Feature #4148

Time#strftime with %T broken on Windows

Added by metakeule (Marc Rene Arns) over 1 year ago. Updated about 1 year ago.

[ruby-core:33664]
Status:Open Start date:12/10/2010
Priority:Normal Due date:
Assignee:- % Done:

0%
Category:core
Target version:Ruby 1.8.8

Description

On unix:

Time.now.strftime('%T') #=> "15:33:03"
Time.now.strftime('%Y') #=> "2010"
Time.now.strftime('%Y %T') #=> "2010 15:33:03"
Time.now.strftime('%H:%M:%S') #=> "15:33:03"

On Windows 7 (64bit) (ruby 1.8.7, patchlevel 249 i386-mingw32):
Time.now.strftime('%T') #=> ""
Time.now.strftime('%Y') #=> "2010"
Time.now.strftime('%Y %T') #=> ""
Time.now.strftime('%H:%M:%S') #=> "15:33:03"

So if %T is included in the string, everything breaks and "" is returned.
I guess that problem might also exist on other windows plattforms.
Since '%H:%M:%S' works it could be used instead, but some libraries, e.g. Rack::Session::Cookie use '%T' which leads to subtile bugs (e.g. Expire-Date for Cookies not set).

I haven't tested with ruby 1.9 maybe, this bug also exists there.

History

#1
Updated by metakeule (Marc Rene Arns) over 1 year ago

A quick scan through my gems directory revealed the following places where strftime is used with %T.
Maybe someone has interest to inform the maintainers about the quickfix (I created a ticked for rack already):

./gems/1.8/gems/pg-0.9.0/Rakefile:      artifact_dir = ARTIFACTS_DIR.cleanpath + (CC_BUILD_LABEL || Time.now.strftime('%Y%m%d-%T'))
./gems/1.8/gems/rmagick-2.13.1/ext/RMagick/extconf.rb:#{DateTime.now.strftime("%a %d%b%y %T")}
./gems/1.8/gems/rack-1.2.1/lib/rack/utils.rb:      time.strftime("#{wday}, %d-#{mon}-%Y %T GMT")
./gems/1.8/gems/json_pure-1.4.6/tools/server.rb:      "TIME" => Time.now.strftime("%FT%T"),
./gems/1.8/gems/json-1.4.6/tools/server.rb:      "TIME" => Time.now.strftime("%FT%T"),
./site_ruby/1.8/pkgtools.rb:  str_time += Time.at(time).utc.strftime("%T")

#2
Updated by metakeule (Marc Rene Arns) over 1 year ago

I am sorry, I should have reported this to ruby18 instead of Backport 87 (thought that it would mean 1.8.7)
Perhaps someone could move the ticket to the correct place. sorry for the hassle...

#3
Updated by shyouhei (Shyouhei Urabe) over 1 year ago

  • ruby -v set to "Windows 7 (64bit) (ruby 1.8.7, patchlevel 249 i386-mingw32)"
moved.

#4
Updated by RvdBerg (René van den Berg) over 1 year ago

The same thing seems to happen if the format string *includes* %P (only the uppercase P). Ruby -v output:
ruby 1.8.7 (2010-01-10 patchlevel 249) [i386-mingw32]. Also confirmed on 1.8.6 (uninstalled now, not sure what the patchlevel was).

#5
Updated by usa (Usaku NAKAMURA) over 1 year ago

  • Category set to core
  • Target version set to Ruby 1.8.8
The document clearly shows the supported specifiers of Time#strftime.
See it's rdoc.

So, this is not bug but feature request.

# FYI: ruby 1.9 supports %T and %P, of course on Windows

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