41411 - Table's "rules" attribute overrides CSS border

Status: VERIFIED FIXED

(Core :: Layout: Tables, defect, P3)

Description

[fantasai]

Overview:
	Rules=none suppresses all internal table borders.

Comment 1

[Bernd Mielke]

: [e-mail]  - could you please read the Bug Writing Guidelines at
<http://www.mozilla.org/quality/bug-writing-guidelines.html> to see the
kinds of information we need in a bug report.  Please report back with more
information (like BuildID and steps to reproduce) after reading those
guidelines and consider using the Bugzilla Helper to report future
bugs.

The Helper can be found at <http://www.mozilla.org/quality/help/bug-form.html>
Thanks for your help in testing Mozilla.

Bernd

Comment 2

[fantasai]

Sorry, I accidentally hit TAB+enter before finishing the writeup. ^^

Overview:
	
	Rules=none suppresses all internal table borders.

	This is contrary to CSS2, section 6.4.4, which specifies that CSS
	properties override HTML's presentational markup.

	Additionally, "rules=none" is the default behavior specified by
	HTML 4.01, and a table that does not have this attribute set should
	display the same as a table with "rules=none" explicitly set in the
	<TABLE> tag.

	CSS2:6.4.4 - 
		http://www.w3.org/TR/REC-CSS2/cascade.html#q12
	HTML4.01:11.3.1 - 
		http://www.w3.org/TR/html4/struct/tables.html#adef-rules

Steps to Reproduce:
	Open up testcase (to be attached shortly).

Actual Results:

	Table 1, which has no attributes in the <TABLE> tag, renders the CSS
	border on Cell A correctly.

	Table 2, which has "rules=none" in the <TABLE> tag, does not display
	the border on Cell A.

Expected Results:

	Both tables should display exactly the same.

Tested with May 29th build (id=2000052908) on Windows 2000 ¬_¬

Comment 3

[fantasai]

Attachment: Table Borders - HTML vs. CSS

Comment 4

[Bernd Mielke]

[e-mail]  could you make a comment how your bug report relates to
bug 21076.

Thanks

Bernd

Comment 5

[fantasai]

From looking at it just now, I thought I'd need to understand the underlying 
code to do that, but..

I ran another test on this and found that the "rules" attribute overrides any 
CSS border, no matter what its value.

  I think this might be the problem with the implementation of "rules" without a
  "border" in bug 21076 -- the rules attribute needs borders specified in order
  to display properly.

However, that's besides the point: the rules attribute is overriding the CSS 
borders. I changed the summary and will attach a new testcase to demonstrate.

Comment 6

[fantasai]

Attachment: Table's Rules - HTML vs. CSS

Comment 7

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Confirming bug.

Why isn't there a standardized attribute-mapping mechanism so the code doesn't
have to get this right every time?  Or is there?

Comment 8

[karnaze (gone)]

We had always assummed that an explicit rules= overrides CSS, but maybe this is 
wrong.

This bug has been marked "future" because we have determined that it is not 
critical for netscape 6.0. If you feel this is an error, or if it blocks your 
work in some way -- please attach your concern to the bug for reconsideration.

Comment 9

[fantasai]

Attachment: Emulating table "rules" with CSS

Comment 10

[fantasai]

I figured out some style rules that might work. I realize that this probably 
won't actually be implemented CSS, but it might help as a suggestion. View 
source to see comments (within the style sheet).

BTW, IE5 (Windows) handles "Table's Rules - HTML vs. CSS" correctly in all 
except the last table (with rules=groups).

Comment 11

[Amarendra Hanumanula]

QA contact update

Comment 12

[Kevin McCluskey (gone)]

Marking nsbeta1+

Comment 13

[karnaze (gone)]

Fixed by meta bug 41262

Comment 14

[Amarendra Hanumanula]

 All the three testcases works fine on build : 2002031303.
Marking verified