From: Eric Wong <e@yhbt.net>
Date: Wed, 6 May 2020 10:40:53 +0000 (+0000)
Subject: viewdiff: assume diffstat and diff order are identical
X-Git-Tag: v1.5.0~25
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=65b37aeb8392a62e9aa8ceac08227c77c6fa6b8b;hp=65b37aeb8392a62e9aa8ceac08227c77c6fa6b8b;p=public-inbox.git

viewdiff: assume diffstat and diff order are identical

For non-malicious messages, we can assume the diffstat and actual
diff appear in the same order.  Thus we can store {-long_paths} as
an arrayref and only compare the first element when we encounter
a truncated path.

This should make HTML rendering stable when there's basename
conflicts in message such as
https://lore.kernel.org/backports/1393202754-12919-13-git-send-email-hauke@hauke-m.de/

This diffstat anchor linkification can still be defeated by
users who make actual path names beginning with "...", but we
won't waste CPU cycles on it, either.
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