M-x cider-debug-defun-at-point fails, 'No reader function for tag dbg' #1218

fromheten · 2015-07-19T11:25:53Z

Symptoms

Running cider-debug-defun-at-point always throws a ReaderException.

I've tried this only on my machine, but in many different projects. I didn't have it in the version of Cider when cider-debug was introduced, but all subsequent versions of Cider.

How I reproduce it

Write a function like this (defn say-hi [name] (str "Hi " name " !")). Place the point somewhere, like at the space after [name] and before (str .... Hit M-x cider-debug-defun-at-point. Then it throws the exception.

What I have tried (and how I have failed)

Reinstalled emacs, and used a fresh ~/.emacs.d
Update cider
Tried in different projects

System

GNU Emacs 24.4.1, installed with homebrew
Mac osx 10.10.3 (Yosemite)
; CIDER 0.10.0snapshot (package: 20150717.654) (Java 1.7.0_51, Clojure 1.7.0, nREPL 0.2.7)

Stack trace

2. Unhandled clojure.lang.LispReader$ReaderException
   java.lang.RuntimeException: No reader function for tag dbg

               LispReader.java:  292  clojure.lang.LispReader/read
               LispReader.java:  196  clojure.lang.LispReader/read
               LispReader.java:  190  clojure.lang.LispReader/read
                      core.clj: 3640  clojure.core/read
                      core.clj: 3638  clojure.core/read
        interruptible_eval.clj:   68  clojure.tools.nrepl.middleware.interruptible-eval/evaluate/fn/fn
                      main.clj:  238  clojure.main/repl/read-eval-print/fn
                      main.clj:  238  clojure.main/repl/read-eval-print
                      main.clj:  258  clojure.main/repl/fn
                      main.clj:  258  clojure.main/repl
                   RestFn.java: 1523  clojure.lang.RestFn/invoke
        interruptible_eval.clj:   58  clojure.tools.nrepl.middleware.interruptible-eval/evaluate/fn
                      AFn.java:  152  clojure.lang.AFn/applyToHelper
                      AFn.java:  144  clojure.lang.AFn/applyTo
                      core.clj:  630  clojure.core/apply
                      core.clj: 1868  clojure.core/with-bindings*
                   RestFn.java:  425  clojure.lang.RestFn/invoke
        interruptible_eval.clj:   56  clojure.tools.nrepl.middleware.interruptible-eval/evaluate
        interruptible_eval.clj:  188  clojure.tools.nrepl.middleware.interruptible-eval/interruptible-eval/fn/fn
        interruptible_eval.clj:  157  clojure.tools.nrepl.middleware.interruptible-eval/run-next/fn
                      AFn.java:   22  clojure.lang.AFn/run
       ThreadPoolExecutor.java: 1145  java.util.concurrent.ThreadPoolExecutor/runWorker
       ThreadPoolExecutor.java:  615  java.util.concurrent.ThreadPoolExecutor$Worker/run
                   Thread.java:  744  java.lang.Thread/run

