Bug #2020: ARGF.lineno and $. give inconsistent results

• Status: Closed
• Assignee: -
• ruby -v: ruby 1.9.1p243 (2009-07-16 revision 24175) [i386-darwin9.7.1]

[telemachus (Peter Aronoff)]

=begin
When using ARGF on Ruby 1.9.1 (rev. 24175), ARGF.lineno gives a result of '0' for all lines. $. works as expected.

This script shows the problem:

#!/usr/bin/env ruby -w

ARGF.each do |line|
print "With [lineno]:\t"
print ARGF.lineno, ': ', line
print "With [$.]:\t"
print $., ': ', line
end

If I run this with Ruby 1.8.6 (OS X's system Ruby), the output from $. and ARGF.lineno is identical. With 1.9.1, I get this:

telemachus ~ $ ./cat.rb test.txt
With [lineno]: 0: This is line one.
With [$.]: 1: This is line one.
With [lineno]: 0: Here is line two.
With [$.]: 2: Here is line two.
With [lineno]: 0: A third line for fun.
With [$.]: 3: A third line for fun.

Thanks, T
=end

[znz (Kazuhiro NISHIYAMA)]

• File argf-lineno.diff argf-lineno.diff added
• Category set to core

=begin
I reproduced on ruby 1.9.2dev (2010-01-22 trunk 26370) [x86_64-linux] too.
And I think an attached patch fixes the problem on trunk.

=end

[marcandre (Marc-Andre Lafortune)]

• Status changed from Open to Closed

=begin
Patch applied in r27308
Peter, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.
=end