Update documentation for more next-error features

* doc/emacs/maintaining.texi (Change Log Commands): Mention
change-log-goto-source.

* doc/emacs/building.texi (Compilation Mode): Document
next-error-find-buffer-function and next-error-select-buffer.

* doc/emacs/building.texi (Grep Searching):
* doc/emacs/files.texi (Diff Mode):
* doc/emacs/search.texi (Other Repeating Search):
* doc/emacs/windows.texi (Displaying Buffers):
Prefer ‘M-g M-n’ over ‘C-x `’.

* lisp/simple.el (next-error-find-buffer-function, next-error)
(next-error-select-buffer): Elaborate docstrings.  (Bug#20493)

1 files changed, 3 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 366eccae80b..ffe2f508a89 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -292,6 +292,7 @@ can now be searched via 'C-s'.
 
 ** Search and Replace
 
++++
 *** 'search-exit-option' provides new options 'move' and 'shift-move'
 to extend the search string by yanking text that ends at the new
 position after moving point in the current buffer.  'shift-move'
@@ -317,6 +318,7 @@ by default.
 
 ** grep
 
++++
 *** rgrep, lgrep and zrgrep now hide part of the command line
 that contains a list of ignored directories and files.
 Clicking on the button with ellipsis unhides it.
@@ -347,6 +349,7 @@ are evaluated lazily.
 
 ** next-error
 
++++
 *** New customizable variable 'next-error-find-buffer-function'.
 This variable defines the logic of finding a next-error capable
 buffer.  It has an option to use a single such buffer on selected