# Changelog

## master (unreleased)

### New features

- [#3645](https://github.com/clojure-emacs/cider/issues/3645): Show a spinner in the mode line while tests are running.
- [#3865](https://github.com/clojure-emacs/cider/pull/3865): Add default session feature to bypass sesman's project-based dispatch (`cider-set-default-session`, `cider-clear-default-session`).
- Introduce `cider-jack-in-tools` and `cider-register-jack-in-tool` so third-party packages can register new project tools for `cider-jack-in` and `cider-jack-in-universal`.
- Cache the result of `cider--running-nrepl-paths` (used by `cider-locate-running-nrepl-ports`) for `cider-running-nrepl-paths-cache-ttl` seconds (default 5). Repeated `cider-connect` completions no longer re-spawn a fresh round of `ps`/`lsof` subprocesses each time. `cider-clear-running-nrepl-paths-cache` discards the cache on demand.
- New `nrepl-make-eval-handler` with a keyword-arg API (`:on-value`, `:on-stdout`, `:on-stderr`, `:on-done`, `:on-eval-error`, `:on-content-type`, `:on-truncated`). Sub-handlers no longer take a buffer argument -- they close over whatever they need. `nrepl-make-response-handler`, the legacy 7-positional-arg form, is preserved as an obsolete shim that adapts the old (buffer x) lambdas to the new (x) lambdas, so existing extensions keep working.
- New `cider-repl-history-doctor' command: walks `cider-repl-input-history' looking for entries whose parens don't balance under Clojure syntax, shows each in a side buffer, and asks whether to delete it.  When done, rewrites `cider-repl-history-file' if one is configured.  Useful for cleaning up history after a typo got committed that breaks `cider-repl-history' rendering (see [#3915](https://github.com/clojure-emacs/cider/issues/3915)).
- Decouple the nREPL transport layer from CIDER's UI layer (closes [#1099](https://github.com/clojure-emacs/cider/issues/1099)). `nrepl-make-eval-handler` is now CIDER-agnostic: it no longer references `nrepl-namespace-handler-function`, `nrepl-err-handler-function`, `nrepl-need-input-handler-function`, or any hardcoded UI strings. New `:on-ns` and `:on-status` keyword slots let any consumer wire up their own namespace tracking and status handling. The editor-level `cider-make-eval-handler` wraps it with CIDER's UI behavior (ns tracking, default error handler, need-input prompt, "Evaluation interrupted." / "Namespace not found." messages); in-tree callers all use it.

### Bugs fixed

- [#3209](https://github.com/clojure-emacs/cider/issues/3209): Fix `cider-format` dropping non-map cljfmt options (e.g. `remove-consecutive-blank-lines?`).
- `cider-jack-in-clj` now restores the originating buffer when running its connect callback, matching the behavior of `cider-jack-in-cljs` and `cider-jack-in-clj&cljs`.
- `cider-locate-running-nrepl-ports` now runs its `ps`/`lsof` probes via `process-file`, so endpoint completion for `cider-connect` works correctly from a TRAMP buffer (it inspects the remote host instead of the local one). Same for the `lsof` health check on `.nrepl-port` files.
- `cider-clojure-cli-command` and `cider-jack-in-default` no longer freeze their auto-detection result at package load time. With the new `nil` default, CIDER picks the right command/tool at jack-in time, so installing Clojure (or moving it on PATH) no longer requires restarting Emacs.
- `cider--update-project-dir` no longer reuses a single `*cider-context-buffer*` across calls. Each invocation gets a unique hidden buffer, so concurrent or interrupted jack-ins don't stomp each other.
- `nrepl-server-filter` now treats wildcard/loopback printed bind addresses (`localhost`, `127.0.0.1`, `0.0.0.0`, `::1`, `::`) as "use the calling context", so jacking in over TRAMP to a server that prints `localhost` connects to the TRAMP host instead of the local machine.
- `cider--resolve-command` now actually verifies command presence on remote hosts via `executable-find`'s remote search, instead of unconditionally trusting the user-supplied command. A missing tool on the remote side now surfaces immediately during jack-in instead of as a server-startup failure later.
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