From d317851a7fd07f28890e6dc9bc2269da37c4122e Mon Sep 17 00:00:00 2001
From: Johannes Sixt <johannes.sixt@telecom.at>
Date: Tue, 23 Sep 2008 08:52:16 +0200
Subject: compat/mingw: Support a timeout in the poll emulation if no fds are
 given

Our poll() emulation did not support the timeout argument. With this patch
we support it for the simple case where poll() does not need to wait on
file descriptors as well because this case amounts to a mere Sleep().

This is needed if the user sets help.autocorrect is set to a positive
value.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/compat/mingw.c b/compat/mingw.c
index ccfa2a0..7eed60d 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -263,8 +263,13 @@ int poll(struct pollfd *ufds, unsigned int nfds, int timeout)
 {
 	int i, pending;
 
-	if (timeout != -1)
+	if (timeout >= 0) {
+		if (nfds == 0) {
+			Sleep(timeout);
+			return 0;
+		}
 		return errno = EINVAL, error("poll timeout not supported");
+	}
 
 	/* When there is only one fd to wait for, then we pretend that
 	 * input is available and let the actual wait happen when the
-- 
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