add tab-complete to repl

[deoxxa]

No description provided.

[stevenh]

Can we get a proper PR description for this @deoxxa it seems you have two commits and you only mention the title from the first one.

[deoxxa]

What would you suggest instead? The first commit is only there to support the second one.

[stevenh]

Something like:

Add tab-complete to repl

Add support for using tab complete when using repl.

This also adds the KeysByParent to otto objects which ....

Subject is typically a brief summary of the change and description provides the detail.

Given the recursive nature of KeysByParent could this cause significant slowdown when not desired?

If so would good to add a command line option to disable it.

[deoxxa]

Right - can do! Please hold :)

[stevenh]

Would be nice if we started to pass linting with doc comments e.g. this should be of the form:

// KeysByParent returns the keys for the object, and those if its parents, in order of "closest" to "furthest".

This makes docs much nicer for external consumers.

[deoxxa]

Can't think of a reason why not!

[deoxxa]

Done and done.

[deoxxa]

Autocomplete is now opt-in. To avoid adding another set of OneAndTwoAndThree functions in the repl package, I added an Options struct type. The old functions still exist, and just map through to the RunWithOptions function, setting the equivalent fields on that argument.