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@@ -643,7 +643,7 b' def gathersupportedrequirements(ui):' | |||
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643 | 643 | # Add derived requirements from registered compression engines. |
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644 | 644 | for name in util.compengines: |
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645 | 645 | engine = util.compengines[name] |
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646 | if engine.revlogheader(): | |
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646 | if engine.available() and engine.revlogheader(): | |
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647 | 647 | supported.add(b'exp-compression-%s' % name) |
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648 | 648 | |
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649 | 649 | return supported |
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