[css3-images] aliasing of object-fit/object-position from Leif Arne Storset on 2012-02-22 (www-style@w3.org from February 2012) (original) (raw)

Erik Dahlstrom <ed@opera.com> skreiv Wed, 22 Feb 2012 13:16:45 +0100

In sections 5.4 and 5.5:

[[ User agents MAY accept ‘image-fit’ as an alias for ‘object-fit’, as a
previous version of this specification used that name. Authors must not
use ‘image-fit’ in their stylesheets. ]] [[ User agents MAY accept ‘image-position’ as an alias for
‘object-position’, as a previous version of this specification used that
name. Authors must not use ‘image-position’ in their stylesheets. ]]

This is because printers (from HP, I assume) use the property in firmware.
[0] It may not be a significant argument against your proposal, though:
these old printers will never be declared conforming to css3-images
anyway. Unless new printers have to work with old drivers or software or
something.

Are there any precedents in any CSS specifications for this kind of
aliasing? It sounds to me like a good way of introducing
incompatibilities between user agents.

Please consider removing the sentences that allow 'image-fit' and
'image-position'.

1. Nearest thing I can find for a citation for that is
   http://lists.w3.org/Archives/Public/www-style/2011Jul/0538.html. Not a
   very solid one, I must admit.

   Leif Arne Storset Core Technology Developer, Opera Software Oslo, Norway

Received on Wednesday, 22 February 2012 12:36:55 UTC