fix detecting installed rubies, fix #a82073e13555cb909720ec595afa2cab…

…598d166f

scripts/functions/cli

@@ -275,11 +275,12 @@ __rvm_cli_install_ruby()
   if
     [[ -n "$1" ]]
   then
-    typeset __rubies __search __installed __missing
+    typeset __rubies __installed __missing __search_list
     typeset -a __search
     __rvm_custom_separated_array __search , "$1"
-    __rubies=""
-    __rvm_cli_rubies_select "$1" || return $?
+    __rubies="$1"
+    __search_list=""
+    __rvm_cli_rubies_select || return $?
     if __rvm_cli_rubies_not_installed
     then __rvm_run_wrapper manage install "${__rubies}" || return $?
     fi
@@ -296,26 +297,22 @@ __rvm_cli_rubies_select()
   do
     rvm_ruby_string="${__ruby}"
     __rvm_select &&
-    if
-      [[ -n "$rvm_ruby_string" ]]
-    then
-      __rubies+="$rvm_ruby_string,"
-      __search+="^$rvm_ruby_string\$|"
+    if [[ -n "$rvm_ruby_string" ]]
+    then __search_list+="^$rvm_ruby_string\$|"
     else
       rvm_error "Could not detect ruby version/name for installation '${__ruby}', please be more specific."
       return 1
     fi
   done
-  __rubies="${__rubies%,}"
-  __search="${__search%|}"
+  __search_list="${__search_list%|}"
 }
 
 __rvm_cli_rubies_not_installed()
 {
   if
     (( ${rvm_force_flag:-0} == 0 )) &&
     __installed="$(
-      __rvm_list_strings | __rvm_grep -E "${__search}"
+      __rvm_list_strings | __rvm_grep -E "${__search_list}"
     )" &&
     [[ -n "${__installed}" ]]
   then