Zsh `which rvm` or `which gem` returns the function contents instead of the path -

i've never had problem before other machines reason in zsh whenever type

which gem 

or

which rvm 

i function contents:

gem () { local result command gem "$@" result="$?"  hash -r return $result } 

instead of it's path. life of me can not figure out why happening.

if switch on bash not have these problems.

this normal behavior zsh. which built-in equivalent whence -c, shows definitions of functions. use whence, possibly combination of options not include -f or -c, if don't want this. example whence -w gem display gem: function. if want search external executables (and not aliases, built-ins, reserved words or functions), use whence -v.