Re: Side effects in `tooltip-show'

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Mon, 17 Jan 2022 21:00:46 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > How about using 'equal' to compare the strings instead?  What are the
> > chances that two help-echo strings of 2 different tooltips will
> > compare equal without the properties, but not with the properties?
> 
> That's fine by me as well, but the resulting minor snafu where the
> tooltip might not be updated if the string contents are identical should
> be documented somewhere, I think.

In the comments to the code that makes  these comparisons, I think.