emacs-29 updated (acf4763417e -> dcf8c011028)

[Gregory Heytings]

ghe pushed a change to branch emacs-29.

      from  acf4763417e Fix mouse highlight with some fonts in Cairo builds
      adds  85ed1c9ca6b Code cleanup for long line optimizations
      adds  7e26a5c774e Remove labeled restrictions before calling Fwiden
      adds  afc2c6c13cb Improve accuracy of cursor motion commands in long lines
      adds  974e4f33333 Make get_medium_narrowing_begv/zv static
      adds  2093e010dc1 Fix cursor motion in character-only terminals
      adds  dce08cf05cc Improve and fix last changes
      adds  097c5ee8f55 Two further fixes to last changes
      adds  0cc8d6826ad Three final fixes to last changes
      adds  c0b9530862c Another final fix to last changes
      adds  f0f08eeb05c Fix the return type of 'labeled_restrictions_get_bound'
      adds  1e3a66df459 Add an assertion in, and a commentary for, 
'get_nearby_bol_pos'
       new  dcf8c011028 Merge branch 'scratch/long-lines-cleanup' into 
'emacs-29'


Summary of changes:
 doc/lispref/positions.texi |   1 +
 lisp/subr.el               |   4 +-
 src/buffer.c               |   1 +
 src/callproc.c             |   1 +
 src/composite.c            |   4 +-
 src/dispextern.h           |  37 +++--
 src/editfns.c              | 347 ++++++++++++++++++++++++---------------------
 src/fileio.c               |   1 +
 src/indent.c               |   1 +
 src/keyboard.c             |  12 +-
 src/lisp.h                 |   6 +-
 src/lread.c                |   1 +
 src/xdisp.c                | 209 +++++++++++++++++++++------
 13 files changed, 392 insertions(+), 233 deletions(-)