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_file_ and _line_ are not properly updated for rbx core methods #524

banister opened this Issue Apr 11, 2012 · 3 comments


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banister commented Apr 11, 2012

[12] (pry) main: 0> $ String#chop

From: kernel/common/string.rb @ line 482:
Number of lines: 4
Owner: String
Visibility: public

def chop
  str = dup
  str.chop! || str
[13] (pry) main: 0> cat #{_file_}
Error: Cannot open "/Users/john/ruby/projects/pry/kernel/common/string.rb" for reading.
[14] (pry) main: 0> 

redgetan commented Apr 13, 2012

Apparently a bug in rubinius' UnboundMethod#source_location method

On ruby-1.9.3-p125

1.9.3p125 :001 > require 'set'
=> true
1.9.3p125 :002 > Set.instance_method(:superset?).source_location
=> ["/Users/reg/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/set.rb", 190]

On rbx-1.2.4-20110705

rubinius-1.2.4 :001 > require 'set'
=> true
rubinius-1.2.4 :002 > Set.instance_method(:superset?).source_location
=> ["lib/set.rb", 163]

@banister banister closed this in 74d3d0d Apr 13, 2012


banister commented Apr 13, 2012

@redgetan cheers. The issue is that rbx truncates its stdlib/core file paths as they're not guaranteed to be distributed with the binary. However in most cases they will be (as rvm keeps source around and so does rbenv afaik) - so i reconstruct the actual path based on a few rules of thumb.


redgetan commented Apr 13, 2012

Ic. Interesting!

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