docs/reference/gtk/running: Incl GDK_DEBUG=portals

Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/5871

diff --git a/docs/reference/gtk/running.md b/docs/reference/gtk/running.md
index de7fb00b703182abd6a4fd547955d03a272fb923..b3931fdd390fe346045c57be6099a84c99df051d 100644 (file)
--- a/docs/reference/gtk/running.md
+++ b/docs/reference/gtk/running.md
@@ -208,6 +208,9 @@ A number of options affect behavior instead of logging:
 `nograbs`
 : Turn off all pointer and keyboard grabs
 
+`portals`
+: Force the use of [portals](https://docs.flatpak.org/en/latest/portals.html)
+
 `gl-disable`
 : Disable OpenGL support