how to add font-lock keywords

how to add font-lock keywords

[Le Wang]

Hi all,

I wasn't able to google a clear examples of how to do this.  For
example, I'd like to highlight all text between double-quotes.

-- 
Le

Re: how to add font-lock keywords

[John Wiegley]

>>>>> Le Wang <l26wang@gmail.com> writes:

> I wasn't able to google a clear examples of how to do this.  For example,
> I'd like to highlight all text between double-quotes.

Typically it looks something like this:

  (font-lock-add-keywords org-mode
                          (list (list (concat "\\(\"[^\"]+\"\\)")
                                      1 highlight-face t)))

Where `highlight-face' is the face you'd like to use.  The regexp doesn't
handle cases where \" legitimately occurs in a string, either.  The part
between the \\(\\) is what gets colorized.

John

Re: how to add font-lock keywords

[John Wiegley]

>>>>> John Wiegley <jwiegley@gmail.com> writes:

>>>>> Le Wang <l26wang@gmail.com> writes:
>> I wasn't able to google a clear examples of how to do this.  For example,
>> I'd like to highlight all text between double-quotes.

> Typically it looks something like this:

>   (font-lock-add-keywords org-mode
[...]

Sorry, that should be 'org-mode, to name the symbol, not attempt to use its
value.

John

Re: how to add font-lock keywords

[Le Wang]

Thanks for the hint, I tried this, but all my beautiful salad bowl
colours went away.

(font-lock-add-keywords 'org-mode '(("\"\\(\\(?:.\\|\n\\)*?[^\\]\\)\""
0 font-lock-string-face)))

Notice that I made a bad attempt to handle escaped quotation mark in
the string.  Does anyone know a better solution to handle escaped
characters in font-lock?

On Wed, Aug 24, 2011 at 9:17 AM, John Wiegley <jwiegley@gmail.com> wrote:
>>>>>> John Wiegley <jwiegley@gmail.com> writes:
>
>>>>>> Le Wang <l26wang@gmail.com> writes:
>>> I wasn't able to google a clear examples of how to do this.  For example,
>>> I'd like to highlight all text between double-quotes.
>
>> Typically it looks something like this:
>
>>   (font-lock-add-keywords org-mode
> [...]
>
> Sorry, that should be 'org-mode, to name the symbol, not attempt to use its
> value.
>
> John
>
>
>



-- 
Le

How to add font-lock keywords

[Daniel Fleischer]

Hi, I want to add custom keywords to be highlighted. I used

    (font-lock-add-keywords nil '(("books" . org-level-4)) t)


but nothing happens after I restart orgmode or call 'font-lock-update'.

-- 

Daniel Fleischer

Re: How to add font-lock keywords

[Bruno Barbier]

Hi,

Daniel Fleischer <danflscr@gmail.com> writes:

> Hi, I want to add custom keywords to be highlighted. I used
>     (font-lock-add-keywords nil '(("books" . org-level-4)) t)
>
> but nothing happens after I restart orgmode or call 'font-lock-update'.

The following works for me, in an org mode buffer:

,----
| (font-lock-add-keywords nil '(("books" . 'org-level-4)) t)
`----

(I added a quote before the face name).

No need to call font-lock-update or restart: any new or modified text
gets the new fontification.

Bruno

> -- 
> Daniel Fleischer

Re: How to add font-lock keywords

[Daniel Fleischer]

Bruno Barbier [2021-12-21 Tue 20:35] wrote:

> The following works for me, in an org mode buffer:
>
> ,----
> | (font-lock-add-keywords nil '(("books" . 'org-level-4)) t)
> `----

> No need to call font-lock-update or restart: any new or modified text
> gets the new fontification.

Thanks, it works with the quote.

-- 

Daniel Fleischer