map config groups to option groups instead of subcommands

[ntessore]

Is there currently a way to map config file groups (i.e. [mygroup]) to option groups defined in an app?

Use case is a program with a number of subcommands that share a very large number of options, which are read from a config file, and are grouped for clarity.

[phlptp]

I believe you can use the alias option on option_groups, this will allow the group name to be used in the config.

app.add_option_group("ogroup")->alias("ogroup");

[default]
val=1
[ogroup]
val2=2