Re: org-capture firefox extension broken [silently]

[Max Nikulin]

On 11/06/2022 08:43, Samuel Wales wrote:
> On 6/10/22, Max Nikulin wrote:
> > - Have you tried to check that org-protocol still works on your system?
> >         xdg-open 'org-protocol:/org-capture?url=something'
>
> i ran this from emacs shell mode bash cli as user.  it brought firefox
> to fg, opened a new tab, and the tab has a search page in my default
> search engine that says "org-protocol:/org-capture?url=something" in
> the search box.  is that correct?

First of all, I recommend to run such command in a terminal application 
instead of Emacs. I do not remember which of Emacs shell modes executes 
commands asynchronously (eshell?), so xdg-open fails e.g. for Gnome or 
KDE. Having fluxbox you should be affected in less degree. Another point 
is that when shell running emacsclient is associated with a terminal 
then emacs might try to create a frame inside this terminal. I am unsure 
concerning your preferences for capture windows, but it is better to 
factor out Emacs as shell here.

Actually you have found the source of the problem. A handler for 
org-protocol is not configured in your environment, so xdg-open falls 
back to a browser and firefox falls back to search engine. It is not a 
problem of the browser add-on.

> > Prevented navigation to 
> > “org-protocol://capture?template=p&url=https%3A%2F%2Fplanet.emacslife.com%2F&title=Planet%20Emacslife&body=This%20month”
> >  due to an unknown protocol.

"unknown protocol" confirms the conclusion.

Check that the ~/.config/mimeapps.list (or maybe 
~/.local/share/applications/mimeapps.list) file contains the following 
sections and entries therein (unsure exact name of your desktop file)

[Added Associations]
x-scheme-handler/org-protocol=org-protocol.desktop;
[Default Applications]
x-scheme-handler/org-protocol=org-protocol.desktop;

Or ~/.local/share/applications/mimeinfo.cache has
[MIME Cache]
x-scheme-handler/org-protocol=org-protocol.desktop;

I just have realized that for kde-open5 it is enough to have 
mimeinfo.cache entry. Gnome without "Default Application" entry shows 
its own application selection dialogue. When there is no handlers like 
kde-open5 specific to desktop environment, xdg-open may scan .desktop 
files. It seems, you have some problem with your .desktop file for 
org-protocol. Check that you have it in ~/.local/share/applications/ and 
try the command specified in the Exec field in a terminal (with some 
org-protocol URI).

An entry in ~/.local/share/applications/mimeinfo.cache is usually created by
    update-desktop-database ~/.local/share/applications
and entries to ~/.config/mimeapps.list may be added by
    xdg-mime default org-protocol.desktop x-scheme-handler/org-protocol
or something like
    xdg-settings set default-url-scheme-handler org-protocol 
org-protocol.desktop
The latter actually calls the former. To check that files are updated:
    xdg-mime query default x-scheme-handler/org-protocol
    xdg-settings get default-url-scheme-handler org-protocol

If it is still broken then it is time to inspect output of
    sh -x /usr/bin/xdg-open 'org-protocol:/org-capture?url=something'

> > - Have you tried to create a html page with an org-protocol link and to
> > click on it?
>
> no clue what i would do to do that.

For example, create an org file with some link, export it as HTML, edit 
the result to use the URI from "Prevented navigation" error in <a 
href="..."> and open this html file in Firefox. Using org-protocol URI 
as link target in an org file is possible as well, but additional setup 
may be required to avoid treating it as unknown target.

By the way, https://github.com/sprig/org-capture-extension/ has some 
instructions. They are not perfect, but they are still in some points 
better than worg page for org-protocol.