1 files changed, 8 insertions, 1 deletions

diff --git a/frontend/renderer.go b/frontend/renderer.go
index a3aa83d..524c2c8 100644
--- a/frontend/renderer.go
+++ b/frontend/renderer.go
@@ -47,9 +47,16 @@ func New(path string) *Renderer {
                 "html": func(in string) template.HTML {
                         return template.HTML(in)
                 },
+                "add": func(a, b int) int {
+                        return a + b
+                },
+                "sub": func(a, b int) int {
+                        return a - b
+                },
         }
+
         r := &Renderer{
-                template.Must(template.ParseGlob(path + "/*")).Funcs(funcMap),
+                template.Must(template.New("").Funcs(funcMap).ParseGlob(path + "/*")),
                 make(map[string]interface{}),
         }