master updated (df5c1c9370 -> b950b46f51)

[Paul Eggert]

eggert pushed a change to branch master.

      from  df5c1c9370 ; * etc/NEWS: Move treesit-related functions and 
variables to Lisp Changes.
       new  5284af27ee Improve insert-file-contents checking
       new  b0842671e7 Improve insert-file-contents on non-regular files
       new  ccc0921151 Don’t scan text twice to guess coding system
       new  bae5fa5d9a Fix src/fileio.c comment
       new  b950b46f51 Fix insert-file-contents on /proc files


Summary of changes:
 src/fileio.c | 100 ++++++++++++++++++++++++++---------------------------------
 1 file changed, 44 insertions(+), 56 deletions(-)