From e49f890906507b49ac81328e1e7b68d2fea59226 Mon Sep 17 00:00:00 2001
From: kouji <kouji@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 21 Jun 2011 04:30:14 +0000
Subject: * ext/readline/readline.c (readline_getc): applied a patch in   #3827
 by by Akio Tajima <artonx AT yahoo.co.jp>. (see #3827)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32181 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/readline/readline.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'ext/readline')

diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index c08d88b4f3..65c0c412d0 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -131,6 +131,34 @@ readline_getc(FILE *input)
     if (!readline_instream) return rl_getc(input);
     GetOpenFile(readline_instream, ifp);
     if (rl_instream != ifp->stdio_file) return rl_getc(input);
+#if defined(_WIN32)
+    {
+        INPUT_RECORD ir;
+        int n;
+        static int prior_key = '0';
+        for (;;) {
+            if (prior_key > 0xff) {
+                prior_key = rl_getc(ifp->stdio_file);
+                return prior_key;
+            }
+            if (PeekConsoleInput((HANDLE)_get_osfhandle(ifp->fd), &ir, 1, &n)) {
+                if (n == 1) {
+                    if (ir.EventType == KEY_EVENT && ir.Event.KeyEvent.bKeyDown) {
+                        prior_key = rl_getc(ifp->stdio_file);
+                        return prior_key;
+                    } else {
+                        ReadConsoleInput((HANDLE)_get_osfhandle(ifp->fd), &ir, 1, &n);
+                    }
+                } else {
+                    HANDLE h = (HANDLE)_get_osfhandle(ifp->fd);
+                    rb_w32_wait_events(&h, 1, INFINITE);
+                }
+            } else {
+                break;
+            }
+        }
+    }
+#endif    
     c = rb_funcall(readline_instream, id_getbyte, 0, 0);
     if (NIL_P(c)) return EOF;
     return NUM2CHR(c);
-- 
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