Indent after other keywords

rc/base/makefile.kak

@@ -46,8 +46,8 @@ def -hidden _makefile-indent-on-new-line %{
         try %{ exec -draft Z k<a-x> <a-k>^[^:]+:\s<ret> z i<tab> }
         # cleanup trailing white space son previous line
         try %{ exec -draft k<a-x> s \h+$ <ret>d }
-        # indent after ifeq, ifneq, else
-        try %{ exec -draft Z k<a-x> <a-k> ^\h*(ifeq|ifneq|else)\b<ret> z <a-gt> }
+        # indent after some keywords
+        try %{ exec -draft Z k<a-x> <a-k> ^\h*(ifeq|ifneq|ifdef|ifndef|else|define)\b<ret> z <a-gt> }
     }
 }