* parse.y (parse_quotedwords): %w should allow parenthesis escape.

* parse.y (parse_qstring): %q should allow terminator escape.

* re.c (rb_reg_options): new method to give an option values.

* parse.y (cond0): disable special treating of integer literal in
  conditional unless option -e is supplied.  changes current
  behavior.  experimental.

* parse.y (cond0): give warning for string/integer literals and
  dot operators in conditionals unless option -e is supplied.

* re.c (rb_reg_equal): all option flags should be same to be equal.

* error.c (Init_Exception): make Interrupt a subclass of
  SignalException.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1167 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/importenv.rb

@@ -9,11 +9,12 @@
 
 for k,v in ENV
   next unless /^[a-zA-Z][_a-zA-Z0-9]*/ =~ k
+  v = v.gsub(/\\/) {|s| '\\'+s}
   eval <<EOS
-  $#{k} = %q!#{v}!
+  $#{k} = %q\0#{v}\0
   trace_var "$#{k}", proc{|v|
-    ENV[%q!#{k}!] = v; 
-    $#{k} = %q!#{v}!
+    ENV[%q!#{k}!] = v
+    $#{k} = v
     if v == nil
       untrace_var "$#{k}"
     end