Andrew Hodgkinson
2006-Jul-06 23:20 UTC
[Rails] URI.escape() broken or misdocumented in Ruby 1.8.4
URI.escape() is supposed to be able to take a second parameter listing unsafe characters in the URI. This may be a regexp or string. If a string, it''s supposed to represent a character set listing all unsafe characters. An example given in the core documentation at: http://www.ruby-doc.org/stdlib/libdoc/uri/rdoc/classes/URI/Escape.html#M008992 ...is: p URI.escape("@?@!", "!?") # => "@%3F@%21" Unfortunately this doesn''t work. It seems that the string does not represent a character set to match any more, but a literal string to find - thus the following result is actually seen: p URI.escape("@?@!", "!?") # => "@?@!" p URI.escape("@?@!", "@?") # => "%40%3F@!" Matching strings in this way is thoroughly bizarre as highlighted by the above example; "@" is being escaped for the substring "@?" but not for the substring "@!". The way to get the documented style of substitution is rather clumsy; one must manually construct the character set: p URI.escape("@?@!", Regexp.new("[!?]")) # => "@%3F@%21" I was going to update the documentation Wiki to mention the differing behaviour in Ruby 1.8.4 by clicking on the link given at the bottom of the page, which goes to: http://www.ruby-doc.org/stdlib/libdoc/uri/rdoc/classes/URI/Escape.html#M008992 ...but this gives a blank page. In fact the whole Wiki seems to be a bit broken, with little documentation actually apparently existing and the search engine failing to find anything at all under "URI". Am I missing something here? -- Posted via http://www.ruby-forum.com/.
Andrew Hodgkinson
2006-Jul-06 23:22 UTC
[Rails] Re: URI.escape() broken or misdocumented in Ruby 1.8.4
Andrew Hodgkinson wrote:> http://www.ruby-doc.org/stdlib/libdoc/uri/rdoc/classes/URI/Escape.html#M008992The second time that appeared, it should of course have read: http://www.ruby-doc.org/ru/wiki/index.rb/Core/URI::Escape -- Posted via http://www.ruby-forum.com/.
Andrew Hodgkinson
2006-Jul-07 18:19 UTC
[Rails] Re: URI.escape() broken or misdocumented in Ruby 1.8.4
For the sake of searchable archives, further information can be found on the Ruby list; see: http://www.ruby-forum.com/topic/72072 -- Posted via http://www.ruby-forum.com/.
Kevin Olbrich
2006-Jul-07 18:47 UTC
[Rails] URI.escape() broken or misdocumented in Ruby 1.8.4
> p URI.escape("@?@!", Regexp.new("[!?]")) > # => "@%3F@%21"p URI.escape("@?@!", /[!?]/) #=> "@%3F@%21" It may be misdocumented, but why would you use anything other than a Regexp here? _Kevin -- Posted with http://DevLists.com. Sign up and save your mailbox.