templates/hooks/automatic in pre-commit-0.20.0 vs templates/hooks/automatic in pre-commit-0.21.0

@@ -10,12 +10,12 @@
 #
 
 cmd=`git config pre-commit.ruby 2>/dev/null`
 if   test -n "${cmd}"
 then true
-elif which rvm > /dev/null
+elif which rvm   >/dev/null 2>/dev/null
 then cmd="rvm default do ruby"
-elif which rbenv > /dev/null
+elif which rbenv >/dev/null 2>/dev/null
 then cmd="rbenv exec ruby"
 else cmd="ruby"
 fi
 
 export rvm_silence_path_mismatch_check_flag=1