Fixes recursion (#33)

functions/__nvm_run.fish

@@ -7,14 +7,15 @@ function __nvm_run
  end
 
  function run_command
+ set stack (status stack-trace | grep called | cut -d " " -f 7)
  set count (count $argv)
  if test "$count" -ge 2
  set args $argv[2..-1]
  else
  set args ""
  end
 
- if type -fqP $argv[1]
+ if type -fqP $argv[1]; and test "$stack[1]" != (which $argv[1])
  # https://stackoverflow.com/questions/45237675/proxying-arguments-from-one-function-to-a-command/45238056#45238056
  eval (string escape -- (type -fP $argv[1]) $args)
  else