Decomposed, accented unicode characters are not displayed as a single character




13 years ago
10 years ago


(Reporter: Dean Harding, Assigned: smontagu)


(Blocks: 1 bug)

Dependency tree / graph

Firefox Tracking Flags

(Not tracked)




(4 attachments)



13 years ago
User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.40607)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b) Gecko/20050207

If you look at the page at, it had the 
string "àáâãäå" in different non-normalized forms (i.e. some characters 
composed, some decomposed).

All the strings look the same in IE on Windows, but both Mozilla and Firefox 
display the strings incorrectly (though differently, for some reason).

Reproducible: Always

Steps to Reproduce:
1. Open the url
2. Have a look under the text "static void Main()..." for the various non-
normalized form of the string "àáâãäå"
3. On Mozilla and Firefox, the string all look different, even though they're 
supposed to look the same.

Actual Results:  
Different forms of the string "àáâãäå" look different.

Expected Results:  
Different forms of the string "àáâãäå" should look the same.

Comment 1

13 years ago
Created attachment 173717 [details]
This is how the text looks in Mozilla

This is how the text looks in Mozilla.	Notice how all the decomposed combining
characters display separate to the base character.

Comment 2

13 years ago
Created attachment 173718 [details]
This is how the text looks in Firefox

This is how the text looks in Firefox.	Notice how it seems to do a "better"
job than Mozilla - it composes some characters properly, but others are not
composed, and still others have no or the wrong accent!

Comment 3

13 years ago
Created attachment 173719 [details]
This is how the text looks in IE

Notice how all the strings look the same.  This is how it *should* be.

Comment 4

13 years ago
To display the strings in my original post, you'll have to change the encoding 
of this page to UTF-8 - I'm not sure why Bugzilla is returning ISO-8859-1... :-


13 years ago
Depends on: 218887

Comment 5

13 years ago
By the way, which version of Mozilla are you using, and on what Windows version?
I don't see any difference between Mozilla trunk and Firefox 1.0, both on
Windows XP.
Ever confirmed: true

Comment 6

13 years ago
I used the nightly build of Mozilla, from a couple of days ago.  But just the 
latest release of Firefox (i.e. not a nightly build).  On Windows XP SP2.

I didn't try a nightly build of Firefox, so I don't mind if we assume that's 
the "real" problem...


11 years ago
Blocks: 359774

Comment 7

10 years ago
Created attachment 267149 [details]
testcase extracted from the URL


10 years ago

Comment 8

10 years ago
This bug does not appear to be Windows specific as I am seeing the same thing with  decomposed (NFD) Unicode strings with the above text attachment on Mac OS 10.4.10 with Firefox

Comment 9

10 years ago
In current trunk I no longer see the bug on either Windows or Mac, and for Linux it is covered by bug 197649, so I am marking this WORKSFORME.
Last Resolved: 10 years ago
OS: Windows XP → All
Hardware: PC → All
Resolution: --- → WORKSFORME


10 years ago
Duplicate of this bug: 398400
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