scripts/set in rvm-0.1.45 vs scripts/set in rvm-0.1.46

@@ -10,15 +10,16 @@
 action="$1" ; shift
 args="$*"
 
 __rvm_attempt_single_exec() {
   # Return if we have multiple rubies. or we're not running exec.
-  if [[ "$action" != "exec" ]] || $rvm_scripts_path/match "$rvm_ruby_strings" ' '; then
-    return 1
+  local ruby_string_lines="$(printf "$rvm_ruby_strings" | wc -l | __rvm_strip)"
+  if [[ "$action" = "exec" && -n "$rvm_ruby_strings" && "$ruby_string_lines" = "0" ]]; then
+    __rvm_become "$rvm_ruby_strings"
+    eval "exec $args"
   fi
-  __rvm_become "$rvm_ruby_strings"
-  eval "exec $args"
+  return 1
 }
 
 # Perform an action using one of a selected ruby's specified binaries.
 __rvm_ruby_do() {
   # Return on invalid rubies.
@@ -61,12 +62,12 @@
       rvm_command="$binary $rvm_ruby_mode $args"
     fi
   fi
 
   if [[ ! -z "$rvm_json_flag" ]] || [[ ! -z "$rvm_yaml_flag" ]] || [[ ! -z "$rvm_summary_flag" ]] ; then
-    mkdir -p ./log/$rvm_ruby_string/
-    touch ./log/$rvm_ruby_string/$action.log ./log/$rvm_ruby_string/$action.error.log
+    \mkdir -p ./log/$rvm_ruby_string/
+    \touch ./log/$rvm_ruby_string/$action.log ./log/$rvm_ruby_string/$action.error.log
     eval "$rvm_command" >> ./log/$rvm_ruby_string/$action.log 2>> ./log/$rvm_ruby_string/$action.error.log
   else
     if [[ "$rvm_verbose_flag" != "0" ]] ; then
       current_env="$(__rvm_environment_identifier)"
       if [[ "$current_env" != "$current_set_ruby" ]]; then
@@ -121,11 +122,11 @@
     if [[ ! -z "$rvm_debug_flag" ]] ; then
       $rvm_scripts_path/log "debug" "${rubies[$index]}: ${statuses[$index]}"
     fi
     yaml="$yaml\n  \"${rubies[$index]}\": ${statuses[$index]}"
   done ; unset index array_start
-  mkdir -p log
+  \mkdir -p log
   printf "$yaml" | tee -a log/summary.yaml
 
   return ${#errors[*]}
 }
 
@@ -146,10 +147,10 @@
     json="$json\n    {\"${rubies[$index]}\": ${statuses[$index]}}"
     if (( $index + 1 < $total + $array_start )) ; then json="$json,  " ; fi
   done ; unset index array_start
   json="$json\n  }\n}"
 
-  mkdir -p log
+  \mkdir -p log
   printf "$json" | tee -a log/summary.json
 
   return ${#errors[*]}
 }