A host that draws on the terminal (a TUI) cannot let the logger write to
stdout or stderr, yet the records are worth showing inside the host.
SetErrorHandler already covers internal diagnostics; SetConsoleWriter is
its sibling for console output.
- SetConsoleWriter(w) sends console output of every console_target to w,
split's warn-and-above records included; nil restores stdout/stderr.
It holds across ApplyConfig and is safe while logging.
- One stored value: ApplyConfig and SetConsoleWriter publish the console
writers through storeConsole; the processor's split branch now reads
the stored warn writer instead of writing os.Stderr directly.
- TestLoggerConsoleTargets becomes TestConsoleWriterTakesEveryTarget,
which asserts where each target's records land; a second test checks
that nil restores the configured writers.
- README names both hooks for terminal hosts; the API doc's callback
contract covers console writers.
Verified: go build ./... ok; gofmt -l on changed files clean; go vet ./...
ok; go test ./... ok (all four packages, under 1 s); go test -race on the
new tests ok; mutation run 6 of 6 caught.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SyaMAhyEzAp3ULLWJZG4jQ
Claude
lixen