scripts/selector in rvm-1.0.20 vs scripts/selector in rvm-1.0.21

@@ -12,11 +12,13 @@
     [[ -n "${rvm_ruby_patch_level:-""}" ]] && rvm_ruby_string="$rvm_ruby_string-$rvm_ruby_patch_level"
     [[ -n "${rvm_ruby_revision:-""}" ]]    && rvm_ruby_string="$rvm_ruby_string-$rvm_ruby_revision"
     [[ -n "${rvm_ruby_name:-""}" ]]        && rvm_ruby_name="$rvm_ruby_string-n$rvm_ruby_name"
   fi
 
-  __rvm_ruby_string
+  if ! __rvm_ruby_string ; then
+    return $?
+  fi
 
   rvm_archive_extension="tar.gz"
 
   if [[ -z "${rvm_ruby_interpreter:-""}" ]] ; then
     rvm_ruby_interpreter="${rvm_ruby_string//-*/}"
@@ -522,13 +524,26 @@
       rc[[:digit:]]*)
         rvm_ruby_patch_level="$string"
         ;;
 
       [[:digit:]]\.[[:digit:]]*)
-        rvm_ruby_version="$string"
-        rvm_ruby_revision=""
-        rvm_ruby_tag=""
+
+        case "$string" in
+
+          0.*|1.*)
+            rvm_ruby_version="$string"
+            rvm_ruby_revision=""
+            rvm_ruby_tag=""
+            ;;
+
+          *)
+            "$rvm_path/scripts/log" "error" \
+              "Unknown ruby interpreter version: '$string'"
+            return 1
+            ;;
+          esac
+
         ;;
 
       p[[:digit:]]*)
         rvm_ruby_patch_level="$string"
         ;;
@@ -594,10 +609,10 @@
       rvm_ruby_interpreter="$string"
       ;;
 
     *)
       "$rvm_path/scripts/log" "error" \
-        "Unknown ruby string component: '$string'"
+        "Unknown ruby interpreter string component: '$string'"
       return 1
       ;;
     esac
   done