[erlang-questions] Unexpected reply: [rex [badrpc [EXIT [undef ([distel rpc_entry (distel modules ("cr"))] [rpc -handle_call/3-fun-0- 5])]]]]

[Eric Liang]

Ngoc Dao wrote:
> After many try-and-errors I suspect that Distel currently can only
> interpret a module if its .beam file is in the same directory with its
> .erl file, or in ../ebin. Is this true? How to overcome this problem?
>
>   
Maybe add_path will help you.

    @spec code:add_patha(Dir) => true | {error, bad_directory}

And you can check this by code:get_path().

> On Sat, Sep 12, 2009 at 1:09 AM, Eric Liang <eric.l.2046@REDACTED> wrote:
>   
>> Eric Liang wrote:
>>
>> Ngoc Dao wrote:
>>
>> I tried Distel from trunk yesterday and it did not work. The version
>> from download did work:
>> http://code.google.com/p/distel/downloads/list.
>>
>>
>>
>> Thanks Ngoc, it works. But, still can't debug and profile, like Bill
>> Clementson's introduction.
>>
>> When I type C-c C-d i, it looks like is interpreting forever, and can't set
>> breakpoints to debug. I've checked the archive of this mailling list, there
>> is only one unresolved thread here:
>>
>> http://groups.google.com/group/erlang-programming/browse_thread/thread/c34d5245998948c6
>>
>> Do you have more suggestions? TIA.
>>
>> I think I've resolved this. Just load module (C-c C-d L) before being
>> interpreted. So simple. :-[
>>
>> In Distel, load module will tell you nothing more than "load: [module
>> test_ring]", except the first time is successful, in which scenario, it will
>> tell you "Successfully uploaded backend modules into node". So, It's
>> difficulty to  know  whether or not the module was loaded  successfully.
>>
>> And, one module can be loaded only if it's beam has been compiled by the
>> flag: debug_info.
>>
>>
>> On Thu, Sep 10, 2009 at 6:46 PM, Eric Liang <eric.l.2046@REDACTED> wrote:
>>
>>
>> Hi all,
>> To build a erlang IDE, I've tried Distel in emacs22. but unfortunately it
>> does not work well. What I've done is exactly in accordance with Bill
>> Clementson's blog post:
>>
>> http://bc.tech.coop/blog/070528.html
>>
>> They are:
>>
>> Download the latest code from :  http://distel.googlecode.com/svn/trunk/
>> Modify the .emacs. I did confirm the load-path and distel-dir settings are
>> correct. Here is it:
>>
>> ;; This is needed for Erlang mode setup
>> (setq erlang-root-dir "/usr/local/lib/erlang")
>> (setq load-path (cons "/usr/local/lib/erlang/lib/tools-2.5.1/emacs"
>> load-path))
>> (setq exec-path (cons "/usr/local/lib/erlang/bin" exec-path))
>> (require 'erlang-start)
>>
>> ;; This is needed for Distel setup
>> (let ((distel-dir "/Users/bc/Projects/distel/elisp"))
>>   (unless (member distel-dir load-path)
>>     ;; Add distel-dir to the end of load-path
>>     (setq load-path (append load-path (list distel-dir)))))
>>
>> (require 'distel)
>> (distel-setup)
>>
>> ;; Some Erlang customizations
>> (add-hook 'erlang-mode-hook
>> 	  (lambda ()
>> 	    ;; when starting an Erlang shell in Emacs, default in the node name
>> 	    (setq inferior-erlang-machine-options '("-sname" "emacs"))
>> 	    ;; add Erlang functions to an imenu menu
>> 	    (imenu-add-to-menubar "imenu")))
>>
>> ;; A number of the erlang-extended-mode key bindings are useful in the shell
>> too
>> (defconst distel-shell-keys
>>   '(("\C-\M-i"   erl-complete)
>>     ("\M-?"      erl-complete)	
>>     ("\M-."      erl-find-source-under-point)
>>     ("\M-,"      erl-find-source-unwind)
>>     ("\M-*"      erl-find-source-unwind)
>>     )
>>   "Additional keys to bind when in Erlang shell.")
>>
>> (add-hook 'erlang-shell-mode-hook
>> 	  (lambda ()
>> 	    ;; add some Distel bindings to the Erlang shell
>> 	    (dolist (spec distel-shell-keys)
>> 	      (define-key erlang-shell-mode-map (car spec) (cadr spec)))))
>>
>> When I open a .erl file, it works well and Distel dose exist in the Erlang
>> tag of the emacs' menubar. But when I type C-M-i behind the word "cr" to
>> complete the function name,the emacs received this message:
>>
>> Unexpected reply: [rex [badrpc [EXIT [undef ([distel rpc_entry (distel
>> modules ("cr"))] [rpc -handle_call/3-fun-0- 5])]]]]
>>
>> I checked the code in Distel, it looks like that it will call completions()
>> which will call the get() by the argument:A  an empty string("")  in
>> otp_doc.erl.  The function get() will call to_list() on the argument:A,which
>> will get the error:
>>
>> *** ERROR: Shell process terminated! ***
>>
>> =ERROR REPORT==== 8-Sep-2009::15:02:42 ===
>> Error in process <0.66.0> on node 'emacs@REDACTED' with exit value:
>> {undef,[{lib,format_exception,[4,error,undef,[{erl_internal,bif,[to_list,1]},{erl_lint,expr,3},{erl_lint,exprs,3},{erl_lint,exprs_opt,3},{erl_eval,check_command,2},{shell,exprs,6},{shell,eval_exprs,6},{shell,eval_loop..
>>
>> I guess this is the reason for the completion failure, but have no idea how
>> to fix it. Can anyone here give me some advice?
>>
>> As a newbie in Erlang, it's very possible I've stepped in the wrong
>> way.However, any suggestions will be appreciated.
>>
>> Thanks in advance.
>>
>> Eric
>>
>>
>>
>>     

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