Evaluating an expression that throws an error in Clojure throws E730: using List as a String in Vim

[glittershark]

This is only happening in one project on this machine - all my other projects use a regular old lein repl and let fireplace connect to the nrepl, but the project in question is launching an nrepl server as part of its startup process, and installing the cider and piggieback middleware manually.

Not really sure how to dig deeper as the above error is literally all I'm getting

[tpope]

No stacktrace?

[glittershark]

None, unfortunately

[glittershark]

stepped through it with a debugger, error gets thrown on this line

[glittershark]

>echo stacktrace
[{'file': 'Class.java', 'method': 'cast', 'name': 'java.lang.Class/cast', 'flags': ['java'], 'line': 3369, 'type': 'java', 'class': 'java.lang.Class'},
 {'file': 'core.clj', 'method': 'invokeStatic', 'name': 'clojure.core$cast/invokeStatic', 'flags': ['clj'], 'line': 351, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$cast', 'fn': 'cast', 'var': 'clojure.core/cast'},
 {'file': 'core.clj', 'method': 'invokeStatic', 'name': 'clojure.core$_PLUS_/invokeStatic', 'flags': ['clj'], 'line': 976, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$_PLUS_', 'fn': '+', 'var': 'clojure.core/+'},
 {'file': 'core.clj', 'method': 'invoke', 'name': 'clojure.core$_PLUS_/invoke', 'flags': ['dup', 'clj'], 'line': 976, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$_PLUS_', 'fn': '+', 'var': 'clojure.core/+'},
 {'file': [], 'method': 'invokeStatic', 'name': 'user$eval59954/invokeStatic', 'flags': ['unknown'], 'line': 1, 'type': 'unknown', 'class': 'user$eval59954'},
 {'file': [], 'method': 'invoke', 'name': 'user$eval59954/invoke', 'flags': ['dup', 'unknown'], 'line': 1, 'type': 'unknown', 'class': 'user$eval59954'},
 {'file': 'Compiler.java', 'method': 'eval', 'name': 'clojure.lang.Compiler/eval', 'flags': ['tooling', 'java'], 'line': 6978, 'type': 'java', 'class': 'clojure.lang.Compiler'},
 {'file': 'Compiler.java', 'method': 'eval', 'name': 'clojure.lang.Compiler/eval', 'flags': ['dup', 'tooling', 'java'], 'line': 6941, 'type': 'java', 'class': 'clojure.lang.Compiler'},
 {'file': 'core.clj', 'method': 'invokeStatic', 'name': 'clojure.core$eval/invokeStatic', 'flags': ['clj'], 'line': 3187, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$eval', 'fn': 'eval', 'var': 'clojure.core/eval'},
 {'file': 'core.clj', 'method': 'invoke', 'name': 'clojure.core$eval/invoke', 'flags': ['clj'], 'line': 3183, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$eval', 'fn': 'eval', 'var': 'clojure.core/eval'},
 {'file': 'main.clj', 'method': 'invoke', 'name': 'clojure.main$repl$read_eval_print__9983$fn__9986/invoke', 'flags': ['clj'], 'line': 242, 'ns': 'clojure.main', 'type': 'clj', 'class': 'clojure.main$repl$read_eval_print__9983$fn__9986', 'fn': 'repl/read-eval-print/fn', 'var': 'clojure.main/repl'},
 {'file': 'main.clj', 'method': 'invoke', 'name': 'clojure.main$repl$read_eval_print__9983/invoke', 'flags': ['dup', 'clj'], 'line': 242, 'ns': 'clojure.main', 'type': 'clj', 'class': 'clojure.main$repl$read_eval_print__9983', 'fn': 'repl/read-eval-print', 'var': 'clojure.main/repl'},
 {'file': 'main.clj', 'method': 'invoke', 'name': 'clojure.main$repl$fn__9992/invoke', 'flags': ['clj'], 'line': 260, 'ns': 'clojure.main', 'type': 'clj', 'class': 'clojure.main$repl$fn__9992', 'fn': 'repl/fn', 'var': 'clojure.main/repl'},
 {'file': 'main.clj', 'method': 'invokeStatic', 'name': 'clojure.main$repl/invokeStatic', 'flags': ['dup', 'clj'], 'line': 260, 'ns': 'clojure.main', 'type': 'clj', 'class': 'clojure.main$repl', 'fn': 'repl', 'var': 'clojure.main/repl'},
 {'file': 'main.clj', 'method': 'doInvoke', 'name': 'clojure.main$repl/doInvoke', 'flags': ['clj'], 'line': 176, 'ns': 'clojure.main', 'type': 'clj', 'class': 'clojure.main$repl', 'fn': 'repl', 'var': 'clojure.main/repl'},
 {'file': 'RestFn.java', 'method': 'invoke', 'name': 'clojure.lang.RestFn/invoke', 'flags': ['java'], 'line': 1523, 'type': 'java', 'class': 'clojure.lang.RestFn'},
 {'file': 'interruptible_eval.clj', 'method': 'invoke', 'name': 'clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__8816/invoke', 'flags': ['tooling', 'clj'], 'line': 87, 'ns': 'clojure.tools.nrepl.middleware.interruptible-eval', 'type': 'clj', 'class': 'clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__8816', 'fn': 'evaluate/fn', 'var': 'clojure.tools.nrepl.middleware.interruptible-eval/evaluate'},
