The eval call is not needed, actually.

grayed · grayed · commit 7f2f7347e61f · 2018-08-27T19:02:27.000+03:00
diff --git a/share/cht.sh.txt b/share/cht.sh.txt
@@ -460,5 +460,5 @@ while true; do
     version)        cmd_name=version;;
     *)              cmd_name="query $cmd_name";;
   esac
-  eval cmd_$cmd_name \$cmdargs 
+  cmd_$cmd_name $cmdargs 
 done
