Re: Adding hypertlink buttons

[Davin Pearson <davin.pearson@gmail.com>]

On Tuesday, October 30, 2018 at 6:44:31 PM UTC+13, Yuri Khan wrote:
> On Tue, Oct 30, 2018 at 10:40 AM Davin Pearson  wrote:
> 
> > When I execute the following command
> >
> > (display-splash-screen nil)
> >
> > It comes up with a screen of hyperlinks.  By default Emacs
> > shows the splash screen with an extra image and a hyperlink button
> > that takes your Web browser to gnu.org, although I have turned
> > this feature off and I cannot remember what command to use to
> > re-enable a fancy splash screen.
> >
> > It seems that font lock should be used to add a hyperlink to
> > your Elisp code.
> 
> Since you know what function does what you want, and you approximately
> know the thing to look for, what is stopping you from reading the code
> of that function looking for that thing?
> 
> Specifically, the buffer text of the startup screen is built by
> function ‘fancy-splash-insert’ in startup.el, from data in variable
> ‘fancy-startup-text’ in the same file.
> 
> What it’s doing is invoke ‘insert-button’, with the property 'face
> specifying 'link (in addition to the current face), 'help-echo setting
> a description string displayed in the echo area when point is within
> the button, 'follow-link to make it clickable with the mouse, and
> 'action specifying a lambda function that invokes ‘browse-url’ with
> the appropriate link address. You could create a button with its
> 'action set to a function that does something else, such as visiting a
> specific file and moving point to a specific position.

How do I go about setting properties in PLists?  Can you give an example?

How do I create a plist?