5564 – 'font' shorthand parsing should be more tolerant in quirks mode

RESOLVED INVALID 5564

'font' shorthand parsing should be more tolerant in quirks mode

https://bugs.webkit.org/show_bug.cgi?id=5564

Summary 'font' shorthand parsing should be more tolerant in quirks mode

David Latapie

Reported 2005-10-30 10:00:38 PST

Copied from bugreport.apple.com to make it publicly avaiblable On the following code, Test 1 and test 2 should both appear italic but only test 2 does <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/ xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr-fr"> <head> <style type="text/css"> .test1 {font:italic 1.5em} .test2 {font:italic 1.5em helvetica} </style> </head> <body> Test 1 Test 2 </body> </html>

Attachments
First attempt (2.05 KB, patch) 2006-05-30 13:32 PDT, Rob Buis	darin: review-	Details Formatted Diff Diff
Now with testcase (5.53 KB, patch) 2006-06-01 02:23 PDT, Rob Buis	no flags	Details Formatted Diff Diff
Now with expected results (10.27 KB, patch) 2006-06-01 13:57 PDT, Rob Buis	darin: review-	Details Formatted Diff Diff
Now uses Arial (10.21 KB, patch) 2006-06-02 02:26 PDT, Rob Buis	no flags	Details Formatted Diff Diff
Improved patch (10.15 KB, patch) 2006-06-02 13:20 PDT, Rob Buis	no flags	Details Formatted Diff Diff
Safari 15.5 matches other browsers (678.33 KB, image/png) 2022-06-01 05:36 PDT, Ahmad Saleem	no flags	Details
Show Obsolete (4) View All Add attachment proposed patch, testcase, etc.

Nicholas Shanks

Comment 1 2006-01-20 07:01:53 PST

I did a quick test with the following HTML. What is observed (417.8 & ToT) is stated after the equals for each case. It should be self explanatory: (n.b. I am aware that many of these do not adhere to the specs, but this was in compatibility mode anyway) 24pt italic = 24pt 24pt italic Gentium = 24pt 24pt italic 'Gentium' = 24pt Gentium italic 24pt = Fails italic 24pt Gentium = 24pt Gentium Italic italic 24pt 'Gentium' = 24pt Gentium Italic Gentium 24pt italic = fails 'Gentium' 24pt italic = fails Gentium italic 24pt = fails 'Gentium' italic 24pt = fails

Nicholas Shanks

Comment 2 2006-02-21 12:18:56 PST

See also bug #3303.

Rob Buis

Comment 3 2006-05-13 09:43:00 PDT

AFAICS the original testcase uses the font shorthand in an illegal way. Also Firefox renders it the same as Safari does. So while bug 3303 seems valid, I question this bug report. Opinions? Cheers, Rob.

David Latapie

Comment 4 2006-05-13 11:57:07 PDT

(In reply to comment #3) > AFAICS the original testcase uses the font shorthand in an illegal way. It looks correct to me. http://www.w3.org/TR/CSS21/fonts.html#font-shorthand Why do you think it is incorrect?

Alexey Proskuryakov

Comment 5 2006-05-13 13:52:47 PDT

(In reply to comment #4) > Why do you think it is incorrect? The spec says that <'font-size'> and <'font-family'> are not optional (if we forget about system fonts, of course). See <http://www.w3.org/TR/CSS21/about.html#q7> for the description of the syntax used. Safari behavior matches Firefox; however, WinIE allows this syntax in quirks mode (it behaves correctly in strict mode). Please note that the presence of an XML declaration triggers quirks mode in WinIE.

David Latapie

Comment 6 2006-05-13 16:31:35 PDT

OK then. I close the bug as INVALID.

Alexey Proskuryakov

Comment 7 2006-05-14 00:34:31 PDT

Joost, what is your opinion about this issue?

