Should kongplete enable default shell completions?

[chairmank]

I explored whether kongplete could be used to implement shell completion in https://github.com/jotaen/klog, and I discovered that the user experience was unsatisfactory because kongplete does not enable default shell completions for things like file paths. (See jotaen/klog#177 for details.) This could be achieved by changing the commands in shellInstall map. For example, the change for bash would be from

"complete -C ${bin} ${cmd}\n"

to

"complete -o default -o bashdefault -C ${bin} ${cmd}\n"

It seems to me that this change would improve the usability of completions. Is there a reason why kongplete does not already do this?