Bug 116870 – Allow no space between "background-position:" dimensions

• Component: CSS
• Status: RESOLVED FIXED

[Sergio Villar Senin]

We should consider merging:
https://src.chromium.org/viewvc/blink?view=rev&revision=149314

Apart from fixing the "background-position: 1cm+1cm" case, it has a nice side effect, which is that dramatically reduces the number of shift/reduce conflicts.

See http://code.google.com/p/chromium/issues/detail?id=225020 for the original bug report.

[Sergio Villar Senin]

Created attachment 203353 [details]
Patch

[Darin Adler]

Comment on attachment 203353 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=203353&action=review

Looks OK to me. Hope we have sufficient test coverage. I’d like this better if it came with more new tests.

> Source/WebCore/css/CSSGrammar.y.in:1817
> -    '(' maybe_space calc_func_expr maybe_space ')' maybe_space {
> +    '(' maybe_space calc_func_expr calc_closing_paren {

Seems overkill to have a separate token just for optional space followed by parenthesis; maybe there is some good reason for it, though.

[Build Bot]

Comment on attachment 203353 [details]
Patch

Attachment 203353 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.appspot.com/results/661193

New failing tests:
fast/dom/location-new-window-no-crash.html

[Build Bot]

Created attachment 203365 [details]
Archive of layout-test-results from webkit-ews-14 for mac-mountainlion-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: webkit-ews-14  Port: mac-mountainlion-wk2  Platform: Mac OS X 10.8.3

[Sergio Villar Senin]

(In reply to comment #2)
> (From update of attachment 203353 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=203353&action=review
> 
> Looks OK to me. Hope we have sufficient test coverage. I’d like this better if it came with more new tests.
> 
> > Source/WebCore/css/CSSGrammar.y.in:1817
> > -    '(' maybe_space calc_func_expr maybe_space ')' maybe_space {
> > +    '(' maybe_space calc_func_expr calc_closing_paren {
> 
> Seems overkill to have a separate token just for optional space followed by parenthesis; maybe there is some good reason for it, though.

I think the idea is just to reduce the (apparent) amount of rules as they share the same code.

[Sergio Villar Senin]

(In reply to comment #3)
> (From update of attachment 203353 [details])
> Attachment 203353 [details] did not pass mac-wk2-ews (mac-wk2):
> Output: http://webkit-queues.appspot.com/results/661193
> 
> New failing tests:
> fast/dom/location-new-window-no-crash.html

Looks like it isn't related to my changes and this test was already failing in the EWS for some other patches, so I'll likely land this later.

[Sergio Villar Senin]

Comment on attachment 203353 [details]
Patch

Clearing flags on attachment: 203353

Committed r150972: <http://trac.webkit.org/changeset/150972>

[Sergio Villar Senin]

All reviewed patches have been landed.  Closing bug.