scripts/fetch in rvm-0.1.27 vs scripts/fetch in rvm-0.1.29

@@ -17,11 +17,11 @@
 
 if [[ -z "$1" ]] ; then $rvm_scripts_path/log "fail" "BUG: $0 called without an argument :/" ; exit 1 ; fi
 
 url="$1"; download=1 ; package_name="$2"
 
-if ! which curl &> /dev/null; then
-  $rvm_scripts_path/log "fail" "rvm requires curl, which does not seem to exist in your path :("
+if ! command -v curl > /dev/null ; then
+  $rvm_scripts_path/log "fail" "rvm requires curl. curl was not found in your active path."
   exit 1
 elif [[ ! -z ${rvm_proxy} ]] ; then
   fetch_command="curl -x${rvm_proxy} -L --create-dirs -C - " # -s for silent
 else
   fetch_command="curl -L --create-dirs -C - " # -s for silent