I put off trying to get point-and-click for several years (!) until
now, because the instructions in the Usage Manual seemed rather
cryptic. But point-and-click would be massively useful, so I thought I
would try to set it up. I followed the instructions to the best of my
limited ability and, rather as I expected, it didn't work for me.
I am running Ubuntu 18.04 with emacs 25.2. and the Unity desktop.
I have LYEDITOR set to "emacsclient --no-wait +%(line)s:%(column)s %" file)s".
I don't have EDITOR set to anything at the moment.
I couldn't seem to find whether I was running gnome 2 or 3, so I
carried out the steps documented for gnome 2, but running
gnome-open textedit:///etc/issue:1:0:0
produced an error saying that the URL could not be found.
So I tried the gnome 3 steps. I created a file
~/tmp/lilypond-invoke-editor.desktop
containing the material specified in the UM, i.e.:
[Desktop Entry]
Version=1.0
Name=lilypond-invoke-editor
GenericName=Textedit URI handler
Comment=URI handler for textedit:
Exec=lilypond-invoke-editor %u
Terminal=false
Type=Application
MimeType=x-scheme-handler/textedit;
Categories=Editor
NoDisplay=true
I then executed:
xdg-desktop-menu install ./lilypond-invoke-editor.desktop
xdg-mime default lilypond-invoke-editor.desktop
x-scheme-handler/textedit
Now when I start emacs, run the command server-start and then issue the
command
gnome-open textedit:///etc/issue:1:0:0
the file /etc/issue does indeed open in emacs. It contains the single
line
Ubuntu 18.04.1 LTS \n \l
This seemed promising, to me.
The PDF viewer I use is evince, so I added the lines
# For Textedit links
/usr/local/bin/lilypond-invoke-editor Cx -> sanitized_helper,
to the file /etc/apparmor.d/local/usr.bin.evince (which was previously
empty), and then ran
sudo apparmor_parser -r -T -W /etc/apparmor.d/usr.bin.evince
as instructed in the UM.
However, when I open a lilypond PDF file in evince and click on a note,
I get an error message:
Unable to open external link.
Failed to execute child process “lilypond-invoke-editor” (Permission
denied)
Yet I can run lilypond-invoke-editor from a command line without any
parameters, and I get the expected usage help.
Can anyone suggest what I have done wrong or omitted to do?
David
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