Use CDPATH if set (#219)

* Respect CDPATH when set

* Fish version

functions/_enhancd_source_history.fish

@@ -6,5 +6,12 @@ function _enhancd_source_history
         return 0
     end
 
+    if test -n "$CDPATH"
+        _enhancd_command_awk \
+            -f "$ENHANCD_ROOT/lib/cdpath.awk" \
+            -v cdpath="$CDPATH" \
+            -v dir="$dir" && return 0
+     end
+
     _enhancd_history_list "$dir"
 end

functions/enhancd/lib/cdpath.awk

@@ -0,0 +1,11 @@
+BEGIN {
+    n = split(cdpath, array, ":")
+    for (i = 1; i <= n; i++) {
+        path = array[i] "/" dir
+        if (! system("test -d " path )) {
+          print path
+          exit 0
+        }
+    }
+    exit 1
+}

src/sources.sh

@@ -51,5 +51,9 @@ __enhancd::sources::history()
     return 0
   fi
 
+  if [[ -n $CDPATH  ]]; then
+    __enhancd::command::awk -f "${ENHANCD_ROOT}/functions/enhancd/lib/cdpath.awk" -v cdpath="${CDPATH}" -v dir="${dir}" && return 0
+  fi
+
   __enhancd::history::list "${dir}"
 }