Bug #9244: unexpected behaviour of 'require' when $LOAD_PATH gets changed

• Status: Rejected
• Assignee: -
• Target version: -
• ruby -v: 1.9.3p484, 2.0.0p353, 2.1.2 2.1.6p336 2.2.1p85 2.3.1p112

[sylvain.joyeux (Sylvain Joyeux)]

For the purpose of reproducing the error, let's assume that I have two folders a and b which both contain a file test.rb

In the following script, b/test.rb will NOT get loaded:

 $LOAD_PATH.unshift File.join(Dir.pwd, 'a')
 require 'test.rb'
 $LOAD_PATH.unshift File.join(Dir.pwd, 'b')
 require 'test.rb'

I would have expected this behaviour before, when required files were not registered through their absolute paths in $LOADED_FEATURES. Right now, I find it confusing.

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

[sylvain.joyeux (Sylvain Joyeux)]

• ruby -v changed from 1.9.3p484, 2.0.0p353 to 1.9.3p484, 2.0.0p353, 2.1.2

Ping ? Still happening on ruby 2.1.2p95

[hsbt (Hiroshi SHIBATA)]

• Description updated (diff)
• Status changed from Open to Feedback

2.1.2 is too old version. Please try with Ruby 2.1.6

[byroot (Jean Boussier)]

• ruby -v changed from 1.9.3p484, 2.0.0p353, 2.1.2 to 1.9.3p484, 2.0.0p353, 2.1.2 2.1.6p336 2.2.1p85

$ ruby -v
ruby 2.1.6p336 (2015-04-13 revision 50298) [x86_64-darwin14.0]
$ cat test.rb 
 $LOAD_PATH.unshift File.join(Dir.pwd, 'a')
 require 'test.rb'
 $LOAD_PATH.unshift File.join(Dir.pwd, 'b')
 require 'test.rb'

$ ruby test.rb 
a

It's still a problem in 2.1.6, and 2.2.1 as well

[sylvain.joyeux (Sylvain Joyeux)]

• ruby -v changed from 1.9.3p484, 2.0.0p353, 2.1.2 2.1.6p336 2.2.1p85 to 1.9.3p484, 2.0.0p353, 2.1.2 2.1.6p336 2.2.1p85 2.3.1p112
• Backport deleted (1.9.3: UNKNOWN, 2.0.0: UNKNOWN)

and on 2.3.1

[matz (Yukihiro Matsumoto)]

• Status changed from Feedback to Rejected

I'd like to keep compatibility rather than reducing confusion slightly.
In any way, modifying $LOAD_PATH on the fly is not encouraged in modern Ruby.

Matz.