Revert "IRB is improved with Reline and RDoc"

This reverts commit 7f273ac6d0f05208b5b228da95205e20c0e8286c.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/irb.rb b/lib/irb.rb
index cfe514b786..78d0b7c8cf 100644
--- a/lib/irb.rb
+++ b/lib/irb.rb
@@ -73,6 +73,7 @@ require "irb/version"
 #     --back-trace-limit n
 #                       Display backtrace top n and tail n. The default
 #                       value is 16.
+#     --irb_debug n     Set internal debug level to n (not for popular use)
 #     -v, --version     Print the version of irb
 #
 # == Configuration
@@ -100,6 +101,7 @@ require "irb/version"
 #     IRB.conf[:IGNORE_EOF] = false
 #     IRB.conf[:PROMPT_MODE] = :DEFAULT
 #     IRB.conf[:PROMPT] = {...}
+#     IRB.conf[:DEBUG_LEVEL]=0
 #
 # === Auto indentation
 #
@@ -408,7 +410,9 @@ module IRB
       @context = Context.new(self, workspace, input_method, output_method)
       @context.main.extend ExtendCommandBundle
       @signal_status = :IN_IRB
+
       @scanner = RubyLex.new
+      @scanner.exception_on_syntax_error = false
     end
 
     def run(conf = IRB.conf)