scripts/gemsets in rvm-1.0.4 vs scripts/gemsets in rvm-1.0.5

@@ -197,48 +197,57 @@
   fi ; unset gemdir
 }
 
 # Migrate gemsets from ruby X to ruby Y
 gemset_copy() {
-  local source_ruby="${gems_args/ */}"
-  local destination_ruby="${gems_args/* /}"
+  local source_ruby="${args[1]:-""}"
+  local destination_ruby="${args[2]:-""}"
 
   if [[ -z "$destination_ruby" || -z "$source_ruby" ]] ; then
     "$rvm_scripts_path/log" "error" "Source and destination must be specified: 'rvm gemset copy X Y'"
     return 1
   fi
 
+  # TODO: Account for more possibilities:
+  #   rvm gemset copy 1.9.2 @gemsetb        # From 1.9.2 default to current ruby, 1.9.2 exists.
+  #   rvm gemset copy @gemseta @gemsetb     # Current ruby, gemseta exists.
+  #   rvm gemset copy gemseta gemsetb       # Currenty Ruby, gemseta exists.
+  #   rvm gemset copy gemseta 1.8.7@gemsetb # Currenty Ruby@gemseta, current ruby@gemseta exists.
+
   local source_path="$(rvm_silence_logging=1 rvm "$source_ruby" gem env gemdir)"
   local destination_path="$(rvm_silence_logging=1 rvm "$destination_ruby" gem env gemdir)"
 
-  if [[ -z "$source_path" ]]; then
-    "$rvm_scripts_path/log" "error" "Unable to expand ruby '$source_ruby'"
+  if [[ -z "$source_path" || ! -d "$source_path" ]]; then
+    "$rvm_scripts_path/log" "error" "Unable to expand '$source_ruby' or directory does not exist."
     return 1
   fi
 
   if [[ -z "$destination_path" ]]; then
-    "$rvm_scripts_path/log" "error" "Unable to expand ruby '$destination_ruby'"
+    "$rvm_scripts_path/log" "error" "Unable to expand '$destination_ruby'"
     return 1
   fi
 
   if [[ -d "$source_path" ]] ; then
-    [[ ! -d "$destination_path" ]] && mkdir -p "$destination_path"
+
     "$rvm_scripts_path/log" "info" "Copying gemset from $source_ruby to $destination_ruby"
+
     for dir in bin doc gems specifications cache ; do
       mkdir -p "$destination_path/$dir"
       cp -Rf "$source_path/$dir" "$destination_path/"
     done
+
     "$rvm_scripts_path/log" "info" "Making gemset for $destination_ruby pristine."
+
     __rvm_run_with_env "gemset.pristine" "$destination_ruby" "rvm gemset pristine"
   else
     "$rvm_scripts_path/log" "error" "Gems directory does not exist for $source_path ($source_path)"
     return 1
   fi
 }
 
 gemset_export() {
-  rvm_file_name="${rvm_file_name:-$gems_args}"
+  rvm_file_name="${rvm_file_name:-${gems_args// }}"
 
   if [[ ! -z "$rvm_ruby_gem_home" ]] ; then
     export GEM_HOME="$rvm_ruby_gem_home"
     export GEM_PATH="$rvm_ruby_gem_home/bin:$rvm_gems_path/$rvm_ruby_string${rvm_gemset_separator}global/bin"
     export BUNDLE_PATH="$rvm_ruby_gem_home"
@@ -501,10 +510,10 @@
 
 args=($*)
 action="${args[0]}"
 gems_args="$(echo ${args[@]:1}) " # Strip trailing / leading / extra spacing.
 
-export rvm_gemset_name="${args[1]}" # For wherever used.
+export rvm_gemset_name="${args[1]:-""}" # For wherever used.
 rvm_sticky_flag=1
 
 if [[ "import" = "$action" ]] || [[ "load" = "$action" ]] ; then
   if [[ -z "$rvm_ruby_strings" ]]; then
     gemset_import