Archive unused files, pending deletion

archive/fish/functions/ensure_path.fish

@@ -0,0 +1,7 @@
+function ensure_path --description "Ensures directories are in $PATH"
+    for pathdir in $argv
+        if not set -l index (contains -i $pathdir $PATH)
+            set -g -x PATH $pathdir $PATH
+        end
+    end
+end