There's no dlocate completion shipped with bash-completion at least upstream, so chances are this issue should be assigned to another package.
- Bug#867735: dlocate completions 積丹尼 Dan Jacobson
- Bug#867735: [Bash-completion-devel] Bug#867735... Ville Skyttä
- Bug#867735: [Bash-completion-devel] Bug#867735... 積丹尼 Dan Jacobson