From 4a26ea984756289dfc9e58617d295ff351839907 Mon Sep 17 00:00:00 2001
From: Jim Monte <jimmonte@users.sourceforge.net>
Date: Fri, 14 Jun 2019 23:01:59 +0200
Subject: [PATCH] [PATCH #64] Made shell command with no arguments functional
 for Windows.

---
 src/frontend/com_shell.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/frontend/com_shell.c b/src/frontend/com_shell.c
index 8452c73ab..fedf1cb19 100644
--- a/src/frontend/com_shell.c
+++ b/src/frontend/com_shell.c
@@ -10,16 +10,22 @@
 #include "ngspice/cpextern.h"
 
 
-/* Fork a shell. */
+#ifdef _WIN32
+#define SHELL "cmd /k"
+#else
+#define SHELL "/bin/csh"
+#endif
 
+/* Fork a shell. */
 void
 com_shell(wordlist *wl)
 {
     char *com, *shell = NULL;
 
     shell = getenv("SHELL");
-    if (shell == NULL)
-        shell = "/bin/csh";
+    if (shell == NULL) {
+        shell = SHELL;
+    }
 
     cp_ccon(FALSE);