Document $LOAD_PATH.resolve_feature_path in globals.rdoc

* RDoc does not seem to support documenting singleton object methods,
  and making $LOAD_PATH a class as a workaround is too weird.

1 files changed, 4 insertions, 1 deletions

diff --git a/doc/globals.rdoc b/doc/globals.rdoc
index 96030ea550..284f3d764e 100644
--- a/doc/globals.rdoc
+++ b/doc/globals.rdoc
@@ -25,7 +25,10 @@ $$::   The process number of the Ruby running this script.
 $?::   The status of the last executed child process.  This value is
        thread-local.
 $LOAD_PATH::   Load path for scripts and binary modules by load or require.
-               Aliased to $: and $-I.
+               Aliased to $: and $-I. Has a singleton method
+               $LOAD_PATH.resolve_feature_path(feature) that returns
+               [:rb or :so, path], which resolves the feature to the path the
+               original Kernel#require method would load.
 $LOADED_FEATURES::   The array contains the module names loaded by require.
                      Aliased to $".
 $DEBUG::     The debug flag, which is set by the -d switch.  Enabling debug