[[ -x =command ]]

[Atom Smasher <atom@xxxxxxxxxxx>]

as i understand the documentation, this should either return 0 or !0 
depending on whether a command "foo" can be found in the path:
	[[ -x =foo ]]

but if =foo can't be found, it craps out.

i've got this in my ~/.zshrc:
	[[ -x =most ]] && export PAGER=most

and i would expect that if "most" isn't in my path, nothing would happen 
(nothing, in this case, meaning the PAGER variable remains unset)... 
instead what actually happens that processing of ~/.zshrc dies with an 
error. not good!

so....
a) should that work the way i'm doing it?
b) if not, what's the correct way to test if a command exists in the PATH?


as documented in zshmisc....

    -x file
        true if file exists and is executable by current process.  If file 
exists and is a directory, then the current process has permission to 
search in the directory.

...

Normal shell expansion is performed on the file, string and pattern 
arguments...


--
        ...atom

 ________________________
 http://atom.smasher.org/
 762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808
 -------------------------------------------------

	"If Jesus Christ were to come today, people would not
	 even crucify him. They would ask him to dinner, and
	 hear what he had to say, and make fun of it."
		-- Thomas Carlyle