From 03ef8f3f342508771e5815c2c946339491de9071 Mon Sep 17 00:00:00 2001
From: stanton <stanton>
Date: Mon, 15 Jun 1998 19:09:09 +0000
Subject: added code to handle null arguments

---
 win/tclWinPipe.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/win/tclWinPipe.c b/win/tclWinPipe.c
index a7aeaf4..7e2e7bc 100644
--- a/win/tclWinPipe.c
+++ b/win/tclWinPipe.c
@@ -1561,13 +1561,19 @@ BuildCommandLine(argc, argv, linePtr)
 	}
 
 	quote = 0;
-	for (start = argv[i]; *start != '\0'; start++) {
-	    if (isspace(*start)) {
-		quote = 1;
-		Tcl_DStringAppend(linePtr, "\"", 1);
-    		break;
+	if (argv[i][0] == '\0') {
+	    quote = 1;
+	} else {
+	    for (start = argv[i]; *start != '\0'; start++) {
+		if (isspace(*start)) {
+		    quote = 1;
+		    break;
+		}
 	    }
 	}
+	if (quote) {
+	    Tcl_DStringAppend(linePtr, "\"", 1);
+	}
 
 	start = argv[i];	    
 	for (special = argv[i]; ; ) {
-- 
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