From: Nikolai Weibull <now@...>
Date: 2011-07-12T18:14:55+09:00
Subject: [ruby-core:38019] [Ruby 1.9 - Feature #5016] Kernel#caller with negative limit should limit result to N initial frames


Issue #5016 has been updated by Nikolai Weibull.


I wouldn���t say ���dup���, but it���s certainly related.  This interface can be used instead of adding Kernel#called_from, if we want to keep the number of methods down.  Also, even if we objectify the backtrace as per #1906 that still doesn���t mean that we shouldn���t have the limit as per this feature request.
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Feature #5016: Kernel#caller with negative limit should limit result to N initial frames
http://redmine.ruby-lang.org/issues/5016

Author: Nikolai Weibull
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 1.9.x


Calling Kernel#caller with a negative limit should limit result to N initial frames.  When using Kernel#caller you often only want the first element of the result to get the information of the immediate caller.  Generating the whole backtrace in this case is wasteful and time-consuming.  Allowing Kernel#caller to take a negative limit to only return the first -N initial stack frames would allow for this.


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