[ruby-core:44334] [ruby-trunk - Bug #6286] Add Exception#format method

Issue #6286 has been updated by vo.x (Vit Ondruch).

ruby -v set to ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-linux]

nobu (Nobuyoshi Nakada) wrote:
> Why and how would it be nice?


I'm trying to develop Ruby support for ABRT [1]. The idea is, that I will provide at_exit handler and in this handler, I need to report the backtrace. I'd like to report the same backtrace as Ruby reports when running from command line. Since the Exception cannot provide this format, I need to provide some custom functionality to get the backtrace formatted as Ruby does.

I am probably not the first one who needs it, otherwise the gem would not exist.

Thank you.


[1] https://fedorahosted.org/abrt/
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Bug #6286: Add Exception#format method
https://bugs.ruby-lang.org/issues/6286#change-25879

Author: vo.x (Vit Ondruch)
Status: Feedback
Priority: Normal
Assignee: 
Category: lib
Target version: 2.0.0
ruby -v: ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-linux]


It would be nice if Exception class could be extended by #format method (or method with some more suitable name), which would provide the same formatting as is standard output of Ruby exception, e.g. 

boomtest.rb:18:in `go': boom (RuntimeError)
  from boomtest.rb:34:in `foo'
  from boomtest.rb:36

Currently, this formatting is done by error_print function from eval_error.c. Unfortunately this method is just Ruby's internal.

Please note that there exists exception_string gem, which add similar method [1] to the Exception class.


[1] https://github.com/raggi/exception_string/blob/master/lib/exception_string.rb#L15-19


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