No ‘command’ command in busybox?

[Karl Ove Hufthammer]

I have just started using busybox, and am impressed by the speed of 
some of its utilities. However, when I tried using it on one of my 
POSIX-based scripts, I got an error messages indicating that the ‘command’ 
command isn’t implemented.

Here is an example script, which gives ‘command: not found’ errors when run 
through busybox ash or sh:

---
command -v grep
command -v ls
---

The ‘command’ command is defined in POSIX:
http://www.opengroup.org/onlinepubs/009695399/utilities/command.html

I’m using the binary builds for my distro (Mandriva 2009.1), so initially I 
expected that some compile options were missing when building this. 
However, looking at the list of commands at 
http://www.busybox.net/downloads/BusyBox.html
it seems there really is no ‘command’ command. Is this true, and is there any 
reason why? It does seem like quite a simple command. :)

-- 
Karl Ove Hufthammer