[#44786] [ruby-trunk - Feature #2565] adding hooks for better tracing — "tenderlovemaking (Aaron Patterson)" <aaron@...>
8 messages
2012/05/01
[#44788] Re: [ruby-trunk - Feature #2565] adding hooks for better tracing
— SASADA Koichi <ko1@...>
2012/05/02
(2012/05/02 8:25), tenderlovemaking (Aaron Patterson) wrote:
[#44789] Re: [ruby-trunk - Feature #2565] adding hooks for better tracing
— SASADA Koichi <ko1@...>
2012/05/02
(2012/05/02 8:25), tenderlovemaking (Aaron Patterson) wrote:
[#44911] [ruby-trunk - Bug #6408][Open] DelegateClass#eql? and <=> don't work as expected — "tenderlovemaking (Aaron Patterson)" <aaron@...>
11 messages
2012/05/06
[#44951] [ruby-trunk - Feature #6414][Open] Destructuring Assignment — "edtsech (Edward Tsech)" <edtsech@...>
14 messages
2012/05/08
[#45001] [ruby-trunk - Bug #6425][Open] Psych issue with !!omap — "trans (Thomas Sawyer)" <transfire@...>
5 messages
2012/05/11
[#45009] [ruby-trunk - Bug #6427][Open] ruby ioctl: Error integer 2148012656 too big to convert to `int' — "hadmut (Hadmut Danisch)" <hadmut@...>
5 messages
2012/05/12
[#45014] [Backport93 - Backport #6429][Assigned] Backport r35631 - [mingw] Errno::EBADF in ruby/test_io.rb on ruby_1_9_3 — "luislavena (Luis Lavena)" <luislavena@...>
3 messages
2012/05/12
[#45015] Re: [ruby-changes:23580] luislavena:r35631 (trunk): * test/ruby/test_io.rb (class TestIO): Disable GC during IO tests to — Tanaka Akira <akr@...>
2012/5/13 luislavena <ko1@atdot.net>:
3 messages
2012/05/12
[#45035] [ruby-trunk - Bug #6433][Open] rb_thread_blocking_region(): ubf() function is executed with GVL — ibc (Iñaki Baz Castillo) <ibc@...>
12 messages
2012/05/14
[#45062] [ruby-trunk - Bug #6436][Open] Byte counting incorrect in BufferedIO (net/protocol.rb) — "jcast (Jeremie Castagna)" <jeremie.castagna@...>
6 messages
2012/05/15
[#45073] [PATCH] Ruby's port to NativeClient — Yuki Yugui Sonoda <yugui@...>
Hello Matz and rubyists,
9 messages
2012/05/16
[#45074] Re: [PATCH] Ruby's port to NativeClient
— SASADA Koichi <ko1@...>
2012/05/16
(2012/05/16 12:34), Yuki Yugui Sonoda wrote:
[#45075] Re: [PATCH] Ruby's port to NativeClient
— Yuki Yugui Sonoda <yugui@...>
2012/05/16
On Wed, May 16, 2012 at 12:43 PM, SASADA Koichi <ko1@atdot.net> wrote:
[#45102] ruby-mode maintainer? — Stefan Monnier <monnier@...>
Could the ruby-mode maintainer(s) contact me off-list?
6 messages
2012/05/17
[#45151] Re: ruby-mode maintainer?
