Handle repeated sep

Author: st9007a

make/bootstrap.lua

@@ -48,7 +48,7 @@ local root; do
         if sep == '\\' then
             sep = '/\\'
         end
-        local pattern = "["..sep.."][^"..sep.."]+"
+        local pattern = "["..sep.."]+[^"..sep.."]+"
         root = package.cpath:match("([^;]+)"..pattern..pattern.."$")
         arg[0] = root .. package.config:sub(1,1) .. 'main.lua'
     end