linux-kernel - get_maintainer.pl: unexpected behaviour for path/to//file

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Date:   Fri, 15 May 2020 11:52:03 +0100
From:   Emil Velikov <emil.l.velikov@...il.com>
To:     Joe Perches <joe@...ches.com>
Cc:     linux-kernel@...r.kernel.org
Subject: get_maintainer.pl: unexpected behaviour for path/to//file

Hi Joe,

Recently I've noticed that get_maintainer behaves differently if there
is a double, sequential, forward slash in the path.

AFAICT there should be no distinction between the two. Or at least many
existing applications and scripts consider them one and the same.

I've tried fixing this, although my perl isn't quite up-to scratch.
Is this some weird bug or some intended feature?

Thanks
Emil

Example:

./scripts/get_maintainer -F drivers/gpu/drm//lima

David Airlie <airlied@...ux.ie> (maintainer:DRM DRIVERS)
Daniel Vetter <daniel@...ll.ch> (maintainer:DRM DRIVERS,commit_signer:3/42=7%)
Qiang Yu <yuq825@...il.com> (commit_signer:36/42=86%,authored:24/42=57%)
Vasily Khoruzhick <anarsoul@...il.com> (commit_signer:26/42=62%)
Krzysztof Kozlowski <krzk@...nel.org> (commit_signer:5/42=12%,authored:5/42=12%)
Emil Velikov <emil.velikov@...labora.com> (commit_signer:4/42=10%)
dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS)
linux-kernel@...r.kernel.org (open list)

./scripts/get_maintainer -F drivers/gpu/drm/lima

Qiang Yu <yuq825@...il.com> (maintainer:DRM DRIVERS FOR LIMA)
David Airlie <airlied@...ux.ie> (maintainer:DRM DRIVERS)
Daniel Vetter <daniel@...ll.ch> (maintainer:DRM DRIVERS)
dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS FOR LIMA)
lima@...ts.freedesktop.org (moderated list:DRM DRIVERS FOR LIMA)
linux-kernel@...r.kernel.org (open list)