From 52584312c378add64bcda71c8c86ef48f4edc01d Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sun, 24 Feb 2019 01:00:06 +0100
Subject: [PATCH] delete the plt and data files after writing eps or png (only
 if gnuplot_terminal is set to eps/quit of png/quit)

---
 src/frontend/plotting/gnuplot.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/frontend/plotting/gnuplot.c b/src/frontend/plotting/gnuplot.c
index f6286dbc1..a3bd3ee74 100644
--- a/src/frontend/plotting/gnuplot.c
+++ b/src/frontend/plotting/gnuplot.c
@@ -16,7 +16,12 @@
 #include "ngspice/dvec.h"
 #include "ngspice/fteparse.h"
 #include "gnuplot.h"
-
+#if defined(__MINGW32__) || defined(_MSC_VER)
+#undef BOOLEAN
+#include <windows.h>
+#else
+#include <unistd.h.h>
+#endif
 
 #define GP_MAXVECTORS 64
 
@@ -338,6 +343,23 @@ ft_gnuplot(double *xlims, double *ylims, char *filename, char *title, char *xlab
 #endif
     err = system(buf);
 
+    /* delete the plt and data files */
+    if ((terminal_type == 3) || (terminal_type == 5)) {
+        /* wait for gnuplot generating eps or png file */
+#if defined(__MINGW32__) || defined(_MSC_VER)
+        Sleep(200);
+#else
+        usleep(200000);
+#endif
+        if (remove(filename_data)) {
+            fprintf(stderr, "Could not remove file %s\n", filename_data);
+            perror(NULL);
+        }
+        if (remove(filename_plt)) {
+            fprintf(stderr, "Could not remove file %s\n", filename_plt);
+            perror(NULL);
+        }
+    }
 }