This is in reference to issue #904. In said issue it was mentioned that
this should be a `-L` flag because it was ostensibly an extension of the
`-l` flag. Felt `-e` was more intention revealing.
And implement play and save-file using the new delegator. 'gist' still needs
to be re-implemented using CodeCollector.
************
TODO:
**************
Couldn't write a test for `play --lines 4..5` with implied target.eval("__FILE__") parameter,
need to come up with a decent test.
* removed most historicla junk from lib/pry/test/helper.rb
* relocated recalcitrant junk to the local spec/helper.rb (this isn't exposed to 3rd parties)
`play 69` is a shortcut for `play --file #{_file_} --lines 69`. It plays
lines from the current file. Example (I omitted some useless
information):
pry(main)> show-source hello
def hello
binding.pry
true
puts "hi"
69
end
pry(main)> hello
1: def hello
=> 2: binding.pry
3: true
4: puts "hi"
5: 69
6: end
pry(main)> play 5
=> 69
pry(main)> play 3..4
hi
=> nil
pry(main)>
Signed-off-by: Kyrylo Silin <kyrylosilin@gmail.com>
