces the bug. I shall attach screenshots from Firefox 3.0a4 and Konqueror to illustrate the problem.

[Erdal Ronahi (erdalronahi)]

Created attachment 263266
Screenshot showing the Kurdish/Arabic text, U+200c makes trouble

[Erdal Ronahi (erdalronahi)]

Created attachment 263267
The same page in Konqueror, displayed correctly

URL: http://ku.wikipedia.org/wiki/ماڵەوه or http://ku.wikipedia.org/wiki/%D9%85%D8%A7%DA%B5%DB%95%D9%88%D9%87

[Erdal Ronahi (erdalronahi)]

After updating to the latest patches and builds, even "U+06b5" is displayed correctly. Great! However, the important character U+200c (Zero-width-non-jointer, ZWNJ) is now not displayed at all. U+200c is often used as a workaround in Persian and Kurdish (Sorani), without it Firefox will be unusable for these languages. This problem has never before appeared until 3.0a.

Both screenshots are done with Ubuntu 7.04, Firefox 3.0a4 (native build) and Konqueror.

By the way, Konqueror is much smarter when showing URLs with arabic letters, look at the screenshots.

[Erdal Ronahi (erdalronahi)]

This bug is not longer there in Gutsy Gibbon, as of May, 21st 2007.

I have no idea why this is so, since the Firefox version in Gutsy is still the same as in Feisty, 2.0.0.3. Hope it stays like this and does not break again.

[Erdal Ronahi (erdalronahi)]

In Firefox 3 Alpha 8 all the issues are fixed for me now.

I am not sure, however, if we should close this bug, since it refers to Firefox 2.

[Smontagu (smontagu)]

For Firefox 2 this is WONTFIX (for trunk WORKSFORME)

[Erdal Ronahi (erdalronahi)]

I just checked this in Maverick. The default fonts still give the error like in the minimal testcase from the mozilla bugreport:

https://bug341303.bugzilla.mozilla.org/attachment.cgi?id=225526

But if you have DejaVu-Extra installed, this testcase is fine:

http://dejavu-fonts.org/wiki/index.php?title=Kurdish

[Adolfo Jayme Barrientos (fitojb)]

I can't reproduce this in Firefox 20 and Ubuntu 13.04.

[Erdal Ronahi (erdalronahi)]

Fixed indeed.