Merge pull request jf#14 from traviscline/master

RBENV_GEMSET_FILE env var support

README.mkd

@@ -32,6 +32,9 @@ The gemset plugin will cause rbenv to search for the `.rbenv-gemsets` file in
 the current directory, as well as in all ancestor directories, so as long
 as there is an `.rbenv-gemsets` file at or above the current directory.
 
+Alternatively, you can set the RBENV_GEMSET_FILE environment variable to the
+absolute path of the gemset file.
+
 
 ## License
 

libexec/rbenv-gemset-file

@@ -1,12 +1,20 @@
 #!/usr/bin/env bash
 set -e
 
-root="$(pwd)"
-while [ -n "$root" ]; do
-  if [ -e "${root}/.rbenv-gemsets" ]; then
-    echo "${root}/.rbenv-gemsets"
-    exit
-  fi
-  root="${root%/*}"
-done
+if [ -z "$RBENV_GEMSET_FILE" ]; then
+  root="$(pwd)"
+  while [ -n "$root" ]; do
+    if [ -e "${root}/.rbenv-gemsets" ]; then
+      RBENV_GEMSET_FILE="${root}/.rbenv-gemsets"
+      break
+    fi
+    root="${root%/*}"
+  done
+fi
+
+if [ -e "$RBENV_GEMSET_FILE" ]; then
+  echo "$RBENV_GEMSET_FILE"
+  exit
+fi
+
 exit 1