When debugging a program or testing a change to an installed version, it
is often useful to be able to replace resources in the program or a
library, without recompiling.
To support this, for debugging and hacking purposes, it's now possible
to define a G_RESOURCE_OVERLAYS environment variable as a
colon-separated list of substitutions to perform when looking up
GResources.
A substitution has the form
"/org/gtk/libgtk=/home/desrt/gtk-overlay"
The part before the '=' is the resource subpath for which the overlay
applies. The part after is a filesystem path which contains files and
subdirectories as you would like to be loaded as resources with the
equivalent names.
In the example above, if an application tried to load a resource with
the resource path '/org/gtk/libgtk/ui/gtkdialog.ui' then GResource would
check the filesystem path '/home/desrt/gtk-overlay/ui/gtkdialog.ui'. If
a file was found there, it would be used instead.
Substitutions must start with a slash, and must not have a trailing
slash before the '='. It is possible to overlay the location of a
single resource with an individual file.
https://bugzilla.gnome.org/show_bug.cgi?id=765668
Replace the hand-written equivalent of this with the call to the
GHashTable built-in version to save a few lines of code.
The GResource code was written a couple of years before this function
existed.
Similarly, replace a set-mode usage of g_hash_table_insert() with a call
to g_hash_table_add().
https://bugzilla.gnome.org/show_bug.cgi?id=765668
GContextSpecificGroup has been somewhat broken for a rather long time:
when we remove the last reference on an object held in the group, we try
to clean up the source, but fail to actually remove it from the
mainloop.
We will soon stop emitting signals on the source (due to it having been
removed from the hash table) but any "in flight" signals will still be
delivered on the source, which continues to exist. This is a problem if
the event is being delivered just as the object is being destroyed.
This also means that we leave the source attached to the mainloop
forever (and next time will create a new one)...
This is demonstrated with the GtkAppChooser dialog which writes an
update to the mimeapps.list file just as it is closing, triggering the
app info monitor to fire just as it is being destroyed.
Karl Tomlinson correctly analysed the problem and proposed this fix.
https://bugzilla.gnome.org/show_bug.cgi?id=762994
GApplication has accepted any valid bus name as an application ID since
before the time of D-Bus activation. This includes bus names with '-'.
Several applications have even attempted support bus activation with
these names, going as far as installing D-Bus service files, without
realising that they are silently falling back to fork()/exec() on
account of the name containing a dash.
The reason for the problem is that D-Bus object paths cannot contain
dashes. We solved this problem privately in an unspecified way inside
of GApplication but substituting '_' in this case, but never made this
part of the Desktop Entry Specification.
The fact that these apps with '-' in the desktop file names aren't
actually using D-Bus activation is beside the point: their intent here
was clear. Let's avoid forcing them to rename their desktop files again
by simply accepting '-' in desktop file names and munging the path in
the way that GApplication did so historically.
The new path escaping code here has been copied more or less verbatim
from GApplication's own code for the same purpose, with only the removal
of one irrelevant part.
An update to the desktop entry specification will follow.
https://bugzilla.gnome.org/show_bug.cgi?id=764754
This was confusing some static analysis. Through canonicalize_filename()
at construction time, we guaranteed that ->filename is canonical and
absolute, so g_path_skip_root() should never fail.
https://bugzilla.gnome.org/show_bug.cgi?id=731988
This ensures that the generated file is always the same (not dependent
on the build machine's environment), making the build reproducible.
Thanks to Jérémy Bobbio <lunar@debian.org> for the Debian bug report and
patch.
https://bugzilla.gnome.org/show_bug.cgi?id=763617
Even though GetStartupInfo() in g_win32_run_session_bus() would
tell us that STARTF_FORCEONFEEDBACK flag is not set, it still
affects the rundll32 process for some reason.
This means that Windows WM changes mouse cursor to IDC_APPSTARTING for
a few seconds when rundll32 runs g_win32_run_session_bus(). Since
g_win32_run_session_bus() never satisfies the conditions set by
STARTF_FORCEONFEEDBACK, the busy cursor only goes away after a
timeout.
Fix this by explicitly running GetMessage(). To ensure that GetMessage()
doesn't block, post a quit message immediately before calling it.
https://bugzilla.gnome.org/show_bug.cgi?id=760694
Some applications support running in a mode where they present
themselves as a different application to the user (for example web
browsers or terminals).
To facilitate this, add an option --gapplication-app-id which allows
users to override an application's id from desktop files or similar.
Applications need to opt-in to this by setting the
G_APPLICATION_CAN_OVERRIDE_APP_ID flag.
https://bugzilla.gnome.org/show_bug.cgi?id=743933
currently schema_list will iterate over the default SchemaSource
list, and not the one associated with the passed in Schema. This
means schema_list can give incorrect results for a Schema fetched
from a non-default SchemaSource, like via new_from_directory.
https://bugzilla.gnome.org/show_bug.cgi?id=757506
Perform conversion before writing a value out of the cache into the registry,
and convert back when reading a value into the cache out of the registry.
The registry holds UTF-8 strings.
