Change the graphics protocol N key from a boolean into a usage-hints
bitmask. Define the first bit as a transient hint, allowing the terminal
to treat the image data as short-lived and apply optimizations such as
skipping disk cache writes.
Propagate the transient hint through frame coalescing and composition, so
a composed frame is transient if any contributing frame is transient.
- Merge TestWatchForConfigChangesIncludeAdded and
TestWatchForConfigChangesIncludeRemoved into the main
TestWatchForConfigChanges function, which now starts the watcher
once and shares it across all integration subtests.
- Add prime_watcher helper that retries writes until an action fires,
replacing the blind time.Sleep(200ms) watcher-startup wait.
- Add new subtest "include added to already-included file adds its
parent dir": writes an include directive into sub/included.conf
(itself included from kitty.conf), then verifies that changes to
the newly referenced file trigger the action, confirming its parent
directory was added to the watch set.
- Fix TestWatchForConfigChangesDebounce to use prime_watcher instead
of time.Sleep for startup; capture before_burst baseline before the
burst loop so the burst-action count is computed correctly.
Add a new graphics protocol key, N=1, to request that transmitted
image/frame data is kept only in memory and not written to the graphics
disk cache file.
This is useful for transient high-frequency updates such as video-like
streams, where the latest frame is the only useful data and persisting
each frame to the disk cache causes unnecessary write traffic.
The implementation keeps the existing graphics cache abstraction intact:
memory-only entries can still be read back by animation, composition, and
frame coalescing paths. Only persistence to the disk cache file is skipped.
The default behavior is unchanged when N is omitted or set to zero.
When kitten --help is run in a terminal and less is not available,
ShowHelpInPager silently discards the error from pager.Run(), resulting
in no output and a zero exit code. Fall back to writing help text
directly to stdout when the pager fails, matching the behavior of the
Python equivalent in kitty/cli.py which catches FileNotFoundError and
prints the text as a fallback.
Signed-off-by: Xuyiyang23333 <xuyiyang23333@gmail.com>
