38fec86281e ; Improve the documentation of 'slice' display spec (bug#...
3f05b455f7e ; * src/editfns.c (Fmessage): Mention 'inhibit-message' (...

* src/indent.c (check_display_width): Handle 'image' and 'slice'
display specs, instead of using the width of the underlying text.
Accept 2 additional arguments: WINDOW and SCAN_BYTE.  (Bug#76107)

When 'mode-line-compact' is non-nil, the mode line string is
displayed as a whole.  That confuses the computation of ranges
of mouse highlighting on the mode line because all the glyphs
have the same Lisp object source.  As such, in this commit we
instead split the mode line string by sources, and display those
elements one by one, so the boundaries of each element could be
correctly detected for the purpose of mouse highlighting.

* src/xdisp.c (display_mode_line): Display mode line elements
one by one when 'mode-line-compact' is non-nil.
(display_mode_element): Record source element number of the
stored string via a text property.
(Fformat_mode_line): Initialize 'mode_line_elt_no' to 0.
(syms_of_xdisp): New symbol for the text property.

* src/editfns.c (Freplace_region_contents): Redo slightly to
pacify gcc -Wclobbered, by hoisting the eassume out of SCHARS and
into the caller later, where it’ll do more good anyway.

* src/xdisp.c (display_line): Remove incomplete glyph sequence of
the last multi-column character, if not all of its glyphs fit in
the marginal area.  (Bug#77452)

* src/xdisp.c (note_mode_line_or_margin_highlight): Remove
correction of DX and DY due to image slices, as this is now done
in 'mode_line_string'.
* src/dispnew.c (mode_line_string): Make DX and DY account for
image slices.  (Bug#77429)

* src/xdisp.c (note_mode_line_or_margin_highlight): Fix coordinates
for image slices wrt ':map' keyword when the image is on the mode
line or header line.  (Bug#77429)

* src/json.c (Fjson_insert): Simplify 'memcpy' argument.
(Fjson_parse_buffer): Only read to ZV, not all the way to Z.
* test/src/json-tests.el (with-all-gap-positions-in-temp-buffer):
New macro.
(json-parse-buffer/restricted): New test.