Menu-Spec and nested AppDirs

[Mark McLoughlin]

Hey,
	My take on this would be that editors shouldn't be editing .desktop
files by making a copy with the same file ID and putting them in
~/.local/share/applications. $XDG_DATA_HOME, AFAICT, is for application
data, not user configuration files.

	To show a concrete problem with doing it this way, if you installed a
vim package in your home directory, you'd expect the package to install
vim.desktop in ~/.local/share/applications, overriding the user's
changes.

	So, I think editors should be creating their own directory for
edited .desktop files, say ~/.config/pyxdg-applications and copying
the .desktop files there, but with a different desktop file ID.

	That way you'd have, in ~/.config/menus/applications.menu:

<Menu>
  <Name>Applications</Name>
  <AppDir>/home/foo/.config/pyxdg-applications</AppDir>
  <Menu>
    <Name>Debian</Name>
    <Include>
      <Filename>pyxdg-vim.desktop</Filename>
    </Include>
    <Exclude>
      <Filename>vim.desktop</Filename>
    </Exclude>
  </Menu>
</Menu>

Cheers,
Mark.