Re: [External] : Saving variables for use between emacs sessions

[uzibalqa]

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------- Original Message -------
On Thursday, September 15th, 2022 at 1:26 PM, Marcin Borkowski <mbork@mbork.pl> 
wrote:


> On 2022-09-15, at 14:49, Robert Pluim rpluim@gmail.com wrote:
> 
> > > > > > > On Thu, 15 Sep 2022 11:46:57 +0000, Drew Adams 
> > > > > > > drew.adams@oracle.com said:
> > 
> > >> How can I save variable that can be reused between emacs sessions?
> > Drew> Lots of ways. Some:
> > 
> > Drew> 1. savehist.el
> > Drew> 2. desktop.el
> > Drew> 3. Bookmark+ bookmark variable-list bookmark
> > 
> > Drew> 
> > https://www.emacswiki.org/emacs/BookmarkPlus#FunctionSequenceVarlistBookmarks
> > 
> > Drew> 4. If it's a user option (defcustom), then in your `custom-file' (or 
> > init file).
> > 
> > And in emacs-29, `define-multisession-variable', although thatʼs
> > intended more for packages than user config.
> 
> 
> Also, the `persist' package.

Right, I want to have a user option, but although I want to allow a user to set 
the value,
I also would like to set a value in an automatic way, using a function that 
does the 
necessary calculations, and stares the answer in the variable.

How does one let a user change a value, and how can I save it automatically as 
well?