<p dir="ltr">I don't think bash completion files should be marked as %config even if they are in /etc but the fact is that they are not configurable files IMO.</p>
<p dir="ltr">But recently in the herbstuluftwm review of mine the reviewer said that it's better to put bash completion files underneath datadir:</p>
<p dir="ltr">/usr/share/bash-completion/completions</p>