Bug #174: [1.8.6] File.extname(".profile") is not returning an empty String

• Status: Closed
• Assignee: shyouhei (Shyouhei Urabe)
• Target version: -

[NoKarma (Arthur Schreiber)]

=begin
In the latest patchlevel versions of the ruby_1_8_6 branch, the File.extname method stopped returning empty Strings for files starting with a dot:

Latest version of the ruby_1_8 branch:
File.extname(".profile") # => ""

Latest version of the ruby_1_8_7 branch:
File.extname(".profile") # => ""

Latest version of the ruby_1_8_6 branch:
File.extname(".profile") # => ".profile"
=end

[shyouhei (Shyouhei Urabe)]

=begin
This is a Ruby 1.8.7 feature so who changed its behavior is 1.8.7,
rather than 1.8.6.
=end

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Closed

=begin
Not a bug.
=end

[NoKarma (Arthur Schreiber)]

=begin
That is definately a bug, as earlier Ruby 1.8.6 patchlevels showed
exactly the same behaviour as 1.8.7:

VERSION = 1.8.6-p111:

irb(main):001:0> File.extname(".profile")
=> ""

VERSION = 1.8.6-p114

irb(main):001:0> File.extname(".profile")
=> ""

VERSION = 1.8.6-p166

irb(main):001:0> File.extname(".profile")
=> ""

VERSION = 1.8.6-p222

irb(main):001:0> File.extname(".profile")
=> ".profile"

VERSION = 1.8.7-p17

irb(main):001:0> File.extname(".profile")
=> ""

VERSION = 1.8.7-p7

irb(main):001:0> File.extname(".profile")
=> ""

VERSION = 1.8.7

irb(main):001:0> File.extname(".profile")
=> ""

=end

[shyouhei (Shyouhei Urabe)]

=begin
Ah, sorry I was wrong.

I've backported corresponding patch from 1.8 branch. Thank you pointing this out.
=end