143321 - [CTL-Thai] non-base level char can't be displayed alone (without base char)

Status: RESOLVED WORKSFORME

(Core :: Layout: Text and Fonts, defect)

Description

[Arthit Suriyawongkul]

see html in zip file attached - thai_glyph_testcase.html
- Thai non-base level characters (e.g. U+0E31, U+0E4B, ..)
can't be displayed without base character to composed with..
(please compare the glyph mozilla draw in 3rd column
with the picture took from Unicode chart in 2nd column)

expected result:
- Thai non-base level chars should able to be displayed alone.
e.g.
for input as picture #1 (input.gif),
it should be displayed as picture #2 (expected_output.gif).
--- every characters should be displayed, NONE of them should be disappeared.

Comment 1

[Arthit Suriyawongkul]

Attachment: (html+image files) --> test case

Comment 2

[Arthit Suriyawongkul]

tested with Mozilla 1.0.0+ (Build ID: 2002050908)

Comment 3

[Arthit Suriyawongkul]

Attachment: characters sequence of input

Comment 4

[Arthit Suriyawongkul]

Attachment: expected output

Comment 5

[Arthit Suriyawongkul]

input:
  ¡ (U+0E01) +    Ñ (U+0E31)  +  ¢ (U+0E02)

display:
  ¡Ñ¢                 <--- (U+0E31 displayed above U+0E01)
  U+0E31
  U+0E01  U+0E02      

----

input:
      Ñ (U+0E31)

display:
   <nothing>

Comment 6

[Frank Tang]

first of all, pleaes do not attach zip file to the bug report. 
second, this is not a localization bug but an internationalization bug. 

reassign to [e-mail]
katakai- can you ask the sun's browser team work on this ?

Comment 7

[Masaki Katakai]

Hi Arthit,

- Please correct OS section. you choose "Windows 98" as OS.
- Can you try to debug for this bug? or Prabhat?

Comment 8

[Arthit Suriyawongkul]

for the attachment, sorry Frank :(
i will better provide a link, after i uploaded it somewhere.

----

Katakai, thanks.  I will changed it to All.
(tested with Solaris, Windows 98)

Comment 9

[Prabhat Hegde]

Am looking at this this week. BTW, it is not expected to work for 
windows. We don't have makefile.win to build --enable-ctl on windows.

Comment 10

[Arthit Suriyawongkul]

I'm surely CONFIRM this bug.

somebody pls change its flag, thx.

Comment 11

[Roland Mainz]

Confirming per user comment #10 ...

Comment 12

[Arthit Suriyawongkul]

major loss of function,
severity --> MAJOR.

Comment 13

[Roland Mainz]

Over to new bugzilla component "Complex Text Layout" ...

Comment 14

[Masaki Katakai]

WORKSFORME.

I've verified these characters alone in my build and Netscape 7
of Solaris. Marked as WORKSFORME. I've verified this in UTF-8
locale.

Comment 15

[Samphan Raruenrom]

I've tested Arthit's test data in the zip file. It doesn't work on Firefox 1.0
on Windows XP.
The expected result should be, according to the Unicode standard, drawing each
combining character on the middle dot glyph.