* doc/emacs/haiku.texi (Haiku Basics): Document how X resources
are discovered on Haiku.
* src/haiku_support.cc (class Emacs): Load settings file.
(be_find_setting): New function.
* src/haiku_support.h (be_find_setting): New prototype.
* src/haikuterm.c (get_string_resource): Look in the settings
file if there's nothing in the in-memory resource database.
* lisp/files.el (save-some-buffers): Only check the
`save-some-buffers-function` property on functions from
`save-some-buffers-default-predicate` since callers which provide
a `pred` argument can arrange to compute `pred` themselves if needed.
* test/lisp/files-tests.el (files-tests-buffer-offer-save): Don't test
with `pred` set to `save-some-buffers-root` since it's not an
appropriate function for that any more.
* src/haiku_support.cc (keysym_from_raw_char): New function.
(DispatchMessage): Map raw character to keysym if applicable.
(be_map_key): Delete function.
* src/haiku_support.h (struct haiku_key_event): Update fields
to hold keysym and character instead.
* src/haikuterm.c (haiku_read_socket): Don't call be_map_key,
and use keysym field if provided instead.
This was found during the investigation surrounding bug#53136,
but is not directly related.
* src/filelock.c (lock_if_free): Explictly test err against -1
or -2, and reverse sign of system errors on Haiku. (No Haiku
error occupies -1 or -2.)
Believe it or not, people actually want this, because it makes
Emacs behave closer to some other editors such as WPS Office.
* lisp/term/x-win.el
(x-display-cursor-at-start-of-preedit-string): New user option.
(x-preedit-text): Respect new option.
* src/gtkutil.c (xg_im_context_preedit_changed): Set caret
position appropriately.
* src/xfns.c (xg_widget_key_press_event_cb): Ignore modifier
keys.
(xic_preedit_caret_callback, xic_preedit_draw_callback):
Constrain caret position to the string length as well.
* src/xfns.c (xic_preedit_caret_callback):
(xic_preedit_draw_callback): Use `cursor' property correctly.
* src/xterm.c (handle_one_xevent): Stop filtering XI release
events. This caused more problems than it fixed.
* src/xfns.c (xic_preedit_start_callback): Clear caret position.
(xic_preedit_caret_callback): Record new caret position and
announce it.
(xic_preedit_done_callback): Clear caret position.
(xic_preedit_draw_callback): Set caret position appropriately.
* src/gtkutil.c (xg_widget_key_press_cb): Get unicode mapping of
keyval if string doesn't exist.
* src/xterm.c (handle_one_xevent): Fix build without
HAVE_X_I18N.
* lisp/elide-head.el (elide-head-mode): New minor mode. (Bug#52980)
(elide-head--delete-overlay, elide-head--show)
(elide-head--hide): New functions factored out from ...
(elide-head, elide-head-show): ... here. Make obsolete in favor
of elide-head-mode.
(elide-head-headers-to-hide): Doc fix.
* test/lisp/elide-head-tests.el (ert-x): Require.
(elide-head-tests-elide-head-mode)
(elide-head-tests-elide-head-mode/enable-disable)
(elide-head-tests-elide-head-mode/normal-mode)
(elide-head-tests-elide-head-mode/revert-buffer): New tests.
(elide-head--add-test): Update test to use elide-head-mode.
(elide-head-tests-elide-head)
(elide-head-tests-elide-head-with-prefix-arg)
(elide-head-tests-show): Make obsolete.
