Got Array(T) working in flag.cr. Hacky stuff it is to convince the compiler that a value isn't going to be nil if I set it

src/cligen.cr

@@ -1,3 +1,4 @@
+require "./cligen/coercable"
 require "./cligen/parsable"
 require "./cligen/annotations"
 require "./cligen/format"
@@ -10,6 +11,11 @@ require "./cligen/app"
 module CliGen
   VERSION = "0.1.0"
 
+  macro override_help_template(filepath)
+    {% raise "ERROR : CliGen.override_help_template : File(#{filepath}) doesn't exist" unless file_exists?(filepath) %}
+    CliGen::HELP_OVERRIDE_TEMPLATE = {{`readlink -f #{filepath}`.strip.stringify}}
+  end
+
   APPNAME = File.basename(PROGRAM_NAME)
 
   record AdditionalDefaultFlag,