60418 - ASCII control characters are displayed unnecessarily in Browser

Status: VERIFIED WONTFIX

(Core :: Internationalization, defect, P3)

Description

[Katsuhiko Momoi]

** Observed with 11/8/2000 Win32 MN build **

There are some web page which contain a sequence of
Control characters (e.g. CR LF). Thus we run into pages which
display these "non-display" characters as vertical bars.
This looks ugly.

Comment 1

[Katsuhiko Momoi]

Attachment: A web page illustrating the problem.

Comment 2

[Katsuhiko Momoi]

You see 2 vertical bar symbols afer the word "...Collection".
They seem to be Control characters surrounded by SP.
e.g. 0x20 0x0A 0x20 0x20 0x0A 0x20 (found after "Collection")

Comment 3

[Katsuhiko Momoi]

Attachment: A shorter version of the above web page illustrating the problem.

Comment 4

[Katsuhiko Momoi]

As I edited the longer web page into ths shorter one,
my editor changed some of the Control character
sequence in this one. But you can still see the problem.
Not completely sure but in this shorter case, the
sequence seems to be:

0x0B 0x09 0x0B

Comment 5

[nhottanscp]

Attachment: edited to remove Japanese characters and META charset to make the file more generic

Comment 6

[nhottanscp]

Attachment: more simplification

Comment 7

[nhottanscp]

Reassign to erik.

Comment 8

[Erik van der Poel]

The document has 0x0B (vertical tab) characters. I doubt that these are legal in
HTML, and in any case, they don't have any sensible meaning. I would prefer to
get those Web sites to clean up their pages. Marking WONTFIX.

Comment 9

[Katsuhiko Momoi]

The 12nd attachment does contain 0x0B. But the
2nd one was created by me editing down the original
long web page. In the original, I don't see 0x0B
but rather a sequence SP and LF (0x20 and 0x0A).
I'm not sure if this is an illegal sequence,

The fact is also that neither Comm 4.7x nor IE displays these
control characters. 

Comment 10

[Erik van der Poel]

I saw 0x0B in the first attachment. Marking WONTFIX.

Comment 11

[Katsuhiko Momoi]

OK. I looked at the data again which have a lot of non-displaying
lines. I was looking at a wrong line which contained the same wording
but did not show on the Browser.
So you're right. All the problems I see now are attributable
to the presence of 0x0B.
But it is also true other browsers I looked at do not
display this control character (vertical tabulation).
I take the view that we need to build in some fault-
tolerance and not doing so will only hurt us in the
long run.

Comment 12

[Erik van der Poel]

Fault tolerance? That's what we did in Nav1-4, and see what happened to the Web.
Lots and lots of broken HTML, only because the browsers accepted that crap. We
need to stop accepting it, at some point. Why not start now?

How many pages have this problem? If each 0x0B only shows a small glitch, it's
not a huge problem.

If you reopen this, try assigning it to Eric Krock or some other evangelist.

Comment 13

[Teruko Kobayashi]

Verified as wonfix.