"Error evaluating:" (clojure.pprint/pprint 10) :as "clojure.pprint.pprint.call(null,10);\n"

[cordoba]

I'm getting the following error regardless of what I type. I start the client inside nrepl of emacs. If I use just terminal it works but not from emacs. (I typed just number 10 and I got following). Any idea how can I fix this? Thanks

"Error evaluating:" (clojure.pprint/pprint 10) :as "clojure.pprint.pprint.call(null,10);\n"

TypeError: Cannot read property 'pprint' of undefined

at eval (eval at (http://localhost:3000/piggieback_browser.js:30554:257), :1:79)
at eval (eval at (http://localhost:3000/piggieback_browser.js:30554:257), :6:3)
at http://localhost:3000/piggieback_browser.js:30554:252
at evaluate_javascript (http://localhost:3000/piggieback_browser.js:30567:4)
at Object.callback (http://localhost:3000/piggieback_browser.js:30632:181)
at goog.messaging.AbstractChannel.deliver (http://localhost:3000/piggieback_browser.js:28088:13)
at goog.net.xpc.CrossPageChannel.xpcDeliver (http://localhost:3000/piggieback_browser.js:29458:14)
at Function.goog.net.xpc.NativeMessagingTransport.messageReceived_ (http://localhost:3000/piggieback_browser.js:28872:13)
at goog.events.Listener.handleEvent (http://localhost:3000/piggieback_browser.js:22998:26)
at Object.goog.events.fireListener (http://localhost:3000/piggieback_browser.js:23375:19)

[bbatsov]

Have you enabled the pretty printing mode? Otherwise there's not reason for nrepl to wrap evaluations in a pprint.

On a related note - I see you're using ClojureScript; might be some problem that occurs only with ClojureScript, but I don't do any tests with it, since I do not use it.

[cordoba]

Thanks for the reply. How do I enable the pretty printing mode?

Yes I am using ClojureScript. I am a newbie, still reading books. What I want is to use emacs as my editor, type in it, hit C-c C-c to evaluate any expression I have on cursor, and do live coding on the browser.

There's no problem if I start bREPL server on the clojure REPL. I get error only when I start Clojure REPL on terminal, connect nrepl of Emacs to it, and then start the bREPL server on the Emacs side (over the nrepl connection). Hoping that if I make this work, Emacs will be where I type and initiate evaluation.

Thanks,
Andy

On Sep 15, 2013, at 3:05 PM, Bozhidar Batsov notifications@github.com wrote:

Have you enabled the pretty printing mode? Otherwise there's not reason for nrepl to wrap evaluations in a pprint.

On a related note - I see you're using ClojureScript; might be some problem that occurs only with ClojureScript, but I don't do any tests with it, since I do not use it.

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[cordoba]

I did enable pretty print using following:

user> (ns user (:require clojure.pprint))
nil
nil

user> print-pretty
true
nil

then again loaded the browser server

user> (require 'cljs.repl.browser)
nil
nil
user> (cemerick.piggieback/cljs-repl
:repl-env (cljs.repl.browser/repl-env :port 9000))
Type :cljs/quit to stop the ClojureScript REPL
nil

but problem persists

cljs.user> 10
"Error evaluating:" (clojure.pprint/pprint 10) :as "clojure.pprint.pprint.call(null,10);\n"
#<TypeError: Cannot read property 'pprint' of undefined>
TypeError: Cannot read property 'pprint' of undefined
at eval (eval at (http://localhost:3000/piggieback_browser.js:30554:257), :1:79)
at eval (eval at (http://localhost:3000/piggieback_browser.js:30554:257), :6:3)
at http://localhost:3000/piggieback_browser.js:30554:252
at evaluate_javascript (http://localhost:3000/piggieback_browser.js:30567:4)
at Object.callback (http://localhost:3000/piggieback_browser.js:30632:181)
at goog.messaging.AbstractChannel.deliver (http://localhost:3000/piggieback_browser.js:28088:13)
at goog.net.xpc.CrossPageChannel.xpcDeliver (http://localhost:3000/piggieback_browser.js:29458:14)
at Function.goog.net.xpc.NativeMessagingTransport.messageReceived_ (http://localhost:3000/piggieback_browser.js:28872:13)
at goog.events.Listener.handleEvent (http://localhost:3000/piggieback_browser.js:22998:26)
at Object.goog.events.fireListener (http://localhost:3000/piggieback_browser.js:23375:19)
nil

On Sep 15, 2013, at 3:05 PM, Bozhidar Batsov notifications@github.com wrote:

Have you enabled the pretty printing mode? Otherwise there's not reason for nrepl to wrap evaluations in a pprint.

