From 311831ca4eb612bc2db0cc88249aa83f07292e3f Mon Sep 17 00:00:00 2001
From: t-bltg <tf.bltg@gmail.com>
Date: Sat, 22 Jan 2022 18:26:13 +0100
Subject: [PATCH] UnicodePlots: do not show blank plots (on layouts) (#4058)

---
 src/backends/unicodeplots.jl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/backends/unicodeplots.jl b/src/backends/unicodeplots.jl
index 2994acb4c..b1f4ee38b 100644
--- a/src/backends/unicodeplots.jl
+++ b/src/backends/unicodeplots.jl
@@ -19,6 +19,7 @@ const _canvas_map = (
 function unicodeplots_rebuild(plt::Plot{UnicodePlotsBackend})
     plt.o = UnicodePlots.Plot[]
 
+    has_layout = prod(size(plt.layout)) > 1
     for sp in plt.subplots
         xaxis = sp[:xaxis]
         yaxis = sp[:yaxis]
@@ -47,7 +48,9 @@ function unicodeplots_rebuild(plt::Plot{UnicodePlotsBackend})
             up_b
         end
 
-        width, height = UnicodePlots.DEFAULT_WIDTH[], UnicodePlots.DEFAULT_HEIGHT[]
+        # blank plots will not be shown
+        width = has_layout && isempty(series_list(sp)) ? 0 : UnicodePlots.DEFAULT_WIDTH[]
+        height = UnicodePlots.DEFAULT_HEIGHT[]
 
         grid = xaxis[:grid] && yaxis[:grid]
         quiver = contour = false