1. Caused by java.lang.RuntimeException
   No reader function for tag dbg

               LispReader.java: 1245  clojure.lang.LispReader$CtorReader/readTagged
               LispReader.java: 1228  clojure.lang.LispReader$CtorReader/invoke
               LispReader.java:  684  clojure.lang.LispReader$DispatchReader/invoke
               LispReader.java:  263  clojure.lang.LispReader/read
               LispReader.java:  196  clojure.lang.LispReader/read
               LispReader.java:  190  clojure.lang.LispReader/read
                      core.clj: 3640  clojure.core/read
                      core.clj: 3638  clojure.core/read
        interruptible_eval.clj:   68  clojure.tools.nrepl.middleware.interruptible-eval/evaluate/fn/fn
                      main.clj:  238  clojure.main/repl/read-eval-print/fn
                      main.clj:  238  clojure.main/repl/read-eval-print
                      main.clj:  258  clojure.main/repl/fn
                      main.clj:  258  clojure.main/repl
                   RestFn.java: 1523  clojure.lang.RestFn/invoke
        interruptible_eval.clj:   58  clojure.tools.nrepl.middleware.interruptible-eval/evaluate/fn
                      AFn.java:  152  clojure.lang.AFn/applyToHelper
                      AFn.java:  144  clojure.lang.AFn/applyTo
                      core.clj:  630  clojure.core/apply
                      core.clj: 1868  clojure.core/with-bindings*
                   RestFn.java:  425  clojure.lang.RestFn/invoke
        interruptible_eval.clj:   56  clojure.tools.nrepl.middleware.interruptible-eval/evaluate
        interruptible_eval.clj:  188  clojure.tools.nrepl.middleware.interruptible-eval/interruptible-eval/fn/fn
        interruptible_eval.clj:  157  clojure.tools.nrepl.middleware.interruptible-eval/run-next/fn
                      AFn.java:   22  clojure.lang.AFn/run
       ThreadPoolExecutor.java: 1145  java.util.concurrent.ThreadPoolExecutor/runWorker
       ThreadPoolExecutor.java:  615  java.util.concurrent.ThreadPoolExecutor$Worker/run
                   Thread.java:  744  java.lang.Thread/run

The text was updated successfully, but these errors were encountered:

bbatsov · 2015-07-19T11:36:22Z

//cc @Malabarba

Malabarba · 2015-07-19T12:19:16Z

Wow, thanks for the thorough bug report.
I'm looking into this now. Meanwhile, I noticed you said your Emacs version is 10.10.3, but that's your OS version, right? What do you get with M-x emacs-version?

Malabarba · 2015-07-19T12:23:28Z

Also, what do you get if you evaluate *data-readers* on the REPL buffer?

fromheten · 2015-07-19T12:26:24Z

@Malabarba Thanks :). You're absolutely right about the emacs version. I'm on 24.4.1. Updated the text to fix my error.

test.core> *data-readers*
{} ;;this is what is returned

fromheten · 2015-07-19T12:31:04Z

By the way, on an unrelated note: Shouldn't the name of the function be 'cider-debug-defn-at-point', rather than defun?

Malabarba · 2015-07-19T12:40:18Z

By the way, on an unrelated note: Shouldn't the name of the function be 'cider-debug-defn-at-point', rather than defun?

It should probably be def at point, or, even better, “top-level sexp at point”. But then the name starts to get a little long. :)

I used defun to be consistent with CIDER's other functions, like cider-eval-defun-at-point. In turn, I think CIDER uses “defun” to be consistent with Emacs terminology. Emacs uses defun to specify function definitions in general (even in other languages like C).

Malabarba · 2015-07-19T12:41:12Z

Could you try bumping your tools.nrepl to 0.2.10?
We definitely support 0.2.7, but I just want to know if that's the issue.

fromheten · 2015-07-19T12:49:20Z

It works! That fixed it.

Changed version in ~/.lein/profiles.clj to 0.2.10.
Also bumped my cider-nrepl plugin from 0.9.0-SNAPSHOT to 0.10.0-SNAPSHOT

;; current state as of 19 July 2015
{:user {
        :plugins [
                  [cider/cider-nrepl "0.10.0-SNAPSHOT"]]
        :dependencies [[org.clojure/tools.nrepl "0.2.10"]]}}

Is there some nifty way to always keep these up to date?

Malabarba · 2015-07-19T12:53:45Z

Is there some nifty way to always keep these up to date?

