In `*ielm*`:
```
ELISP> `(emacs-version \, emacs-version)
(emacs-version . "28.2")
```
________________
In `custom-file`:
```
(custom-set-variables
'(var `(a . ,b)))
```
Then change some options by GUI menu, and click `Save Options`:
```
(custom-set-variables
'(var `(a \, b))
'(changed-option new-value))
```
________________
Is it a feature or bug?