 {'file': 'AFn.java', 'method': 'applyToHelper', 'name': 'clojure.lang.AFn/applyToHelper', 'flags': ['java'], 'line': 152, 'type': 'java', 'class': 'clojure.lang.AFn'},
 {'file': 'AFn.java', 'method': 'applyTo', 'name': 'clojure.lang.AFn/applyTo', 'flags': ['java'], 'line': 144, 'type': 'java', 'class': 'clojure.lang.AFn'},
 {'file': 'core.clj', 'method': 'invokeStatic', 'name': 'clojure.core$apply/invokeStatic', 'flags': ['clj'], 'line': 657, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$apply', 'fn': 'apply', 'var': 'clojure.core/apply'},
 {'file': 'core.clj', 'method': 'invokeStatic', 'name': 'clojure.core$with_bindings_STAR_/invokeStatic', 'flags': ['clj'], 'line': 1963, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$with_bindings_STAR_', 'fn': 'with-bindings*', 'var': 'clojure.core/with-bindings*'},
 {'file': 'core.clj', 'method': 'doInvoke', 'name': 'clojure.core$with_bindings_STAR_/doInvoke', 'flags': ['dup', 'clj'], 'line': 1963, 'ns': 'clojure.core', 'type': 'clj', 'class': 'clojure.core$with_bindings_STAR_', 'fn': 'with-bindings*', 'var': 'clojure.core/with-bindings*'},
 {'file': 'RestFn.java', 'method': 'invoke', 'name': 'clojure.lang.RestFn/invoke', 'flags': ['java'], 'line': 425, 'type': 'java', 'class': 'clojure.lang.RestFn'},
 {'file': 'interruptible_eval.clj', 'method': 'invokeStatic', 'name': 'clojure.tools.nrepl.middleware.interruptible_eval$evaluate/invokeStatic', 'flags': ['tooling', 'clj'], 'line': 85, 'ns': 'clojure.tools.nrepl.middleware.interruptible-eval', 'type': 'clj', 'class': 'clojure.tools.nrepl.middleware.interruptible_eval$evaluate', 'fn': 'evaluate', 'var': 'clojure.tools.nrepl.middleware.interruptible-eval/evaluate'},
 {'file': 'interruptible_eval.clj', 'method': 'invoke', 'name': 'clojure.tools.nrepl.middleware.interruptible_eval$evaluate/invoke', 'flags': ['tooling', 'clj'], 'line': 55, 'ns': 'clojure.tools.nrepl.middleware.interruptible-eval', 'type': 'clj', 'class': 'clojure.tools.nrepl.middleware.interruptible_eval$evaluate', 'fn': 'evaluate', 'var': 'clojure.tools.nrepl.middleware.interruptible-eval/evaluate'},
 {'file': 'interruptible_eval.clj', 'method': 'invoke', 'name': 'clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__8861$fn__8864/invoke', 'flags': ['tooling', 'clj'], 'line': 222, 'ns': 'clojure.tools.nrepl.middleware.interruptible-eval', 'type': 'clj', 'class': 'clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__8861$fn__8864', 'fn': 'interruptible-eval/fn/fn', 'var': 'clojure.tools.nrepl.middleware.interruptible-eval/interruptible-eval'},
 {'file': 'interruptible_eval.clj', 'method': 'invoke', 'name': 'clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__8856/invoke', 'flags': ['tooling', 'clj'], 'line': 190, 'ns': 'clojure.tools.nrepl.middleware.interruptible-eval', 'type': 'clj', 'class': 'clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__8856', 'fn': 'run-next/fn', 'var': 'clojure.tools.nrepl.middleware.interruptible-eval/run-next'},
 {'file': 'AFn.java', 'method': 'run', 'name': 'clojure.lang.AFn/run', 'flags': ['java'], 'line': 22, 'type': 'java', 'class': 'clojure.lang.AFn'},
 {'file': 'ThreadPoolExecutor.java', 'method': 'runWorker', 'name': 'java.util.concurrent.ThreadPoolExecutor/runWorker', 'flags': ['java'], 'line': 1142, 'type': 'java', 'class': 'java.util.concurrent.ThreadPoolExecutor'},
 {'file': 'ThreadPoolExecutor.java', 'method': 'run', 'name': 'java.util.concurrent.ThreadPoolExecutor$Worker/run', 'flags': ['java'], 'line': 617, 'type': 'java', 'class': 'java.util.concurrent.ThreadPoolExecutor$Worker'},
 {'file': 'Thread.java', 'method': 'run', 'name': 'java.lang.Thread/run', 'flags': ['java'], 'line': 745, 'type': 'java', 'class': 'java.lang.Thread'}]

[glittershark]

292 fixes the symptoms for me. No clue how those empty lists got in there, though...

as a side note, figuring out that bug has brought me to an entirely new level of respect for you and how much vimscript you maintain. I don't understand how you stay sane.

[tpope]

We probably should be doing something with those empty files rather than just dropping them, because the resulting stack trace is incomplete without them. First step would be checking how they're displayed in the REPL.

[tpope]

New commit will show them as class.method without the parenthetical.

[glittershark]

nice! that's even better