rvm switch /path/to/rvm

HACKING.md

@@ -21,9 +21,8 @@ the tests (you will need rvm already installed).
 You need a test rvm install to run the test suite against:
 
     $ git clone https://github.com/wayneeseguin/rvm  # or your own github fork
-    $ export rvm_path=~/path/to/rvm/test/install     # choose a path here
-    $ export rvm_bin_path=$rvm_path/bin
     $ cd rvm
+    $ rvm switch ~/path/to/rvm/test/install          # choose a path here
     $ ./install
 
 This will create a test installation of rvm in
@@ -37,6 +36,10 @@ you also need to do:
 
     $ rvm reload
 
+To get back to using orginal rvm installation run:
+
+    $ rvm switch ~/.rvm
+
 ## Hacking RVM via TDD (Test-Driven Development)
 
 First write a test for the behaviour you expect.  For details on how

scripts/cli

@@ -256,7 +256,7 @@ __rvm_parse_args()
             rvm_parse_break=1
             ;;
 
-          docs|alias|rubygems|cleanup|tools|disk-usage|snapshot|repair|migrate|upgrade|cron)
+          docs|alias|rubygems|cleanup|tools|disk-usage|snapshot|repair|migrate|upgrade|cron|group|switch)
             rvm_action="$rvm_token"
             rvm_ruby_args=("$next_token" "$@")
             rvm_parse_break=1
@@ -302,12 +302,6 @@ __rvm_parse_args()
             fi
             ;;
 
-          group)
-            rvm_action="group"
-            rvm_ruby_args=("$next_token" "$@")
-            rvm_parse_break=1
-            ;;
-
           alt*)
             rvm_action="help"
             rvm_ruby_args=("alt.md")
@@ -864,6 +858,11 @@ Please do one of the following:
       then __rvm_use
       fi
       ;;
+    switch)
+      if rvm_is_a_shell_function
+      then __rvm_switch "${rvm_ruby_args[@]}"
+      fi
+      ;;
     srcdir)
       __rvm_source_dir
       ;;

scripts/functions/env

@@ -144,3 +144,36 @@ __rvm_remove_rvm_from_path()
   __rvm_remove_from_path "${rvm_path}"
   builtin hash -r
 }
+
+__rvm_switch()
+{
+  typeset new_rvm_path new_rvm_bin_path
+
+  (( $# )) && [[ -z "$1" ]] && shift || true # skip first empty argument
+  (( $# )) && [[ -n "$1" ]] && [[ -d "$1" || -d "${1%/*}" ]] && [[ ! -f "$1" ]] ||
+  {
+    rvm_error "No valid path given."
+    return 1
+  }
+  [[ "${rvm_path}" != "${new_rvm_path}" ]] ||
+  {
+    rvm_warn "Already there!"
+    return 2
+  }
+  rvm_log "Switching ${rvm_path} => ${1}"
+
+  new_rvm_path="${1%/}"
+  new_rvm_bin_path="${2:-$new_rvm_path/bin}"
+  new_rvm_bin_path="${new_rvm_bin_path%/}"
+
+  __rvm_use_system
+  __rvm_remove_from_path "${rvm_path}"
+
+  rvm_reload_flag=1
+  rvm_path="${new_rvm_path}"
+  rvm_bin_path="${new_rvm_bin_path}"
+  rvm_scripts_path="${rvm_path}/scripts"
+
+  __rvm_remove_from_path "${rvm_path}"
+  __rvm_add_to_path prepend "${rvm_bin_path}"
+}