Document GTK_IM_MODULE.

x11/gtk+4/Makefile

@@ -7,6 +7,8 @@ COMMENT-guic=		gtk+ icon theme caching utility
 GNOME_PROJECT=		gtk
 GNOME_VERSION=		4.20.0
 
+REVISION-main=		0
+
 # gtk+4 wants librsvg 2.48+ (rust-only), but if not available it is prepared
 # to fallback to 2.40.23. there's no actual release of 2.40.23 yet, so use
 # a git-archive tar.gz to provide it for use by gtk's submodule build

x11/gtk+4/pkg/README-main

@@ -35,3 +35,12 @@ gtk-print-preview-command = epdfview %f
 Note that by default, gnome-papers and evince will remove the temporary PDF
 preview file (/tmp/previewXXXXXX.pdf) when done, that might not be the case with
 other PDF viewers.
+
+Input Method
+============
+
+By default, GTK4 relies on the Wayland text protocol for input method support.
+For compositors without that protocol, you can manually set
+    GTK_IM_MODULE=simple
+to get back support for X11-style compose sequences and dead keys.
+Note that some Desktop environments might already override GTK4 defaults.