From: hemant kumar <gethemant@...>
Date: 2007-12-21T20:14:58+09:00
Subject: Problem with case statements

I have an innocent looking code:

54:    def find(*args)
55:      options = args.extract_options!
56:      validate_find_options(options)
57:      case args.first
58:      when :first: find_first(options)
59:      when :all: find_all(options)
60:      else raise "Invalid find"
61:      end
62:    end


Now, above case statement totally blows up with Ruby 1.9:

/home/hemant/push_server/lib/db_connection.rb:61: warning: else without
rescue is useless
/home/hemant/push_server/bin/boot.rb:34:in
`require': /home/hemant/push_server/lib/db_connection.rb:58: syntax
error, unexpected ':', expecting keyword_then or ',' or ';' or
'\n' (SyntaxError)
      when :first: find_first(options)
                  ^
/home/hemant/push_server/lib/db_connection.rb:59: syntax error,
unexpected keyword_when, expecting keyword_end
      when :all: find_all(options)
          ^
/home/hemant/push_server/lib/db_connection.rb:87: syntax error,
unexpected keyword_end, expecting $end
from /home/hemant/push_server/bin/boot.rb:34:in `<top (required)>'

However if i rewrite it like this, it works:

    def find(*args)
      options = args.extract_options!
      validate_find_options(options)
      case args.first
      when :first
        find_first(options)
      when :all
        find_all(options)
      else
        raise "Invalid find"
      end
    end

Why is this? Was this intended?