Guidance on how to set :transient to a variable or function

[kickingvegas]

Request guidance on how to set the suffix slot :transient to a variable or function that is evaluated.

[tarsius]

This is documented in Transient State. Basically you define a "pre-command", which returns a boolean and maybe sets some variables. Look at the existing transient--do-* for inspiration. Most pre-commands return a constant, yours doesn't have to.

[kickingvegas]

Thanks! Got a working solution.