🐛 skip set if no mail selected

[NCenerar]

Summary

If no mail are selected by the strategy (with regexp for example), it could lead to message loss because it means all will be discarded.
I think that the desired behavior is to skip the set like when all mail are selected.

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• I have referenced above all issues related to the changes I'm bringing
• I have checked there is no other Pull Requests covering the same thing I'm about to address

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[codecov]

Codecov Report

Merging #286 (fe2d9de) into develop (23a588a) will increase coverage by 0.15%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #286      +/-   ##
===========================================
+ Coverage    77.79%   77.94%   +0.15%     
===========================================
  Files            8        8              
  Lines          725      730       +5     
  Branches       117      118       +1     
===========================================
+ Hits           564      569       +5     
  Misses         126      126              
  Partials        35       35              

Impacted Files	Coverage Δ
mail_deduplicate/deduplicate.py	75.39% <100.00%> (+0.66%)	⬆️

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[kdeldycke]

I'm pretty sure this solves #203 right? If so then this PR seems better than #204 as it does not introduce any extra option.

@NCenerar, can you please look at #204 and double check if my speculations are right? I'm ready to merge it right away if it is the case! 🙂

[NCenerar]

Well, it is not really clear what he tries to accomplish.
I think this might provide a good solution for him but in fact, I think the discard actions will be more appropriate ;)

[kdeldycke]

Good point. Thanks @NCenerar again, and let's merge this! :)

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.