add the ability to use fzf on unknown points.

README.md

@@ -46,5 +46,21 @@ Define the sd script in your shell by adding the following to a shell startup fi
 source "<PATH_TO_SD_SCRIPT>"
 ```
 
+#### Fuzzy finding
+If [fzf](https://github.com/junegunn/fzf) is in `$PATH` shifting to a non matching point will bring fzf up with a list of all points, pre filtered with your non matching point. 
+
+After:
+```bash
+sd add foo
+sd add bar
+sd add baz
+
+sd ba
+```
+you will face fzf prompting yout to choose between baz and bar
+
+
+
+
 # Contributing
 Pull requests are always welcome.

sd

@@ -115,12 +115,17 @@ sd() {
   point_path="$sdd/$requested_point"
 
   if [[ ! -L "$point_path" ]]; then
-    echo "Can't shift to point '$requested_point' because it doesn't exist."
+
+    type fzf >/dev/null 2>&1 || {
+    echo  "Can't shift to point '$requested_point' because it doesn't exist."
     return 1
+    }
+    point_path="$sdd/$(find "$sdd" -maxdepth 1 -type l  -exec basename "{}" \; |fzf -q "$*")"
+    if [ "$?" -ne "0" ] ; then
+        return 1
+    fi
   fi
-
   local requested_destination="$(readlink $point_path)/$subpath"
-
   cd "$requested_destination"
   return $?
 }

shpec/sd_shpec.sh

@@ -80,4 +80,29 @@ describe "sd"
       rmdir "$path_with_spaces"
     end
   end
+  describe "using fzf"
+    it "should use fzf if availible"
+      cd /tmp
+      sd add __TEMP &> /dev/null
+      stub_command "fzf" "echo __TEMP"
+      cd /
+      shifted_pwd="$(sd tmp && pwd)"
+      assert equal "$shifted_pwd" "/tmp"
+      rm "$sdd/__TEMP"
+    end
+
+    it "should pass all arguments to fzf as a search query"
+      stub_command "fzf" 'echo "$*" > /tmp/fzfargs'
+      sd foobar
+      assert equal "-q foobar" "$(cat /tmp/fzfargs)"
+      rm /tmp/fzfargs
+    end
+
+    it "shouldn't do anything if fzf returns non-zero"
+      stub_command "fzf" "return 130"
+      cd /tmp
+      sd nonexistent
+      assert equal "$(pwd)" "/tmp"
+    end
+  end
 end