Diff between customized value

Diff between customized value

[Daniel Fleischer]

Hi,

How do I compare a customized variable value with its original value?
When I `describe-variable' I get "value" and "original value", sometimes
it's hard to see the difference. Is there a quick way to diff them?


-- 
Daniel Fleischer

Re: Diff between customized value

[Ruijie Yu via Users list for the GNU Emacs text editor]

On May 20, 2023, at 20:36, Daniel Fleischer <danflscr@gmail.com> wrote:
> 
> Hi,
> 
> How do I compare a customized variable value with its original value?
> When I `describe-variable' I get "value" and "original value", sometimes
> it's hard to see the difference. Is there a quick way to diff them?
> 
> 
> -- 
> Daniel Fleischer
> 
> 

I think you are looking for “sexp diff”.  I recall seeing one on [search engine], but it wasn’t feature complete.  Maybe you will have better luck this time. 

For completeness, here’s how you access the standard value programmatically:

    (customize--standard-value 'var-name)

Or take a look at the implementation of this function: it’s just `eval'’ing the sexp of one of the symbol’s properties. 

--
Best,


RY

Re: Diff between customized value

[Marcin Borkowski]

On 2023-05-20, at 14:55, Ruijie Yu via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> wrote:

> On May 20, 2023, at 20:36, Daniel Fleischer <danflscr@gmail.com> wrote:
>> 
>> Hi,
>> 
>> How do I compare a customized variable value with its original value?
>> When I `describe-variable' I get "value" and "original value", sometimes
>> it's hard to see the difference. Is there a quick way to diff them?
>> 
>> 
>> -- 
>> Daniel Fleischer
>> 
>> 
>
> I think you are looking for “sexp diff”.  I recall seeing one on [search engine], but it wasn’t feature complete.  Maybe you will have better luck this time. 

Difftastic (https://difftastic.wilfred.me.uk/) might be useful.

Hth,

-- 
Marcin Borkowski
http://mbork.pl