kazu	2017-02-04 15:49:07 +0900 (Sat, 04 Feb 2017)

  New Revision: 57530

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57530

  Log:
    sample/pty/shl.rb: update sample
    
    * Specify frozen_string_literal: true.
    * Fix TypeError of raise.
    * Use a character literal instead of Integer.

  Modified files:
    trunk/sample/pty/shl.rb
Index: sample/pty/shl.rb
===================================================================
--- sample/pty/shl.rb	(revision 57529)
+++ sample/pty/shl.rb	(revision 57530)
@@ -1,3 +1,4 @@ https://github.com/ruby/ruby/blob/trunk/sample/pty/shl.rb#L1
+# frozen_string_literal: true
 #
 #  old-fashioned 'shl' like program
 #  by A. Ito
@@ -22,15 +23,15 @@ def writer https://github.com/ruby/ruby/blob/trunk/sample/pty/shl.rb#L23
   begin
     while true
       c = STDIN.getc
-      if c == 26 then # C-z
-        $reader.raise(nil)
+      if c == ?\C-z then
+        $reader.raise('Suspend')
         return 'Suspend'
       end
       $w_pty.print c.chr
       $w_pty.flush
     end
   rescue
-    $reader.raise(nil)
+    $reader.raise('Exit')
     return 'Exit'
   ensure
     system "stty echo -raw"

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