--- a/test/callback_suite/mk-cases.lua	Sun Apr 10 16:10:10 2022 +0200
+++ b/test/callback_suite/mk-cases.lua	Sun Apr 10 16:18:28 2022 +0200
@@ -1,7 +1,12 @@
 require "config"
 
-function trim(l) return l:gsub("^%s+",""):gsub("%s+$","") end
+-- use shared helpers to generate cases
+package.path = '../common/?.lua;' .. package.path
+require"mk-cases"
+
+
 function mkcase(id,sig)
+  local sig = trim(sig)
   local rtype = string.sub(sig, -1)
   local i = 1
   local args = { rtype }
@@ -20,11 +25,6 @@
   return "F" .. (#args-1) .. "(f" .. id .. "," .. table.concat(args,',') .. ")\n"
 end
 
--- use shared helpers to generate cases
-package.path = '../common/?.lua;' .. package.path
-require"mk-cases"
-
-
 function mkall()
   -- force minargs for ordered mode
   if mode == "ordered" then