Subject: Re: bug#64759: Broken faces

From: Juri Linkov <[email-masked]>
Date: Fri, 21 Jul 2023 21:49:13 +0300

>> Let's see: when the definition is
>>
>>   (defface display-time-date-and-time
>>     nil
>>     "Face for `display-time-format'."
>>     :group 'mode-line-faces
>>     :version "30.1")
>>
>> then the customization buffer is
>>
>>   Hide display-time-date-and-time face: [sample]
>>       State : NO CUSTOMIZATION DATA; not intended to be customized.
>>      Face for ‘display-time-format’.
>>      -- Empty face --
>>      Show All Attributes
>>
>> But when the definition is
>>
>>   (defface display-time-date-and-time
>>     '((t nil))
>>     "Face for `display-time-format'."
>>     :group 'mode-line-faces
>>     :version "30.1")
>>
>> the customization buffer is
>>
>>   Hide display-time-date-and-time face: [sample]
>>       State : STANDARD.
>>      Face for ‘display-time-format’.
>>      -- Empty face --
>>      Show All Attributes
>>
>> Looks nice.  No strange error message about not intended to be customized.
>
> That's not what I asked.  I asked about the face attributes.
>
> IOW, isn't
>
>   (defface display-time-date-and-time
>     '((t nil))
>     "Face for `display-time-format'."
>     :group 'mode-line-faces
>     :version "30.1")
>
> the same as
>
>   (defface display-time-date-and-time
>     '((t (:inherit default)))
>     "Face for `display-time-format'."
>     :group 'mode-line-faces
>     :version "30.1")
>
> ?

No, it's not the same.  The latter uses a white background on the mode line.