2008/5/23 howa <howac...@gmail.com>:

There's quite a big difference between testing that the client is a
particular (35% market share) browser version, to work around a known issue,
and testing that it isn't one of the 99% market share browsers, and refusing
to work. I'm not saying this should never be done (every site has a
different audience and support level/model), but that doesn't mean it should
always be done.

I have found the jQuery project to be quite consistent in adding plugins to
the core when they are so widely used, that nearly everyone is including
them along with jquery.js, so that the addition is natural and welcome. This
means lots and lots of people, over a long time, and puts the onus where it
should be, on the plugin author.

Look at the recent addition of the dimensions plugin (most in v1.2, the rest
in v1.2.5). For over a year, this has been one of the most requested plugin
additions to the core. So many sites and other plugins use it, it no longer
made sense for it to not be in the core. It's a model that keeps the core
lean, and gives users as much a vote as to what goes into jQuery as any
member of the dev team. Beautiful.

- Richard