From: Yusuke ENDOH <mame@...>
Date: 2010-01-29T01:51:33+09:00
Subject: [ruby-core:27930] [Bug:trunk] some behavior changes of lib/csv.rb between 1.8 and 1.9

Hi jeg2, or anyone who knows the implementation of FasterCSV,

I'm now checking for ruby trunk to pass rubyspec.  Are these behavior
changes of lib/csv.rb intended or bug?


1) CSV.generate

 $ ruby18 -rcsv -e 'w = CSV.generate("foo18.csv"); w << [1, 2, 3]; w.close'
 $ cat foo18.csv
 1,2,3

 $ ruby19 -rcsv -e 'w = CSV.generate("foo19.csv"); w << [1, 2, 3]; w.close'
 /home/mame/work/ruby19/local/lib/ruby/1.9.1/csv.rb:1231:in
`generate': no block given (yield) (LocalJumpError)
         from -e:1:in `<main>'

There is the comment of csv.rb:
> The old CSV's Reader and Writer classes have been dropped.
> CSV::generate() is different from the old method.
They mean this change, don't they?


2) CSV.generate_line

 $ ruby18 -rcsv -e 'p CSV.generate_line([])'
 ""

 $ ruby19 -rcsv -e 'p CSV.generate_line([])'
 "\n"


3) CSV.generate_line (2)

 $ ruby18 -rcsv -e 'p CSV::generate_line(["foo", "bar"], ?;)'
 "foo;bar"

 $ ruby19 -rcsv -e 'p CSV::generate_line(["foo", "bar"], ?;)'
 /home/mame/work/ruby19/local/lib/ruby/1.9.1/csv.rb:1249:in `merge':
can't convert String into Hash (TypeError)
         from /home/mame/work/ruby19/local/lib/ruby/1.9.1/csv.rb:1249:in
`generate_line'
         from -e:1:in `<main>'


3) CSV.parse

 $ ruby18 -rcsv -ve 'p CSV.parse "\nfoo"'
 [[nil], ["foo"]]

 $ ruby19 -rcsv -ve 'p CSV.parse "\nfoo"'
 [[], ["foo"]]


4) CSV.parse_line

 $ ruby18 -rcsv -ve 'p CSV.parse_line ""'
 [nil]

 $ ruby19 -rcsv -ve 'p CSV.parse_line ""'
 nil


5) CSV.parse_line (2)

 $ ruby18 -rcsv -ve 'p CSV.parse_line "\nfoo"'
 [nil]

 $ ruby19 -rcsv -ve 'p CSV.parse_line "\nfoo"'
 []


Thanks,

--
Yusuke ENDOH <mame@tsg.ne.jp>