[pbs-devel] [PATCH proxmox-backup] fix #3613: catalog_shell: include matched dir's contents on restore

[Wolfgang Bumiller]

On Wed, Apr 06, 2022 at 11:15:28AM +0200, Dylan Whyte wrote:
> On 4/6/22 10:26, Dietmar Maurer wrote:
> > > On 04/04/2022 6:19 PM Dylan Whyte<d.whyte at proxmox.com>  wrote:
> > > 
> > > Prior to this, during an interactive restore, if a directory was matched
> > > via a pattern match or selection, only the empty directory would be
> > > restored, and not its contents.
> > Why not simply use "**" if you want to restore a whole tree?
> 
> I had originally thought about this, but there are some good reasons for the
> patch:
> 
>  * I believe there is an expectation when selecting a directory for
>    restore, that you would like for the entire directory to be restored
>    (unless any sub-directory is explicitly excluded).
>  * The 'select' command doesn't do pattern matching, so it wouldn't be
>    able to use '**' to restore the directory. This point doesn't apply
>    to 'find' and 'restore --pattern'.

Fair points.
I don't have particularly hard feelings about this behavior other than
that it's a change people who're already used to it might not expect.

>  * With the current implementation, '**' won't restore empty
>    sub-directories of a matched directory, in spite of the fact that
>    they appear in the match list.

That sounds like a bug.

Now, with your patch getting rid of the `matches_stack` to keep track
of whether or not we're currently extracting, have you tested nested
alternating include-excludes?

include a/
exclude a/b
include a/b/c

where upon leaving from 'c' to 'b' we need to be back in 'exclude' mode
and when leaving from 'b' to 'a' we need to be back in 'include' mode?