Re: Execute a string as a command

[Joost Kremers <joost.m.kremers@gmail.com>]

Tim Johnson wrote:
> Here is an example of what could be a working function 'interning'
> a string :
> (defun tj-toggle-funcs ()
>   "Toggle functions"
>   (interactive)
>   (let ((menu
> 	 '("" ("" ("Transient Mark Mode" . "transient-mark-mode"))
> 	       ("Truncate Lines" . "toggle-truncate-lines")
> 	       ("Show Tabs" .  "toggle-tabs-font-lock"))))
> 	(choice ))
>     (setq choice (tmm-prompt menu))
>     (if choice
> 	(call-interactively (intern choice)))))
>
> My preference *would* be that a command object be read from the
> 'menu structure, but wasn't able to make it work.	
> So my next step is to figure out how to place a command object as a
> value instead of a string... and then evaluate it properly.

Check out the Elisp manual on pop-up menus, which use the function
x-popup-menu, which takes the same kind of menu structure as tmm-prompt.

C-h i Elisp RET Pop-up menus RET

An alternative to what you're trying to do would be to use the hydra
package:

https://github.com/abo-abo/hydra

Here is my toggle hydra, for example:

```
(defhydra jk-hydra-toggle (:color blue)
  "Change"
  ("d" toggle-debug-on-error "Debug")
  ("w" writeroom-mode "Writeroom")
  ("i" ispell-change-dictionary "Change Ispell Dictionary")
  ("f" toggle-fill-unfill "Fill")
  ("F" follow-mode "Follow mode")
  ("t" orgtbl-mode "OrgTbl mode")
  ("y" typo-mode "Typo mode")
  ("q" nil "Cancel"))
(bind-key "s-r" #'jk-hydra-toggle/body)
```

Yeah, ok, so `ispell-change-dictionary` is not a toggle... But you get the
idea. ;-)

HTH


-- 
Joost Kremers                                   joostkremers@fastmail.fm
Selbst in die Unterwelt dringt durch Spalten Licht
EN:SiS(9)