I experimented with adding exactly that recently: https://matt.sh/advanced-redis-pubsub-scripts https://matt.sh/advanced-redis-pubsub-scripts (code in the branc

I experimented with adding exactly that recently: https://matt.sh/advanced-redis-pubsub-scripts https://matt.sh/advanced-redis-pubsub-scripts (code in the branch at https://github.com/mattsta/redis/tree/pubsub-scripting https://github.com/mattsta/redis/tree/pubsub-scripting). It hasn't been extensively tested, but it works for my isolated test cases.