clfilter doubles time of hg log?

[Thomas Arendsen Hein]

* Yuya Nishihara <yuya at tcha.org> [20130118 16:27]:
> Is this a trade-off of "hidden" changeset filtering?

Yes, a bisect shows this as the mayor slowdown:

The first bad revision is:
changeset:   18267:5bb610f87d1d
user:        Pierre-Yves David <pierre-yves.david at logilab.fr>
date:        Tue Jan 08 20:37:37 2013 +0100
summary:     clfilter: enforce hidden changeset globally

What's interesting here is that the option --hidden for hg log
worked fast, only the global --hidden causes this slowdown.

Regards,
Thomas

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