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:P

(cherry picked from commit 66263604)

(cherry picked from commit 5a077649)

... only shows the color (and nothing else) when "Convert bitmaps to
vector graphics where possible" was set.

This is because gimp_drawable_histogram() only checks selected pixels.
So let's make sure we work on a duplicate of the image so that we can
safely remove the selection before processing the export.

In all themes, fix the color of selected text, while editing a
tree-view's item text (such as when renaming a layer), by
overriding tree-view specific styling with the global text-entry
style, for nested text entries inside tree-views.  The text would
previously use the same color as the selection background, making
it unreadable.

This issue affects the Dark and Gray themes, although this fix only
takes care of the Dark theme.

Gah :)
(cherry picked from commit 49375a3d)

(cherry picked from commit df4e35a8)

(cherry picked from commit baa8aadc)

Add devel-docs/performance-logs/performance-logs.md, which
describes how to record and view performance logs, and how to
report perofrmance-related issues.

(cherry picked from commit fa9161e4)

(cherry picked from commit 4dc45f96)

(cherry picked from commit 1c9775d7)

Blacklist the "threaded-ml" thread, which seems to mask the
backtrace signal.

Improve signal-handler synchronozation, to avoid segfaulting when
giving up on waiting for all threads to handle the signal.
Furthermore, when one or more threads fail to handle the signal in
time, return a GimpBacktrace instance with backtraces for all the
other threads, and with empty backtraces for all the non-responding
threads, instead of returning NULL and leaking the allocated
instance.  Don't blacklist threads that failed to handle the signal
in time, and instead shorten the wait period for handling the
signal, and yield execution during waiting to lower the CPU usage.

(cherry picked from commit a29d040d)

In sample-search predicates, remove the "exclusive" parameter of
the "function()" function, and replace it with optional "id" and
"state" parameters, which limit the match to the call-stacks of
matching threads, as per the "thread()" function.

Sort the backtrace thread-list by thread ID.

(cherry picked from commit 0b2d4163)

... which can be present in logs since last commit.

(cherry picked from commit fb95d3b8)

Fix delta-encoding of performance-log backtraces in certain cases,
and distinguish between empty call-stacks and removed threads.

(cherry picked from commit eec1e1f1)

Still hope for tonight! Will it happen?! :-)

(cherry picked from commit 2c4831f9)

Connect GimpImage's gimp:mask-components node to the layers node
*before* connecting the channels node, so that the image's
component mask doesn't affect the channel colors, as is the case in
2.8.

(cherry picked from commit 56920dcd)

In gimp_view_renderer_drawable_render(), make sure the preview size
is always at least 1x1.

Fixes commit 8009ea34.

(cherry picked from commit 963322fd)

In the preformance-log viewer, show instrumentation-variable
descriptions as tooltips for the corresponding treeview rows.

(cherry picked from commit 21b36cd8)

Include instrumentation-variable descriptions in the var-defs
section of performance logs, so that they can be displayed
alongside their names when viewing the log.

(cherry picked from commit 646208ef)

Simplify gimp_view_renderer_drawable_render(), by consolidating
common code paths.  In particular, when rendering the preview as
part of an image, always crop the preview to the bounds of the
image, even when downscaling, to avoid unnecessarily downscaling/
convering cropped-out regions.  We previously only did this when
upscaling the preview by a factor of 2 or more; whatever the reason
for this used to be, it's no longer there.

(cherry picked from commit 8009ea34)

In gimp_view_renderer_drawable_render(), avoid overflow in preview-
area calculation.  This prevents erroneously setting 'scaling_up'
to FALSE while upscaling the drawable by a very large amount, which
can lead to the creation of a very large GimpTempBuf for the
preview, causing memory allocation to fail.

(cherry picked from commit 0cdbe91e)

Add line data padding when necessary.
Additionally I realize we should convert to little-endian after checking
the bytesperline oddness (this bug was most likely unnoticed until now
as most desktop proc are little endian now anyway).

(cherry picked from commit 5d319b77)

file_save(): make sure we always set an error on failure

file_save_dialog_save_image(): additionally, check that "error" exists
before dereferencing it.

(cherry picked from commit c55f2308)

(cherry picked from commit 026fe766)

(cherry picked from commit bfcb7fc5)

In app/tests, add the show-tabs pref, added in commit
1ca2d744, to the expected sessionrc
files.

(cherry picked from commit 4113aaad)

... the second time you do a 180 degrees rotation

In gimp_transform_resize_adjust(), nudge the transformed layer
boundary by EPSILON toward the center, to avoid enlarging the layer
unnecessarily, as a result of numeric error amplified by rounding,
when the tranformed boundary should land on integer coordinates.
In particular, this avoids enlarging the layer when rotating by 180
degrees.

(cherry picked from commit c271992a)

...via hover tooltips

Use the GtkWidget::query_tooltip() signal on GimpFgBgEditor to emit an
own signal "tooltip" that has the hovered widget area as parameter.

Connect to GimpFgBgEditor::tooltip() in gimptoolbox-color-area.c and
set separate tooltips on the widget's areas, including the shortcuts
for "Swap colors" and "Default colors".

(cherry picked from commit ae9d84dd)