>>> "TV" == Thibaut Verron <thibaut.verron@gmail.com> writes:

> Le mar. 13 oct. 2020 à 11:10, Andreas Schwab <schwab@linux-m68k.org> a écrit :
>> 
>> On Okt 13 2020, Uwe Brauer wrote:
>> 
>> > But there is, as far as I know, no inverse functionality
>> >
>> > (remove-from-list 'org-export-filter-src-block-functions
>> >          'my-html-filter-src-blocks)
>> >
>> > Does not exist. Wouldn't that be useful?
>> 
>> Doesn't remove do what you need?

> Note that the syntax is slightly different: the element comes second,
> and the list is unquoted.

Do you mean 

(setq org-export-filter-src-block-functions (remove 'my-html-filter-src-blocks org-export-filter-src-block-functions))

While:

(add-to-list 'org-export-filter-src-block-functions
         'my-html-filter-src-blocks)


I think 

(remove-from-list 'org-export-filter-src-block-functions
         'my-html-filter-src-blocks)

Would be easier to recall.