1158034 - Burmese Myanmar font not displayed properly in mac ios and andriod tablet/mobile

Status: RESOLVED WONTFIX

(Core :: Graphics: Text, defect)

Description

[Schott]

Attachment: screenshot_on_the_problem.png

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36

Steps to reproduce:

I created a page that need to display some information in Burmese font, I have installed the related fonts onto the server that displays the page (Zawgyi-One.ttf and  WININNWA.ttf), the 2 fonts are also embedded in the css using @font-face. 


Actual results:

The page is showing up okay on chrome, safari and Firefox (on desktop only). However on an andriod tablet and mac OS (tested on Yosemite) are not displaying them properly


Expected results:

It should display same as what is displayed on chrome and safari.

Comment 1

[Schott]

Comment on attachment 8597080 [details]
screenshot_on_the_problem.png

load https://www.mtalvernia-hospital.org/international-patients/ on the browser to check

Comment 2

[Jonathan Kew [:jfkthame]]

I don't know anything about "WININNWA.ttf", but the "Zawgyi-One.ttf" font linked from https://www.mtalvernia-hospital.org/, at least, does not have standards-compliant support for Burmese script (even though it uses Burmese character codes). Accordingly, text that displays "correctly" with Zawgyi-One will NOT display correctly when using fully Unicode-compliant software and fonts.

To illustrate this, load the Burmese section at https://www.mtalvernia-hospital.org/international-patients/, copy/paste some of the text to Notepad on Windows, and set the font to Microsoft's Myanmar Text; it's a mess, because the text is not encoded according to the Unicode standard. Or copy it from Safari to TextEdit on Mac OS X, and apply Apple's Myanmar MN font; again, it displays as junk, because the text is not correctly encoded.

In general, Gecko does not attempt to support the use of non-Unicode "hacked" fonts for scripts that involve complex shaping behavior. It may work some of the time, on some platforms, but offers no guarantee of consistent behavior or interoperability. A standards-compliant font such as SIL International's Padauk will work better (together with correctly Unicode-encoded text).

Comment 3

[Bas Schouten (:bas.schouten)]

This sounds to me like wontfix. Correct me if I'm wrong.