Support tab-completion of (sub-)tasks and options/arguments

[s1341]

It would be awesome if bangsh could include infrastructure to support completion of task and sub-task names as well as options/arguments.

Is there any chance you would add this functionality?

[bellthoven]

Hey, there!

I think it is a great idea!

I'll study some ways of implementing it. I think the first step would be implementing the contract for options/arguments parsing. For instance, if the subtask has the function b.task.options, so it must have all the opt.add_flag/add_opt calls.

The second step is creating the subtask that generates the content of the proper file that autocompletes, based on a template.

What do you think?

[s1341]

Perhaps tasks can (optionally) implement task.<name>.complete functions? It would be great if sub-tasks and options would be 'automatically' completed by default.

BTW: do you have an example of tasks with sub-tasks?

[bellthoven]

We can think of implementing something like task.name.complete.

I have not tested it because I was not worried about subtasks, but I might work like this:

# "tasks/my_task/subtask.sh"
function btask.subtask.sh () {
  echo "a sub task"
}

# "tasks/my_task.sh"
function btask.my_task.run () {
  b.task.run "my_task/$1"
}

# on terminal:
./you_project my_task subtask