From c38cf1dd895899fd731fe93d8cb3e111e5edd92b Mon Sep 17 00:00:00 2001
From: t-bltg <tf.bltg@gmail.com>
Date: Wed, 8 Feb 2023 21:23:48 +0100
Subject: [PATCH] rework fallback

---
 ext/FileIOExt.jl | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/ext/FileIOExt.jl b/ext/FileIOExt.jl
index 9f5b0d671..a7dc56995 100644
--- a/ext/FileIOExt.jl
+++ b/ext/FileIOExt.jl
@@ -35,7 +35,19 @@ function _show_pdfbackends(io::IO, ::MIME"image/png", plt::Plot)
     write(io, read(open(pngfn), String))
 end
 
-Plots._show(io::IO, mime::MIME"image/png", plt::Plot{<:PDFBackends}) =
-    _show_pdfbackends(io, mime, plt)
+for be in (
+    Plots.PythonPlotBackend,
+    Plots.InspectDRBackend,
+    Plots.PGFPlotsXBackend,
+    Plots.PGFPlotsBackend,
+    Plots.PlotlyJSBackend,
+    Plots.PyPlotBackend,
+    Plots.GRBackend,
+)
+    if !showable(MIME"image/png"(), Plot{be})
+        @eval Plots._show(io::IO, mime::MIME"image/png", plt::Plot{$be}) =
+            _show_pdfbackends(io, mime, plt)
+    end
+end
 
 end  # module