On a related note - I see you're using ClojureScript; might be some problem that occurs only with ClojureScript, but I don't do any tests with it, since I do not use it.

—
Reply to this email directly or view it on GitHub.

[klang]

try evaluating this

clljs.user> print-pretty

I'm not sure you have loaded in pretty printing in the right REPL (the
browser REPL) ..

Disclaimer, I am just starting to look at ClojureScript myself, trying to
find an acceptable setup.

/klang

On Sun, Sep 15, 2013 at 9:43 PM, cordoba notifications@github.com wrote:

I did enable pretty print using following:

user> (ns user (:require clojure.pprint))
nil
nil

user> print-pretty
true
nil

then again loaded the browser server

user> (require 'cljs.repl.browser)
nil
nil
user> (cemerick.piggieback/cljs-repl
:repl-env (cljs.repl.browser/repl-env :port 9000))
Type :cljs/quit to stop the ClojureScript REPL
nil

but problem persists

cljs.user> 10
"Error evaluating:" (clojure.pprint/pprint 10) :as
"clojure.pprint.pprint.call(null,10);\n"
#<TypeError: Cannot read property 'pprint' of undefined>
TypeError: Cannot read property 'pprint' of undefined
at eval (eval at (
http://localhost:3000/piggieback_browser.js:30554:257), :1:79)
at eval (eval at (
http://localhost:3000/piggieback_browser.js:30554:257), :6:3)
at http://localhost:3000/piggieback_browser.js:30554:252
at evaluate_javascript (
http://localhost:3000/piggieback_browser.js:30567:4)
at Object.callback (http://localhost:3000/piggieback_browser.js:30632:181)

at goog.messaging.AbstractChannel.deliver (
http://localhost:3000/piggieback_browser.js:28088:13)
at goog.net.xpc.CrossPageChannel.xpcDeliver (
http://localhost:3000/piggieback_browser.js:29458:14)
at Function.goog.net.xpc.NativeMessagingTransport.messageReceived_ (
http://localhost:3000/piggieback_browser.js:28872:13)
at goog.events.Listener.handleEvent (
http://localhost:3000/piggieback_browser.js:22998:26)
at Object.goog.events.fireListener (
http://localhost:3000/piggieback_browser.js:23375:19)
nil

On Sep 15, 2013, at 3:05 PM, Bozhidar Batsov notifications@github.com
wrote:

Have you enabled the pretty printing mode? Otherwise there's not reason
for nrepl to wrap evaluations in a pprint.

On a related note - I see you're using ClojureScript; might be some
problem that occurs only with ClojureScript, but I don't do any tests with
it, since I do not use it.

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Reply to this email directly or view it on GitHub.

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Reply to this email directly or view it on GitHubhttps://github.com//issues/367#issuecomment-24478478
.

[ljos]

I am sorry, but clojure.pprint doesn't exist in clojurescript yet.

[dgtized]

I actually get an error about pp not existing when initially connecting to a nrepl server with some degree of regularity. Unfortunately it's not consistent though. I don't know if this is related though.

[benswift]

Not sure if folks are still having this problem, but I ran into it with CIDER 0.4.0alpha (package: 20131120.1658) (Clojure 1.5.1, nREPL 0.2.3) and just to confirm (as @bbatsov said earlier) that pretty printing was the problem, but on the Emacs side rather than the clojurescript side. Setting (setq cider-repl-use-pretty-printing nil) fixed the problem for me.

[bbatsov]

The problem is that clojure.pprint/pprint is required in the user namespace on cider start, but it's not available when you switch your namespace (say by using (ns ...)). This is one of the many problems with the current approach to evaluating code (inlining forms vs using a dedicated middleware).

[bbatsov]

See #441.