Merge pull request matplotlib#17264 from anntzer/gtksave

Don't trigger save when gtk save dialog is closed by escape.

Author: QuLogic

lib/matplotlib/backends/backend_gtk3.py

@@ -570,7 +570,7 @@ def on_notify_filter(*args):
         ff = dialog.get_filter()  # Doesn't autoadjust to filename :/
         fmt = self.canvas.get_supported_filetypes_grouped()[ff.get_name()][0]
         dialog.destroy()
-        if response == Gtk.ResponseType.CANCEL:
+        if response != Gtk.ResponseType.OK:
             return
         # Save dir for next time, unless empty str (which means use cwd).
         if mpl.rcParams['savefig.directory']: