Elisp: How to set multiple text properties.

Elisp: How to set multiple text properties.

[Neil Baylis]

I want to make a pair of elisp functions that can be called
interactively, and possibly bound to function keys.

Call them foo and bar.

When foo is called, it should cause subsequent text entered into the
buffer to be colored dark blue and bold.

When bar is called, it should cause subsequent text entered into the
buffer to be colored green, and italic.

I've only been able to find out how to set a single property of the
region. E.g., if I set it to be italic, then it stops being green. I'm
using (facemenu-set-italic) to set italic mode. I'm using (facemenu-
set-face-from-menu) to set the color.

I think I'm missing something obvious. What's the correct way to set
multiple properties on text from within an elisp function?

Re: Elisp: How to set multiple text properties.

[Stefan Monnier]

> I think I'm missing something obvious. What's the correct way to set
> multiple properties on text from within an elisp function?

The `face' text-property can be a list of faces rather than
a single face.


        Stefan

Re: Elisp: How to set multiple text properties.

[Neil Baylis]

On Jan 14, 2:49 pm, Stefan Monnier <monn...@iro.umontreal.ca> wrote:
> > I think I'm missing something obvious. What's the correct way to set
> > multiple properties on text from within an elisp function?
>
> The `face' text-property can be a list of faces rather than
> a single face.
>
>         Stefan

OK, cool. That lets me specify bold and italic at the same time. Is
there a way to use the 'face property to specify colors?

Neil

Re: Elisp: How to set multiple text properties.

[Neil Baylis]

Thanks, Stefan. I seem to have it figured out now.

For those interested, here are some calls that work (Emacs 23.2.1):

(These calls set properties on the entire line containing point.)

Set the text to italic only:
   (put-text-property (line-beginning-position) (line-end-position)
'face 'italic)

Set the text to blue only:
   (put-text-property (line-beginning-position) (line-end-position)
'face '(:foreground "blue"))

Set the text to blue and bold:
   (put-text-property (line-beginning-position) (line-end-position)
'face '((:foreground "blue") bold))

Set the text to blue and italic:
   (put-text-property (line-beginning-position) (line-end-position)
'face '((:foreground "blue") italic))

Set the text to bold, italic, and red:
   (put-text-property (line-beginning-position) (line-end-position)
'face '(bold italic (:foreground "red")))

Neil

Re: Elisp: How to set multiple text properties.

[Mirko]

On Saturday, January 15, 2011 1:53:52 PM UTC-5, Neil Baylis wrote:
> Thanks, Stefan. I seem to have it figured out now.
> 
> For those interested, here are some calls that work (Emacs 23.2.1):
> 
> (These calls set properties on the entire line containing point.)
> 
> Set the text to italic only:
>    (put-text-property (line-beginning-position) (line-end-position)
> 'face 'italic)
> 
> Set the text to blue only:
>    (put-text-property (line-beginning-position) (line-end-position)
> 'face '(:foreground "blue"))
> 
> Set the text to blue and bold:
>    (put-text-property (line-beginning-position) (line-end-position)
> 'face '((:foreground "blue") bold))
> 
> Set the text to blue and italic:
>    (put-text-property (line-beginning-position) (line-end-position)
> 'face '((:foreground "blue") italic))
> 
> Set the text to bold, italic, and red:
>    (put-text-property (line-beginning-position) (line-end-position)
> 'face '(bold italic (:foreground "red")))
> 
> Neil

Thank you for the examples

Mirko