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RE: defcustom for ^L display?
From: |
Drew Adams |
Subject: |
RE: defcustom for ^L display? |
Date: |
Sun, 1 Jul 2007 08:31:26 -0700 |
Resending, since the release is now out.
> From: Drew Adams Sent: Tuesday, December 12, 2006 1:13 PM
> For possible consideration after the release - Let users
> customize how they want ^L to appear in buffers.
A library with a minor mode implementing such a feature is here:
http://www.emacswiki.org/cgi-bin/wiki/pp-c-l.el. Description:
http://www.emacswiki.org/cgi-bin/wiki/PrettyControlL.
> Here is one approach, to give an idea:
>
> (defcustom ^L-appearance-vector
> (vconcat (make-vector 10 ?_) " Section (Printable Page) "
> (make-vector 10 ?_))
> "Vector determining how a Control-l character is displayed.
> Either a vector of characters or nil. The characters are displayed in
> place of the Control-l character. nil means `^L' is displayed.
>
> Some possible values (evaluate the Lisp expressions first):
> nil: ^L
> (make-vector 50 ?_): Horizontal line
> (vconcat (make-vector 10 ?_)
> \" Section (Printable Page) \" (make-vector 10 ?_)): WYSIWYG"
>
> :initialize 'custom-initialize-changed'
> :set (lambda (symb val)
> (set-default symb val)
> (aset standard-display-table ?\014 ^L-appearance-vector))
> :type '(choice
> (const :tag "^L" nil)
> (restricted-sexp :match-alternatives (vectorp)
> :tag "Vector of characters to display"))
> :group 'convenience :group 'wp)
>
> (aset standard-display-table ?\014 ^L-appearance-vector)
>
> Some people might prefer nil as the default value, but if newbies
> are the target for the uncustomized value, then a default value
> something like that shown here might be better.
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