bug#64735: 29.0.92; find invocations are ~15x slower because of ignores

[Ihor Radchenko]

Michael Albinus <michael.albinus@gmx.de> writes:

>> So, it is doable, and not difficult. Good to know.
>
> Technically it isn't difficult. But don't forget:
>
> - We support already ~80 primitive operations.
>
> - A new primitive operation must be handled by all Tramp backends, which
>   could require up to 10 different implementations.

Why so? `directory-files-recursively' is already supported by Tramp via
`directory-files'. But at least for some backends
`directory-files-recursively' may be implemented more efficiently. If
other backends do not implement it, `directory-files' will be used.

> - I'm the only Tramp maintainer, for decades.

I hope that the above approach with only some backends implementing such
support will not add too much of maintenance burden.

-- 
Ihor Radchenko // yantar92,
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