bug#25578: [PATCH] Prompt default extension in dired-mark-extension

[Tino Calancha]

Juri Linkov <juri@linkov.net> writes:

>> I want 'M-x dired-mark-extension' (from dired-x) in Dired to use the
>> extension of the file at point as default extension, when it is
>> possible. Because, in this way, I usually no longer need to type the
>> extension manually, which saves some time for me–someone can't type
>> English words quickly and accurately.
>
> Thanks, I think your patch is a useful addition.
I agree, it's a good default value.
>
> Also I'm using a similar feature for another Dired command
> ‘dired-mark-files-regexp’ that could provide similar defaults
> based on the current file and its extension:
That's also fine.