Add warning to get_window_extent

[tacaswell]

Add warning of unexpected behavior when using get_window_extent to get the size of rendered artists in screen-units. See #2831 .

[pelson]

I'm not sure I agree with this. Adding the warning will not give us anything new, other than an annoying warning. A known bug doesn't necessarily have to emit a warning as far as I'm concerned...

[efiring]

@pelson, I think @tacaswell is suggesting a warning somewhere in the documentation, not a warning to be emitted by the code.

[tacaswell]

Yes, I mean to put a note in the documentation, not to emit a warning.
On May 20, 2014 2:04 PM, "Eric Firing" notifications@github.com wrote:

@pelson https://github.com/pelson, I think @tacaswellhttps://github.com/tacaswellis suggesting a warning somewhere in the documentation, not a
warning to be emitted by the code.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/3055#issuecomment-43661948
.

[tacaswell]

Also, this issue my be unneeded if the patch from @leejjoon in PR #3054 cleans up all of these issues.

It is easier to do-in an extra issue than remember one that does not exist 😉

[pelson]

Ah. Thanks @tacaswell & @efiring - got the wrong end of the stick. 👍 after all 😉