Use explicit raw JSON from busctl

[pnelson]

Some time ago makoctl mode mysteriously stopped working for me with a jq error that seemed to indicate bad JSON content. I finally took some time to debug it and it was because I had set SYSTEMD_COLORS=16 for my user. The -j flag on busctl appears to be sensitive to this. Changing it to --json=short will ensure the output of that command is always raw.

$ SYSTEMD_COLORS=16 busctl -j --user call org.freedesktop.Notifications /fr/emersion/Mako fr.emersion.Mako -- ListModes | jq '.data[0]'
jq: parse error: Invalid string: control characters from U+0000 through U+001F must be escaped at line 1, column 18

$ SYSTEMD_COLORS=16 busctl --json=short --user call org.freedesktop.Notifications /fr/emersion/Mako fr.emersion.Mako -- ListModes | jq '.data[0]'
[
  "default"
]

[fluix-dev]

This looks good to me, and it matches the man pages:

--json=MODE
    When used with the call or get-property command, shows output
    formatted as JSON. Expects one of "short" (for the shortest
    possible output without any redundant whitespace or line
    breaks) or "pretty" (for a pretty version of the same, with
    indentation and line breaks). Note that transformation from
    D-Bus marshalling to JSON is done in a loss-less way, which
    means type information is embedded into the JSON object tree.

-j
    Equivalent to --json=pretty when invoked interactively from a
    terminal. Otherwise equivalent to --json=short, in particular
    when the output is piped to some other program.