master updated (3502321 -> 751f170)

[Lars Ingebrigtsen]

larsi pushed a change to branch master.

      from  3502321   Fix regressions in the last change
       new  42be416   Don't remove `fontified' in nxml--buffer-substring-filter
       new  751f170   Add new functions to replace strings/regexp in a region


Summary of changes:
 doc/lispref/searching.texi  | 26 ++++++++++++++-----
 etc/NEWS                    |  6 +++++
 lisp/emacs-lisp/shortdoc.el |  6 +++++
 lisp/nxml/nxml-mode.el      |  4 +--
 lisp/subr.el                | 61 +++++++++++++++++++++++++++++++++++++++++++++
 test/lisp/subr-tests.el     | 46 ++++++++++++++++++++++++++++++++++
 6 files changed, 140 insertions(+), 9 deletions(-)