https://gitlab.com/kisaragi-hiu/awk-ward.el

This is a neat plugin that lets you edit awk scripts with real time feedback, displaying both the output and any errors.

Update awk-ward to enable updates on any buffer modification

The problem as it has been designed to updates only when you are typing text in to the program.

Patch

Use post-command-hook instead of post-self-insert-hook (07a56482) Commits Shane Mulligan / awk-ward.el GitLab

Demonstration of awk-ward with the patch working

asciinema recording