[PATCH] Do not clear the prev, curr and exp fields of packagemeta. Never.

[Jon Turney]

On 04/05/2016 13:38, Houder wrote:
> Please, submit this patch.

Thanks for the patch.

> This patch rectifies
>
>  - packagemeta::ScanDownloadedFiles (package_meta.cc), and
>  - packagemeta::trustp (package_meta.h)
>
> Clarification:
> Class packagemeta has "fields" prev, curr, exp and installed, which in fact
> represent the info from setup.ini/installed.db, and should never be cleared
> therefore. _Currently_ these fields are cleared in ScanDownloadedFiles() in
> order to notify that the tarball for the associated field is not available.
> This is a mistake, as it destroys relevant info (e.g. the version number of
> a version).
> To ascertain whether or not the associated tarball is available, one should
> invoke <field>.accesible().

Can you clarify a bit about the problem that this patch solves?  And how 
you tested that it fixes it?