added terminal plot support

2 files changed, 6 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 0894ce2..508c7de 100644
--- a/Makefile
+++ b/Makefile
@@ -8,6 +8,9 @@ ifneq ($(OS),Windows_NT)
 	T2LINKS = -lm -ldl
 	ifneq (, $(shell which gnuplot))
 		T2FLAGS += -DPIPE_GNUPLOT
+		ifeq (, ${DISPLAY})
+			T2FLAGS += -DTERMINAL_PLOT
+		endif
 	endif
 endif
 
diff --git a/main_23.c b/main_23.c
index f6936da..8460415 100644
--- a/main_23.c
+++ b/main_23.c
@@ -16,6 +16,9 @@ typedef double (*func_t)(double);
 	void pipe_gnuplot(struct dval *table, long len) {
 		FILE* gp = popen("gnuplot", "w");
 		if (!gp) return;
+#ifdef TERMINAL_PLOT
+		fputs("set terminal block\n", gp);
+#endif // TERMINAL_PLOT
 		fputs("plot '-' with lines\n", gp);
 		print_table(gp, table, len);
 		fputs("e\n", gp);