I don't think so. =/

If you were using 0.9.0, then that was surely the problem. Glad it was easy to find. :)

fromheten · 2015-07-19T12:57:03Z

Sorry for reporting a non-bug then! Thanks a lot for creating cider and cider-debug - both are invaluable and make my life better :). Appreciate it a lot!

bbatsov · 2015-07-19T15:13:24Z

@Malabarba So, guess we should bump the required nREPL to 0.2.10? :-)

Malabarba · 2015-07-19T15:42:02Z

@bbatsov No. The issue was that the cider-nrepl version was 0.9.0. It's not an issue with tools.nrepl

bbatsov · 2015-07-19T15:44:08Z

Ah, yes. I missed this.

On Sunday, July 19, 2015, Artur Malabarba [email protected] wrote:

@bbatsov https://github.com/bbatsov No. The issue was that his
cider-nrepl was 0.9.0. It's not an issue with tools.nrepl

—
Reply to this email directly or view it on GitHub
#1218 (comment)
.

Best Regards,
Bozhidar Batsov

http://www.batsov.com

Naomarik · 2015-12-10T10:08:31Z

I'm getting the exact error with boot described as OP with same stack trace.
This is what's in my profile.boot

(swap! boot.repl/*default-dependencies*
       concat '[[cider/cider-nrepl "0.10.0"]
                [org.clojure/tools.nrepl "0.2.12"]
                [refactor-nrepl "2.0.0-SNAPSHOT"]])

When jacking in a lein project the debugger works perfectly, so this seems to be a boot config problem.

; CIDER 0.10.0 (package: 20151204.303) (Java 1.8.0_60, Clojure 1.7.0, nREPL 0.2.12)

Naomarik · 2015-12-10T10:14:58Z

Bonus output:

boot.user> cider.nrepl.middleware.debug/debug-reader
#function[cider.nrepl.middleware.debug/debug-reader]
boot.user> *data-readers*
{}

Malabarba · 2015-12-10T11:00:52Z

@Naomarik I've created a separate issue for that, thanks.

fromheten closed this as completed Jul 19, 2015

Malabarba mentioned this issue Dec 10, 2015

Boot and the data_readers.clj file #1462

Closed

davidh38 mentioned this issue Feb 12, 2021

:lang clojure: No reader function for tag dbg doomemacs/doomemacs#4578

Closed

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M-x cider-debug-defun-at-point fails, 'No reader function for tag dbg' #1218

M-x cider-debug-defun-at-point fails, 'No reader function for tag dbg' #1218

fromheten commented Jul 19, 2015

bbatsov commented Jul 19, 2015

Malabarba commented Jul 19, 2015

Malabarba commented Jul 19, 2015

fromheten commented Jul 19, 2015

fromheten commented Jul 19, 2015

Malabarba commented Jul 19, 2015

Malabarba commented Jul 19, 2015

fromheten commented Jul 19, 2015

Malabarba commented Jul 19, 2015

fromheten commented Jul 19, 2015

bbatsov commented Jul 19, 2015

Malabarba commented Jul 19, 2015

bbatsov commented Jul 19, 2015

Naomarik commented Dec 10, 2015

Naomarik commented Dec 10, 2015

Malabarba commented Dec 10, 2015

M-x cider-debug-defun-at-point fails, 'No reader function for tag dbg' #1218

M-x cider-debug-defun-at-point fails, 'No reader function for tag dbg' #1218

Comments

fromheten commented Jul 19, 2015

Symptoms

How I reproduce it

What I have tried (and how I have failed)

System

Stack trace

bbatsov commented Jul 19, 2015

Malabarba commented Jul 19, 2015

Malabarba commented Jul 19, 2015

fromheten commented Jul 19, 2015

fromheten commented Jul 19, 2015

Malabarba commented Jul 19, 2015

Malabarba commented Jul 19, 2015

fromheten commented Jul 19, 2015

Malabarba commented Jul 19, 2015

fromheten commented Jul 19, 2015

bbatsov commented Jul 19, 2015

Malabarba commented Jul 19, 2015

bbatsov commented Jul 19, 2015

Naomarik commented Dec 10, 2015

Naomarik commented Dec 10, 2015

Malabarba commented Dec 10, 2015