From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:0.9.7) Gecko/20011221 BuildID: 2001122106 happened on 0.9.6 and 0.9.7 When open any Thai web page, the character 'To Taharn' (alphabet number 23, press ALT+183 on windows) is too small and the vowel over this character is move to the next character. especially with font 'MS San Serif' and page that specify browser to use this font. Reproducible: Always Steps to Reproduce: 1. set font in preference to MS San Serif 2. open some thai website (for example : http://linux.thai.net) 3. see the strange character. There is no problem like this on 0.9.5 and below. only 0.9.6 above, so I think there is some problem occur on this time.

We don't officially support Thai. (correct me if I'm wrong) and I am surprised to learn the mozilla was displaying Thai correctly at all. teruko: can we confirm this bug? There are bunch of Thai related bugs assigned to multiple people http://bugzilla.mozilla.org/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&email1=&emailtype1=substring&email2=&emailtype2=substring&emailreporter2=1&bugidtype=include&bug_id=&changedin=&votes=&chfieldfrom=&chfieldto=Now&chfieldvalue=&short_desc=thai&short_desc_type=substring&long_desc=&long_desc_type=substring&bug_file_loc=&bug_file_loc_type=substring&status_whiteboard=&status_whiteboard_type=substring&keywords=&keywords_type=anywords&field0-0-0=noop&type0-0-0=noop&value0-0-0=&cmdtype=doit&namedcmd=mozilla0.9&newqueryname=&order=Reuse+same+sort+as+last+time I'll assign this to shanjian.

sorry, our knowledge about is very limited. Could you enlarge the screen shot and circle with some mark with the problem area. It will be nice if you can also produce some smaller test page for this.

>We don't officially support Thai. (correct me if I'm wrong) I don't think that is our position. We know there are still a lot of line breaking problem on thai. But we try to fix display problem as possible as we can.

Dear ftang the area is the character like 'n' (big and bold) in the captured image.

reporter, Could you post the correct display with "MS San Serif" font? I am also wondering if the problem is the font is really "MS San Serif". On my system, I could not find "MS San Serif" contains any Thai characters. This should be a font problem if you don't see this problem with other font. You might also want to post your font here for us to examine.

http://linux.thai.net in Mozilla 0.9.8 on Windows 98 SE

test case (+ brief report)

Thai Character Tho Thahan --> unicode 0E17 from the html test case, we've found that the problems may occur only with "MS Sans Serif" font. 1. font size of Thai Character Tho Thahan will differs from others. (bigger or smaller) ** see green circles in screenshot #2 ** 2. none of characters will able to be cell-composed with Thai Character Tho Thahan, they will be pushed behind. ** see red circles in screenshot #2 ** FYI, Windows 2000 and newer doesn't has "MS Sans Serif", it has only "Microsoft Sans Serif". "Microsoft Sans Serif" is a newer version of "MS Sans Serif". ---- confirm this bug.

note: this issue with "MS Sans Serif" doesn't occurs in Internet Explorer (viewing the same page/url)

This appears correctly according to enlarged screen capture for me. I am running Windows XP. This might be a font issue. Also, Windows 98 does not have as much Unicode/international support as NT-based systems. Perhaps the problem reporter could try updating their fonts at http://www.microsoft.com/typography/fontpack/default.htm The font properties extension at http://www.microsoft.com/typography/property/property.htm can list the font version as well as Unicode types supported, presence of Euro character, etc.

Dear Brant 'MS San Serif' is quite standard thai font on Windows 98/ME machine. (although Win ME users can use 'Microsoft San Serif' instead and get no problem). I think that's difficult for making all Win98 users to update their fonts. So we need to fix it.

the same issue also occurs in printing (tested in Windows 98 SE)

hi arthit, Do you find the same issue on CTL enabled build on linux/Solaris (--enable-ctl)? I just tried it and Tho Thahan (\u0e17) was rendered correctly on both Solaris and Linux. So it seems that proper presentation form is not generated on windows for MS San Serif.

Moving arthit's mail into the bug. prabhat. Date: Wed, 29 May 2002 11:18:26 +0700 From: Art - Arthit Suriyawongkul <Arthit.Suriyawongkul@Sun.COM> Subject: Re: [Bug 117484] Wrong Display with Thai Character (Alt+183) To: "Prabhat.Hegde" <Prabhat.Hegde@Sun.COM> MIME-version: 1.0 Content-transfer-encoding: 7bit X-Accept-Language: th, en-us User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.0+) Gecko/20020525 this bug occurs only on Windows, with "MS Sans Serif" font. Linux/Solaris are not affected by this. (or may be it is because Linux/Solaris don't has that font ?) regards, Art

I'm using Firefox on Windows XP. I look at the HTML test case (id 68815) and I don't see the problem. Could it be that the problem is fixed or it only happens on Windows 98?

This is probably a font issue.

I mean a combination of font + OS, MS Sans Serif + Windows 98.

This bug can be found in Win95/98 only. Windows ME and above doesn't have this bug.

WONTFIX Win9x-only bug.