all commands are called with frame as well as declared params

the commander is per-frame, so this is in the nature of a
"context" parameter

command.fnl

@@ -1,5 +1,6 @@
 (local { : Gtk  } (require :lgi))
 (local { : view } (require :fennel))
+(local lume (require :lume))
 
 (local commands {})
 
@@ -50,8 +51,9 @@
 (fn invoke-command [command params]
   (command.function params))
 
-(fn next-action [state input-string]
-  (let [state-for-next-param
+(fn next-action [self input-string]
+  (let [state self.state
+        state-for-next-param
         (fn [c params]
           (match (next-param c params)
             k1 {
@@ -60,7 +62,9 @@
                 :collected-params params
                 :active true
                 }
-        _ (do (invoke-command c params) {:active false})))]
+            _ (let [params (lume.extend {} {:frame self.frame} params)]
+                (invoke-command c  params)
+                {:active false})))]
 
     (match state
       {:active false} state
@@ -92,7 +96,7 @@
       )))
 
 (fn on-activate [self str]
-  (let [s (next-action self.state str)
+  (let [s (next-action self str)
         param (if s.active (. (. s.command :params) s.this-param))]
     (set self.state s)
     {