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From: Dan Katz <dkatz@profitlogic.com>
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Subject: Re: Showing whitespace
Date: Wed, 14 May 2003 14:27:15 -0400
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On Wed, 14 May 2003, Björn Lindström wrote:

> I wonder how I get Emacs to show certain whitespace characters as
> other characters in some distinct colour. Specifically, I would like
> to make tabs and any whitespace at the end of a line visible.

For end-of-line whitespace you might look at the variable
'show-trailing-whitespace'.

A more general facility which I use occasionally to examine tabs
and spaces in interior positions in the text is blank-mode.el
(http://www.cpqd.com.br/~vinicius/emacs/Emacs.html).

Dan