1520020 - Filter functions, e.g. blur(), brightness(), contrast(), ..., could be used without arguments

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, enhancement, P3)

Description

[Boris Chiou [:boris]]

Based on the updated spec [1], if we omit the arguments in these css filter functions (blur(), brightness(), contrast(), grayscale(), hue-rotate(), invert(), opacity(), saturate() and sepia()), omitted values are included and compute to their defaults. This can fix two wpt tests [2].

[1] https://drafts.fxtf.org/filter-effects/#supported-filter-functions
[2] /css/filter-effects/parsing/filter-computed.html
/css/filter-effects/parsing/filter-parsing-valid.html

Comment 1

[violet.bugreport]

Attachment: Bug 1520020 - Accept empty argument for some filters

Filters blur(), invert(), etc. can omit argument.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/17d1c1e26e31
Accept empty argument for some filters r=emilio

Comment 3

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/16913 for changes under testing/web-platform/tests

Comment 4

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/17d1c1e26e31

Comment 5

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Upstream PR merged

Comment 6

[Chris Mills [:cmills]]

We don't mention default values in our docs.