Avoid requiring . when running paths

[refi64]

The title probably doesn't make much sense, so here's an example:

$ path/app

This works in bash, but it doesn't in rc unless . is in $path. I understand why this would be useful, but it can be really irritating, too. I'm using rc as the scripting language in my project IsolateKit, and this would be a really nice addition!

[xyb3rt]

Whats wrong with $ ./path/app?

[TobyGoodwin]

Interesting project, and delighted that you're using rc!

But I don't think there's anything to fix here. In rc: if a command starts with / it's absolute, otherwise we search $path. That's a simpler rule than sh, which I think is: if it start with / it's absolute, if it contains / it's relative to the cwd, otherwise we search $PATH.

This was used in Plan 9, as I understand it, to implement subcommands. In the Linux world, git is a wrapper, but in the Plan 9 world (had it existed there) it would simply be a directory /bin/git/ and you'd say git/commit ... etc etc

[rakitzis]

NB: "asbolute" pathnames may also start with ./ and ../