copies: add an explicit test using multiple roots We explicitly add a test checking for copies of connected revision but involving a different roots. This make sure the copies coming purely from the new roots does not interfere with the merge. Differential Revision: https://phab.mercurial-scm.org/D7075

# See http://EditorConfig.org for the specification

root = true

[*.py]
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indent_style = space
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[*.{c,h}]
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[*.t]
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