1179406 - Alias -webkit-column* CSS properties

Status: NEW

(Core :: CSS Parsing and Computation, defect)

Description

[Mike Taylor [:miketaylr]]

We should alias the following -webkit- prefixed CSS multicol properties to their standards equivalents (either via CSS Unprefixing or otherwise) in Gecko.

-webkit-column-break-after
-webkit-column-break-before
-webkit-column-break-inside
-webkit-column-count
-webkit-column-gap
-webkit-column-rule
-webkit-column-rule-color
-webkit-column-rule-style
-webkit-column-rule-width
-webkit-columns
-webkit-column-span
-webkit-column-width

Source <https://docs.google.com/spreadsheets/d/173d1p3LkW_LWk-VMnrxGPhTobtKSpED30Fys5ZJLttA/edit?pli=1#gid=51341101>

Comment 1

[Mike Taylor [:miketaylr]]

Note: we need to investigate just how interoperable our implementations are and the impact of aliasing these properties. It may be that this has huge wins for Microsoft, but very little to none for us.

Comment 2

[Daniel Holbert [:dholbert]]

Have we actually run into web-compat bugs resulting from use of these prefixed properties?  (I suspect not, given comment 1.)

Comment 3

[Mike Taylor [:miketaylr]]

I don't think we have, which suggests we should probably not take any action here for now. 

(It's on my TODO list to investigate.)

Comment 4

[Mike Taylor [:miketaylr]]

Going to remove as a blocker to Bug 1170789 because this doesn't qualify as "most important for mobile compat". If we find enough places this breaks sites, we can re-link.