Public bug reported:

Binary package hint: emacs22

Customizations involving whitespace.el interact poorly so that important
customizations are lost.

WHAT I DID

Starting with an empty '.emacs' file, I made the following customization
through `M-x customize`

Indent Tabs Mode --> off
Whitespace Global Mode --> on

I attach the file `naive.emacs` containing the .emacs config.

WHAT I EXPECTED

On opening a whitespace-clean and tab-free file, I expect to see no
whitespace errors.  This is because, the value of whitespace-check-
indent-whitespace defaults to the value of indent-tabs-mode for obvious
reasons.

WHAT HAPPENS

I get whitespace errors relating to the tab-free indent whitespace.

WORKAROUND

Taking the Whitespace Global Mode customization out and explicitly
issuing the command solves the problem, indicating that it is a bug with
how whitespace.el processes the customization.  Namely, append the
following to .emacs

;; Workaround for customization bug
(whitespace-global-mode 't)

** Affects: emacs22 (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Whitespace customization ignored
https://bugs.launchpad.net/bugs/221733
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