purge: also deal with directory with --confirm
Getting the exact number is simple (you have to project the result of previous
deletion to detect super-directory with only about-to-be-deleted content). So we
use a vaguer message.
Differential Revision: https://phab.mercurial-scm.org/D9819
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IncludeCategories:
- Regex: '^<'
Priority: 1
- Regex: '^"'
Priority: 2