Support XDG basedir spec for config file

[su-v]

AFAIU the currently supported location of the config file is $HOME/.inklingreaderrc.

Would it make sense to you to support the user's definition of $XDG_CONFIG_HOME instead, based on the XDG Base Directory Specification?

From the spec:

• There is a single base directory relative to which user-specific configuration files should be written. This directory is defined by the environment variable $XDG_CONFIG_HOME.

and:

• $XDG_CONFIG_HOME defines the base directory relative to which user specific configuration files should be stored. If $XDG_CONFIG_HOME is either not set or empty, a default equal to $HOME/.config should be used.

[roelj]

Should it store the config file at:

$XDG_CONFIG_HOME/.inklingreaderrc

Or at:

$XDG_CONFIG_HOME/inklingreader/config

According to this specification?

[su-v]

Probably depends on your further plans - AFAIU the spec does not define further specific details about this.

Based on what other (e.g. GNOME or GTK-based) apps do, the config file(s) are stored in a subdir named like the app itself:

$XDG_CONFIG_HOME/inklingreader/

The file name of the actual config file then seems to vary wildy (config.ini, ${app_name}rc, ${app_name}.xml, ${app_name}.cfg, etc).

If you only ever need a single file for the config, it probably could also be

$XDG_CONFIG_HOME/inklingreaderrc

i.e. a config file directly in $XDG_CONFIG_HOME, not hidden (since the XDG user config dir is already hidden) - maybe peek into your ~/.config for more examples?

See also: https://wiki.gnome.org/action/show/Initiatives/GnomeGoals/XDGConfigFolders (has links to Glib utility functions, and other information).

[roelj]

I've updated the code to use this specification. I think we only need one config file. My system doesn't use XDG_CONFIG_HOME, so my config is located in ~/.config/inklingreaderrc.