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bug#4102: 23.1.50; recentf-mode nil but toggles

From: Stefan Monnier
Subject: bug#4102: 23.1.50; recentf-mode nil but toggles
Date: Thu, 13 Aug 2009 13:36:32 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux)

> Do not use `supercalifragilisticexpialidocious' either.
> How about: Use nil to toggle the mode on or off.

Actually, the docstring already says that nil toggles.  If you remember
that the docstring is written here to describe the command rather than
the function, then you'll immediately conclude that

  With prefix argument arg, turn on if positive, otherwise off.

only applies when there's a prefix argument, so when there isn't, arg is
necessarily nil and the normal behavior (described on the previous line:

   Toggle recentf mode.

) applies.


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