— "NARUSE, Yui" <naruse@...>
2012/05/20
(2012/05/17 10:06), Stefan Monnier wrote:
[#45132] [ruby-trunk - Bug #6454][Open] Anonymous classes should delete tmp_classpath on dup — "tenderlovemaking (Aaron Patterson)" <aaron@...>
5 messages
2012/05/18
[#45176] [ruby-trunk - Bug #6476][Open] Proc unrolls an array even without splat — "prijutme4ty (Ilya Vorontsov)" <prijutme4ty@...>
3 messages
2012/05/22
[#45193] [ruby-trunk - Feature #6482][Open] Add URI requested to Net::HTTP request and response objects — "drbrain (Eric Hodel)" <drbrain@...7.net>
16 messages
2012/05/23
[#45268] [ruby-trunk - Feature #6482] Add URI requested to Net::HTTP request and response objects
— "mame (Yusuke Endoh)" <mame@...>
2012/05/26
[#45222] [ruby-trunk - Feature #6492][Open] Inflate all HTTP Content-Encoding: deflate, gzip, x-gzip responses by default — "drbrain (Eric Hodel)" <drbrain@...7.net>
23 messages
2012/05/24
[#45528] Re: [ruby-trunk - Feature #6492][Open] Inflate all HTTP Content-Encoding: deflate, gzip, x-gzip responses by default
— Eric Wong <normalperson@...>
2012/06/09
"drbrain (Eric Hodel)" <drbrain@segment7.net> wrote:
[#45253] [RFC] RubyVM::FrameInfo.caller method — SASADA Koichi <ko1@...>
Hi,
11 messages
2012/05/26
[#45302] Re: [RFC] RubyVM::FrameInfo.caller method
— Dice <tetradice@...>
2012/05/28
Hello.
[#45269] [ruby-trunk - Bug #6501][Open] Documentation for Exception#set_backtrace is incorrect — "djberg96 (Daniel Berger)" <redmine@...>
3 messages
2012/05/26
[#45272] [ruby-trunk - Feature #6503][Open] Support for the NPN extension to TLS/SSL — "igrigorik (Ilya Grigorik)" <ilya@...>
13 messages
2012/05/27
[ruby-core:45153] Re: [ruby-trunk - Bug #6474][Open] Substitution bug in String # gsub
From:
Mike Stok <mike@...>
Date:
2012-05-20 13:42:17 UTC
List:
ruby-core #45153
Maybe you are bing confused by the way irb displays results as double quoted strings. If you explicitly use puts:
ratdog:~ mike$ irb
1.9.3-p125 :001 > s = 'a&b'
=> "a&b"
1.9.3-p125 :002 > puts s.gsub '&', '\&'
a&b
=> nil
1.9.3-p125 :003 > puts s.gsub '&', '\\&'
a&b
=> nil
1.9.3-p125 :004 > puts s.gsub '&', '\\\&'
a\&b
=> nil
1.9.3-p125 :005 > puts s.gsub '&', '\\\\&'
a\&b
=> nil
I like using a block to make this situation less full of backslashes e.g.
1.9.3-p125 :006 > puts s.gsub('&') { '\&' }
a\&b
To see the way irb displays strings consider:
1.9.3-p125 :008 > s = 'a\&b'
=> "a\\&b"
1.9.3-p125 :009 > puts s
a\&b
=> nil
1.9.3-p125 :010 > puts s.length
4
=> nil
1.9.3-p125 :011 > s = "a\tb"
=> "a\tb"
1.9.3-p125 :012 > puts s
a b
=> nil
Hope this helps,
Mike
On 2012-05-20, at 9:19 AM, hadmut (Hadmut Danisch) wrote:
>
> Issue #6474 has been reported by hadmut (Hadmut Danisch).
>
> ----------------------------------------
> Bug #6474: Substitution bug in String # gsub
> https://bugs.ruby-lang.org/issues/6474
>
> Author: hadmut (Hadmut Danisch)
> Status: Open
> Priority: Normal
> Assignee:
> Category:
> Target version:
> ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]
>
>
> Hi,
>
> I need to replace all occurences of & with \& in a String (generating LaTeX input).
>
> However, gsub has a problem with unescaping the \ character in the replacement string:
>
> irb(main):001:0> "a&b"
> => "a&b"
> irb(main):002:0> "a&b".gsub('&','\&')
> => "a&b"
> irb(main):003:0> "a&b".gsub('&','\\&')
> => "a&b"
> irb(main):004:0> "a&b".gsub('&','\\\&')
> => "a\\&b"
> irb(main):005:0> "a&b".gsub('&','\\\\&')
> => "a\\&b"
>
> So it always inserts either zero or two \ characters, but never a single one. Not possible to generate "a\&b"
>
>
> regards
>
>
>
>
> --
> http://bugs.ruby-lang.org/
--
Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/
The "`Stok' disclaimers" apply.