[ruby/irb] Refactor exit command

(https://github.com/ruby/irb/pull/835)

* Remove unnecessary code from the exit command's implementation

1. The parameters of `IRB.irb_exit` were never used. But there are some
   libraries seem to call it with arguments + it's declared on the top-level
   IRB constant. So I changed the params to anonymous splat instead of removing them.
2. `Context#exit` was completely unnecessary as `IRB.irb_exit` doesn't use
   the `@irb` instance it passes. And since it's (or should be treated as)
   a private method, I simply removed it.
3. The `exit` command doesn't use the status argument it receives at all.
   But to avoid raising errors on usages like `exit 1`, I changed the argument to
   anonymous splat instead removing it.

* Make exit an actual command

* Update readme

https://github.com/ruby/irb/commit/452b543a65

1 files changed, 0 insertions, 8 deletions

diff --git a/lib/irb/context.rb b/lib/irb/context.rb
index c3690fcac7..10dab86179 100644
--- a/lib/irb/context.rb
+++ b/lib/irb/context.rb
@@ -573,14 +573,6 @@ module IRB
       @inspect_method.inspect_value(@last_value)
     end
 
-    alias __exit__ exit
-    # Exits the current session, see IRB.irb_exit
-    def exit(ret = 0)
-      IRB.irb_exit(@irb, ret)
-    rescue UncaughtThrowError
-      super
-    end
-
     NOPRINTING_IVARS = ["@last_value"] # :nodoc:
     NO_INSPECTING_IVARS = ["@irb", "@io"] # :nodoc:
     IDNAME_IVARS = ["@prompt_mode"] # :nodoc: