Clojurians Log v2

Here's a PR proposal: https://github.com/clj-kondo/clj-kondo/pull/2548

(relevant clj-kondo issue: https://github.com/clj-kondo/clj-kondo/issues/2234)

this could be smart and use clj-kondo, but this could also be dumb and regex on System/exit

this already works with :discouraged-var when you configure it with java.lang.System/exit

(kind of by accident, but someone relied on it so I kept the behavior)

I am not seeing that:

$ clj-kondo --version
clj-kondo v2025.04.07
$ echo '(ns hmm) (System/exit 12)' > hmm.clj
$ clj-kondo --lint hmm.clj --config '{:linters {:discouraged-var {java.lang.System/exit {:message "uh o"}}}}'
linting took 3ms, errors: 0, warnings: 0

I might be holding it wrong

do you need to set the level?

Hmm, guess not:

$ clj-kondo --version
clj-kondo v2025.04.07
$ echo '(ns hmm) (System/exit 12)' > hmm.clj
$ clj-kondo --lint hmm.clj --config '{:linters {:discouraged-var {java.lang.System/exit {:message "uh o" :level :error}}}}'
linting took 37ms, errors: 0, warnings: 0

Tried with warning too:

clj-kondo --lint hmm.clj --config '{:linters {:discouraged-var {java.lang.System/exit {:message "uh o" :level :warning}}}}'
linting took 4ms, errors: 0, warnings: 0

interesting

sorry I was confused, it works for analyze-call, not for discouraged-var: https://github.com/clj-kondo/clj-kondo/issues/1603

so you could write a hook for it today, or write a github issue

I wrote an issue here, I think I've captured it well, lmk if you'd like me to ammend it: https://github.com/clj-kondo/clj-kondo/issues/2541

thanks!