161812 - 'small square' characters being displayed in error - IE ignores

Status: RESOLVED DUPLICATE of bug 106311

(Core :: Layout: Text and Fonts, defect, P2)

Description

[Christine Hoffman]

Tested on the following:

Win2000 - Netscape 7.0PR1
Win2000 - Mfcembed 08_08_08_1.0
Win2000 - Netscape 08_08_11_ trunk
MacOSX - Ppembed 07_23_05_1.0
MacOSX - Netscape 08_08_08_trunk

Open the url above. Under 'Wild Bird Care', click on 'Bird Books'. Next page,
click  on 'Bird Books' If you look at several links there are extraneous
non-ascii characters (or control characters) displayed. These are not displayed
in IE.

See attached simplified testcase below.

Comment 1

[Christine Hoffman]

Attachment: simplified testcase

Comment 2

[Christine Hoffman]

Per beppe, ccing [e-mail]

Comment 3

[Niklas Dougherty]

From the HTML 4.01 spec:

"9.1 White space

The document character set includes a wide variety of white space characters.
Many of these are typographic elements used in some applications to produce
particular visual spacing effects. In HTML, only the following characters are
defined as white space characters:

    * ASCII space ( )
    * ASCII tab (	)
    * ASCII form feed ()
    * Zero-width space (​)"

These characters, however, are line tabs () (vertical tabs), which means
they are not considered white space. Section 5.4 of the HTML spec then applies,
meaning the agent should "Adopt a clearly visible, but unobtrusive mechanism to
alert the user of missing resources.".

Comment 4

[Christine Hoffman]

Changing summary from 'non-ascii' characters to 'small squares' because I'm not
sure I'm using the right term

Comment 5

[Carine Held]

Reproduced in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-CA; rv:1.0.2)
Gecko/20021120 Netscape/7.01, Win XP

Comment 6

[Boris Zbarsky [:bzbarsky]]

Those show as spaces in Linux....

Comment 7

[Simon Montagu :smontagu]

*** This bug has been marked as a duplicate of 106311 ***