Fail run ac-nrepl in *nrepl* and clojure-mode buffers.

[kostafey]

The error is:

java.lang.NullPointerException: 
               Reflector.java:296 clojure.lang.Reflector.invokeNoArgInstanceMember
                     core.clj:118 clj-stacktrace.core/parse-exception
                     repl.clj:106 clj-stacktrace.repl/pst-on
                     repl.clj:129 clj-stacktrace.repl/pst+
                  RestFn.java:408 clojure.lang.RestFn.invoke
                     Var.java:415 clojure.lang.Var.invoke
                 NO_SOURCE_FILE:2 user/eval7
               Compiler.java:6511 clojure.lang.Compiler.eval
               Compiler.java:6477 clojure.lang.Compiler.eval
                    core.clj:2797 clojure.core/eval
                     main.clj:245 clojure.main/repl[fn]
                     main.clj:266 clojure.main/repl[fn]
                     main.clj:266 clojure.main/repl
                 RestFn.java:1096 clojure.lang.RestFn.invoke
        interruptible_eval.clj:51 clojure.tools.nrepl.middleware.interruptible-eval/evaluate[fn]
                     AFn.java:159 clojure.lang.AFn.applyToHelper
                     AFn.java:151 clojure.lang.AFn.applyTo
                     core.clj:601 clojure.core/apply
                    core.clj:1771 clojure.core/with-bindings*
                  RestFn.java:425 clojure.lang.RestFn.invoke
        interruptible_eval.clj:36 clojure.tools.nrepl.middleware.interruptible-eval/evaluate
       interruptible_eval.clj:164 clojure.tools.nrepl.middleware.interruptible-eval/interruptible-eval[fn]
                    core.clj:2278 clojure.core/comp[fn]
       interruptible_eval.clj:131 clojure.tools.nrepl.middleware.interruptible-eval/run-next[fn]
                      AFn.java:24 clojure.lang.AFn.run
                 (Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.runTask
                 (Unknown Source) java.util.concurrent.ThreadPoolExecutor$Worker.run
                 (Unknown Source) java.lang.Thread.run

[purcell]

Hi -- please can you tell me how to reproduce this? Which Emacs / nrepl / nrepl.el versions are you using, and what symbol were you trying to complete?

Thanks,

-Steve

[kostafey]

1. GNU Emacs 24.2.1 (i386-mingw-nt5.1.2600) of 2012-08-29 on MARVIN
2. nREPL 0.1.5-preview (automatically installed by nrepl.el)
3. nrepl.el Version: 0.1.5 (installed from ELPA Version: 20120925.626)
4. ac-nrepl.el Version: 0.1 (installed from ELPA Version: 20120920.821)

I'm just trying to write:

(de

wait a second and got the error trace described above.

[purcell]

I have the same versions of Emacs, nREPL and ac-nrepl, but a newer version of nrepl.el -- 20121003.626.

I've tried, but still can't reproduce this error, so you might consider trying the newer nrepl.el to see if it helps.

[kostafey]

I have updated nrepl.el to version 20121003.626 (by removind and adding it again from ELPA), restart both Emacs and nrepl, but nothing changes.

Can I do something to help with debug the problem?

[purcell]

I'm not sure what to suggest at this stage. One thing you can check is whether this is specific to ac-nrepl: try commenting out the ac-nrepl setup code in your startup file, and then try nrepl.el's own tab completion after the "de" symbol. Does that produce the same error?

(Note: to upgrade packages, just use M-x package-list-packages, then press "U", followed by "x". All available upgrades will be installed, but you might need to restart Emacs for the new versions to be loaded.)

[kostafey]

You are right it isn't specific to ac-nrepl. After commenting ac-nrepl's configuration code and restarting Emacs, the complete-symbol call produces the same error.

I should readdress the question. Thank you.

[purcell]

Makes sense. Both ac-nrepl and nrepl.el use similar code to perform the completion. In fact, ac-nrepl calls functions added to recent nrepl.el versions where available.