Command wrappers in $PATH, and re-executing the "correct" value

[Zach Riggle <zachriggle@gmail.com>]

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I find that very frequently I write a wrapper for some CLI tool, say
"foobar".

Let's say lives at e.g. /usr/local/bin/foobar, and $path is ( ... ~/bin ...
/usr/local/bin ).

I have a wrapper script ~/bin/foobar, which will be invoked for the command
"foobar".  What my wrapper script does is immaterial, but it eventually
executes the /usr/local/bin/foobar with some set of arguments.

As best I can tell, there are three ways to make this work neatly:

   - Implement "my" foobar as a function, and use "command foobar"
      - How do I make this an autoloadable module, which doesn't need to
      use e.g.
      "autoload foobar && foobar"
   - Remove ~/bin from $path, and add it to the end
      - This might break other things where system binaries take over
   - Some cool tricks with /usr/bin/env and such I haven't thought of

I've already adopted autoloadable functions via $fpath and using "command
foobar" inside the function, but I was curious if there's another way.  I
expect that removing ${0:h} and ${0:A:h} from $path are the most obvious
answers, but I didn't know if there's anything easier.

*Zach Riggle*

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