Get a list with edit-and-eval-command

Get a list with edit-and-eval-command

[david.chappaz]

Hi all,

I'm trying to get an elisp object (more specifically a list) from the minibuffer, using the function edit-and-eval-command, as documented in
http://www.gnu.org/software/emacs/manual/html_mono/elisp.html#Object-from-Minibuffer

For example say I first evaluate:
(setq wildcard '("*.c" "*.h" "*.v"))

Next I am trying to do something like:
(setq newwildcard (edit-and-eval-command  "Enter an expression: " (format "%s" wildcard))

but it does not achieves what I really want, which is to provide as initial argument a valid lisp list [e.g. '("*.c" "*.h" "*.v")] so no error is generated if the user simply hits [Enter]. The above generates double quotes and misses the single quote, which causes the problem.

Can anyone give me some insight to do this properly ?

Many thanks,
David.

Re: Get a list with edit-and-eval-command

[Kevin Rodgers]

On 2/12/12 9:25 AM, david.chappaz@free.fr wrote:
> Hi all,
>
> I'm trying to get an elisp object (more specifically a list) from the minibuffer, using the function edit-and-eval-command, as documented in
> http://www.gnu.org/software/emacs/manual/html_mono/elisp.html#Object-from-Minibuffer
>
> For example say I first evaluate:
> (setq wildcard '("*.c" "*.h" "*.v"))
>
> Next I am trying to do something like:
> (setq newwildcard (edit-and-eval-command  "Enter an expression: " (format "%s" wildcard))
>
> but it does not achieves what I really want, which is to provide as initial argument a valid lisp list [e.g. '("*.c" "*.h" "*.v")] so no error is generated if the user simply hits [Enter]. The above generates double quotes and misses the single quote, which causes the problem.
>
> Can anyone give me some insight to do this properly ?

Do not pass a string as the COMMAND argument to edit-and-eval-command.

(edit-and-eval-command "Edit and eval: " '(quote ("*.c" "*.h" "*.v")))

or equivalently

(edit-and-eval-command "Edit and eval: " (quote '("*.c" "*.h" "*.v")))

-- 
Kevin Rodgers
Denver, Colorado, USA