master updated (89a10ffcc4 -> 849223fba1)

[Gregory Heytings]

ghe pushed a change to branch master.

      from  89a10ffcc4 Fix the new ctags test
      adds  2727af3fd4 Improved locked narrowing.
      adds  e41e9740fb Fix user narrowing handling.
      adds  4f19e1a5d1 Fix mode line redisplay bug when locked narrowing is in 
effect.
      adds  22375315f1 Revert 4f19e1a5d1
      adds  01efdbd336 Better way to protect redisplay routines from locked 
narrowings.
      adds  890d6c15a7 ; * src/editfns.c (Fnarrow_to_region): Two forgotten 
cases.
      adds  2342fb052b ; * src/editfns.c (Fnarrowing_lock): Minor docstring 
improvement.
      adds  ea8e0f67bb Minor improvements to locked narrowing.
      adds  3bf19c417f Merge master into feature/improved-locked-narrowing.
      adds  aef803d6c3 Merge master into feature/improved-locked-narrowing.
      adds  ba9315b164 Merge master into feature/improved-locked-narrowing.
      adds  9dee6df39c Reworked locked narrowing.
      adds  a246524039 Generic 'with-narrowing' macro.
      adds  16b8b0d1e0 Save and restore narrowing locks in 'save-restriction'.
      adds  558084c7f7 Improve locked narrowing around low-level hooks.
      adds  2ea4f97847 Further improvements to narrowing locks
      adds  4b5e31bf02 Docstring improvements
      adds  1bf0b72eb7 Docstring improvements
      adds  321d4e6155 Minor improvements for locked narrowing
      adds  1d1a83ba56 Improve handling of killed buffers in locked narrowings
      adds  bf4373f90a Simplify narrowing_locks_restore
      adds  914b7903ad ; * src/editfns.c: Minor improvements in comments.
      adds  18fa159fa9 ; * src/xdisp.c (get_locked_narrowing_begv): Minor 
change.
       new  849223fba1 Merge branch 'feature/improved-locked-narrowing'


Summary of changes:
 lisp/subr.el     |  25 ++++
 src/buffer.c     |  37 +++++-
 src/dispextern.h |  10 ++
 src/editfns.c    | 373 ++++++++++++++++++++++++++++++++++++++++++++-----------
 src/keyboard.c   |  16 +--
 src/lisp.h       |   3 +-
 src/xdisp.c      |  59 +++++++--
 7 files changed, 432 insertions(+), 91 deletions(-)