Thomas Sawyer wrote: > Has anyone ever endeavored to create a data/configuration file format > based on Ruby's syntax? In other words, a format like YAML but with a > Ruby-based syntax. Which bit of Ruby syntax are you thinking of? If you wanted key/value pairs in a Hash, then you might as well use JSON. It's not pretty for config files, but it's OK. If you wanted foo = 123 then that's hard to make work, although maybe you could frig it with binding and local_variables. You could instead use the Rails way: config.foo = 123 or use constants: module Config Foo = 123 end or globals: $foo = 123 The Sinatra way would be: set :foo, 123 set(:bar) { delayed_expr } Maybe what you're trying to do is foo 123 I don't see a particular problem with that, even with $SAFE=4 and method_missing: >> $h = {} => {} >> def method_missing(k,v); $h[k] = v; end => nil >> t = Thread.new { $SAFE=4; eval "foo 123" } => #<Thread:0x7f4eb7749a48 dead> >> t.join SecurityError: (irb):2:in `[]=': Insecure: can't modify hash from (irb):3 from (irb):4:in `join' from (irb):4 from :0 >> $h.taint => {} >> t = Thread.new { $SAFE=4; eval "foo 123" } => #<Thread:0x7f4eb7726930 dead> >> t.join => #<Thread:0x7f4eb7726930 dead> >> $h => {:foo=>123} This is using ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux] -- Posted via http://www.ruby-forum.com/.