diff -r afd63357a03d -r e83ec58cc458 sources/interface.cpp
--- a/sources/interface.cpp	Wed Jan 27 14:06:45 2021 +0200
+++ b/sources/interface.cpp	Wed Jan 27 14:16:58 2021 +0200
@@ -179,8 +179,8 @@
 		int defaultBg = hasDefaultColors ? -1 : COLOR_BLACK;
 
 		// Initialize color pairs
-		for (int i : range<int>(NUM_COLORS))
-		for (int j : range<int>(NUM_COLORS))
+		for (int i = 0; i < NUM_COLORS; i += 1)
+		for (int j = 0; j < NUM_COLORS; j += 1)
 		{
 			int pairnum = 1 + (i * NUM_COLORS + j);
 			int fg =(i == DEFAULT) ? defaultFg : i;
@@ -360,13 +360,13 @@
 	assert(start <= end and start - end <= height);
 
 	// Clear the display
-	for (int i : range(height))
+	for (int i = 0; i < height; i += 1)
 		mvhline(y + i, 0, ' ', width);
 
 	// Print the lines
 	y += printOffset;
 
-	for (int i : range(start, end))
+	for (int i = start; i < end; i += 1)
 		y = renderColorline(y, 0, width, m_outputLines[i], true);
 
 	m_needOutputRender = false;
@@ -385,7 +385,7 @@
 	if (width > 0)
 		return;
 
-	for (int i : range(height))
+	for (int i = 0; i < height; i += 1)
 	{
 		mvhline(y, x, ' ', width);