find . \( -name '*.h' -o -name '*.c' \) -exec sed -i 'N;/^\n$/D;P;D;' {} \;

https://bugzilla.gnome.org/show_bug.cgi?id=662895

upstream commit:
https://gitlab.gnome.org/GNOME/metacity/commit/6836a621

The style context of the widget is rarely what we want. We won't
fix this to be a MetaFrames style context yet; this just changes
the internal API.

https://bugzilla.gnome.org/show_bug.cgi?id=690317

upstream commit:
https://gitlab.gnome.org/GNOME/metacity/commit/76aa0704

There were actually *two* MetaFrameGeometry structs: one in theme-private.h,
one in frame.h. The latter public struct was populated by a mix of (void*)
casting and int pointers, usually pulling directly from the data in the private
struct.

Remove the public struct, replace it with MetaFrameBorders and scrap all
the pointer hacks to populate it, instead relying on both structs being used
in common code.

This commit should be relatively straightforward, and it should not do any
tricky logic at all, just a sophisticated find and replace.

https://bugzilla.gnome.org/show_bug.cgi?id=644930

upstream commit: https://gitlab.gnome.org/GNOME/metacity/commit/72224a165
NOTE: Patch copied from metacity and adapted for marco.

origin commit by:
https://gitlab.gnome.org/GNOME/metacity/commit/542a2b4

Add a new frame type META_FRAME_TYPE_ATTACHED which is used for
attached modal dialogs.

The theme format version is bumped to 3.2, and attached windows
can have borders defined in a metacity-theme-3.xml as:

 <window version=">= 3.2" type="attached" style_set="[name]"/>

If no style is defined for "attached", drawing will fall back
to the "border" type.

https://bugzilla.gnome.org/show_bug.cgi?id=592382

NOTE: Patch copied from mutter and adapted for metacity.