Joost de Valk (AlthA)

Comment 8 2006-05-14 01:31:19 PDT

Hmm, though it's not fully standards compliant, i think we should render this as IE does. It's quite clear what people mean when they write this down ".test1 {font:italic 1.5em;}" so, i think this should be reopened. Hyatt, what;s your opinion?

Dave Hyatt

Comment 9 2006-05-14 15:19:47 PDT

Being more permissive in quirks mode to match WinIE seems reasonable, so yeah, I agree that we should keep this open.

Rob Buis

Comment 10 2006-05-30 13:32:41 PDT

Created attachment 8606 [details] First attempt My first stab at this, works like winIE on the test snippet. I can make a testcase if the code gets okayed, maybe based on the test snippet? Cheers, Rob.

Darin Adler

Comment 11 2006-05-31 14:54:44 PDT

Comment on attachment 8606 [details] First attempt Looks good. We should write test cases not just for the bug fixed, but ideally to cover each different "if" statement that's changed.

Rob Buis

Comment 12 2006-06-01 02:23:35 PDT

Created attachment 8636 [details] Now with testcase

Darin Adler

Comment 13 2006-06-01 13:21:25 PDT

Comment on attachment 8636 [details] Now with testcase Patch needs to include expected results too.

Rob Buis

Comment 14 2006-06-01 13:57:40 PDT

Created attachment 8651 [details] Now with expected results Hi Darin, Totally forgot about that :) Now included, let me know if anything else needs improvement.... Cheers, Rob.

Darin Adler

Comment 15 2006-06-01 17:03:11 PDT

Comment on attachment 8651 [details] Now with expected results I don't think that a font named "Gentium" is standard with Mac OS X, so I think these tests require installing a non-standard font. Can we make a version of this test that works with some more-standard font?

David Kilzer (:ddkilzer)

Comment 16 2006-06-02 02:11:19 PDT

This bug appears to be in Radar given the original URL, but the specific Radar bug number is not listed here. Poster, could you list the Radar bug number?

Rob Buis

Comment 17 2006-06-02 02:26:16 PDT

Created attachment 8660 [details] Now uses Arial Apart from it now using Arial I also fixed a typo, pointed out by nickshanks. Cheers, Rob.

Rob Buis

Comment 18 2006-06-02 13:20:23 PDT

Created attachment 8668 [details] Improved patch I included the wrong expected results in the patch, this one fixes it. Cheers, Rob.

Maciej Stachowiak

Comment 19 2006-06-04 21:18:36 PDT

Comment on attachment 8668 [details] Improved patch r=me

David Kilzer (:ddkilzer)

Comment 20 2006-06-05 20:08:58 PDT

Committed revision 14740.

David Harrison

Comment 21 2006-07-19 07:14:19 PDT

Hyatt backed out this fix in r15490, with the comment: "Back out the fix for 5564, since it turns out font:x-small; is a pretty prominent IE-specific CSS hack. Because Web sites rely on IE's incorrect font parsing as a means of also correcting IE's incorrect font size rules. This fixes Yahoo.com."

Joost de Valk (AlthA)

Comment 22 2006-07-19 07:34:55 PDT

Reopening per the previous comment, this should probably have a new patch.

Alexey Proskuryakov

Comment 23 2006-07-24 08:59:37 PDT

Comment on attachment 8668 [details] Improved patch Clearing the review flag, so that this doesn't show up in commit queue.

Ahmad Saleem

Comment 24 2022-06-01 05:36:34 PDT

Created attachment 459924 [details] Safari 15.5 matches other browsers I changed the test case from Comment 1 into JSFiddle as below: Link - https://jsfiddle.net/z0gyL7nu/ Later, I tested it across browsers and as shown in the attached picture, all works same. Should we mark this as Closed or "RESOLVED INVALID"?

Sam Sneddon [:gsnedders]

Comment 25 2022-07-01 12:00:15 PDT

https://quirks.spec.whatwg.org/ has no quirk for this, so yeah, let's assume we aren't ever going to match WinIE.

Myles C. Maxfield

Comment 26 2022-07-05 21:42:27 PDT

🆒

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