[issue3431] copy detection for add and addremove

[gidyn]

New submission from gidyn <gideon at accursoft.com>:

Expand addremove's -s option to detect copies, or add a new option (as this
would presumably be a lot slower than just detecting renames). Copy
detection also applies to add.

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messages: 19941
nosy: gidyn
priority: feature
status: unread
title: copy detection for add and addremove

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