Fixing fuzzycd to play nicely with other tools that re-define cd, suc…

…h as RVM.

fuzzycd_bash_wrapper.sh

@@ -1,5 +1,15 @@
 # This displaces the normal bash "cd" builtin command. cd needs to be redefined this way because it's not
 # a normal binary, but rather a Bash builtin.
+
+# The "cd" command may have already been redefined by another script (RVM does this, for example):
+if [ x`type -t cd` == "xfunction" ]; then
+  # In this case, we define a new "__cd" function with the same body as the previously defined "cd" function.
+  eval $(type cd | grep -v 'cd is a function' | sed 's/^cd/__cd/' | sed 's/^}/;}/' )
+else
+  # Otherwise, we just define "__cd" to directly call the builtin.
+  eval "__cd() { builtin cd \$*; }"
+fi
+
 cd() {
   # This assumes that fuzzycd.rb is available somewhere in your PATH.
   fuzzycd.rb $*
@@ -9,8 +19,8 @@ cd() {
   if [ "$output" = "@nomatches" ]; then
     echo "No files match \"$*\""
   elif [ "$output" = "@passthrough" ]; then
-    builtin cd "$*"
+    __cd "$*"
   elif [ "$output" != "@exit" ]; then
-    builtin cd "$output"
+    __cd "$output"
   fi
 }