Implement -Qs for rpm (yum & dnf)

[sionleroux]

Based on the Pacman Rosetta Stone https://wiki.archlinux.org/index.php/Pacman/Rosetta

To mimic pacman's behaviour, this pads the search string with asterisks so that rpm will return more than just whole-word matches.
Tested on Centos 6 and works as expected.

I also ticked the Yum/Qs field with y in the README.
Just let me know if there's anything I missed.

[NgoHuy]

I just test with fedora 23, it worked. And I see this feature is available for dnf too, can you add for dnf with new commit :) ?

[sionleroux]

Interesting. To be honest I think this is just a naming issue and it's odd because in fact neither yum nor dnf seem to provide the functionality of pacman -Qs, instead for both of them this task is left up to rpm. Anyway, I will copy-and-paste this for dnf.

[icy]

Thanks for your contribution, @sinisterstuf . I will take a look at this at the weekend.

Thank you @NgoHuy , too.

[icy]

FIXME: the use of "*$@*" is quite strange. This may prevent users from providing more options. But let's see this a featured-bug ;)

[sionleroux]

That's a valid point, $@ was copied from the existing commands, but in reality we want '*search-term*' where search-term is a single WORD (package names do not contain more than one WORD as far as I know). Perhaps search-term could even be the last item from $@? Or perhaps that's complicated.

Either way, what options (not provided by pacapt) would the user provide? Yum-specific options? In this case they should probably use yum. This is not yet a use case for me, but I suppose it's worth revisiting when somebody needs to be able to provide more options.

EDIT: thanks for the merge! 😄