Subject: bug#33043: [PATCH v1 1/1] Support for the truncation of displayed URLs

From: David Edmondson <[email-masked]>
Date: Thu, 18 Oct 2018 11:50:22 +0100

On Thursday, 2018-10-18 at 11:38:04 +0100, Basil L. Contovounesios wrote:

> David Edmondson <[email-masked]> writes:
>
>> On Wednesday, 2018-10-17 at 23:27:45 +01, Basil L. Contovounesios wrote:
>>
>>> Couldn't we reuse url-truncate-url-for-viewing, which tries to be smart
>>> about where it places the ellipsis, for this?  I think the existing code
>>> can also be cleaned up a little:
>>
>> I didn't know about url-truncate-url-for-viewing, no other reason.
>>
>> I'd be happy with your change, but note that it will always truncate
>> URLs that are wider than the current frame - there is no way to have no
>> truncation take place.
>>
>> If a user is most familiar with something like ffap to open URLs then
>> this is unfortunate - ffap doesn't see the full URL in the buffer.
>
> Sorry, that was an oversight.  Here's how the last patch can be patched
> to support the default of no truncation:

Either of your versions looks fine to me, thanks for looking into it.

> diff --git a/lisp/net/rcirc.el b/lisp/net/rcirc.el
> index de28cdb054..31f0baddc0 100644
> --- a/lisp/net/rcirc.el
> +++ b/lisp/net/rcirc.el
> @@ -2495,7 +2495,9 @@ rcirc-markup-urls
>        ;; `insert-text-button', rather than `insert-button', as text
>        ;; property buttons are much faster in large buffers.
>        (insert-text-button
> -       (url-truncate-url-for-viewing url rcirc-url-max-length)
> +       (if rcirc-url-max-length
> +           (url-truncate-url-for-viewing url rcirc-url-max-length)
> +         url)
>         'face 'rcirc-url
>         'follow-link t
>         'rcirc-url url
>
> If you prefer to avoid deletion and insertion when rcirc-url-max-length
> is nil, you can also write the following:
>
> diff --git a/lisp/net/rcirc.el b/lisp/net/rcirc.el
> index fe9c71a21c..4d62b382a6 100644
> --- a/lisp/net/rcirc.el
> +++ b/lisp/net/rcirc.el
> @@ -2485,24 +2485,27 @@ rcirc-markup-my-nick
>  	(rcirc-record-activity (current-buffer) 'nick)))))
>  
>  (defun rcirc-markup-urls (_sender _response)
> -  (while (and rcirc-url-regexp ;; nil means disable URL catching
> +  (while (and rcirc-url-regexp ; nil means disable URL catching.
>                (re-search-forward rcirc-url-regexp nil t))
> -    (let* ((start (match-beginning 0))
> +    (let* ((beg (match-beginning 0))
>             (end (match-end 0))
> -           (url (match-string-no-properties 0))
> -           (link-text (buffer-substring-no-properties start end)))
> +           (url (buffer-substring-no-properties beg end)))
> +      (when rcirc-url-max-length
> +        (replace-match (url-truncate-url-for-viewing url rcirc-url-max-length)
> +                       t t)
> +        (setq end (point)))
>        ;; Add a button for the URL.  Note that we use `make-text-button',
>        ;; rather than `make-button', as text-buttons are much faster in
>        ;; large buffers.
> -      (make-text-button start end
> +      (make-text-button beg end
>  			'face 'rcirc-url
>  			'follow-link t
>  			'rcirc-url url
>  			'action (lambda (button)
>  				  (browse-url (button-get button 'rcirc-url))))
> -      ;; record the url if it is not already the latest stored url
> -      (when (not (string= link-text (caar rcirc-urls)))
> -        (push (cons link-text start) rcirc-urls)))))
> +      ;; Record the URL if it is not already the latest stored URL.
> +      (unless (string= url (caar rcirc-urls))
> +        (push (cons url beg) rcirc-urls)))))
>  
>  (defun rcirc-markup-keywords (sender response)
>    (when (and (string= response "PRIVMSG")
>
> Thanks,
>
> -- 
> Basil

dme.
-- 
Does everyone stare the way I do?