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bug#6644: `describe-variable' misses on certain permanent-locals [PATCH]

From: Chong Yidong
Subject: bug#6644: `describe-variable' misses on certain permanent-locals [PATCH] (putative)
Date: Sun, 05 Aug 2012 16:42:31 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1.50 (gnu/linux)

MON KEY <address@hidden> writes:

> As currently written `describe-variable' will, for certain variables,
> only inform if a variable is permanently local when it is set to have
> a local value in current-buffer.
> This happens for example with `kill-buffer-hook' which _is_ a
> permanent-local. And in thes situations, `describe-variable' (and by
> proxy "*Help*") can not tell us if a variable is permanent-local
> unless the docstring explicitly states as such.

Thanks.  I committed a slightly different fix than what you suggested.

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