Ihor Radchenko <yantar92@posteo.net> writes:

> Olivier Lischer <olivier.lischer@liolin.ch> writes:
>
>>> Thanks for the patch, but may you please explain why introducing such
>>> variable is useful?
>>
>> Sure.
>>
>> I configure all my .dotfiles in an Org mode file and tangle the
>> configuration in the right places. The tangled files are all
>> read-only to prevent accidentally editing of the "right" configuration
>> file. With the current tangling mechanism, this results in a "Permission
>> denied" error because the function writes to a read-only file. In a
>> earlier version this use case was possible because the file was
>> recreated before writing to it.
>
> Thanks for the explanation!
>
> I suggest changing your patch, setting the default value of
> `org-babel-tangle-remove-file-before-write' to 'auto.
> This will keep the current behaviour but fall back to delete + write new
> file when the tangle target is read-only.
> That will avoid feature regression.

I changed the path as you proposed.