Some hi-lock doc

* doc/emacs/display.texi (Highlight Interactively):
Mention hi-lock-auto-select-face.

* lisp/hi-lock.el (hi-lock-auto-select-face, hi-lock-line-face-buffer)
(hi-lock-face-buffer, hi-lock-face-phrase-buffer)
(hi-lock-face-symbol-at-point, hi-lock-read-face-name): Doc tweaks.

* etc/NEWS: Related edits.

1 files changed, 8 insertions, 2 deletions

diff --git a/doc/emacs/display.texi b/doc/emacs/display.texi
index d9fd819c219..d53c80acafd 100644
--- a/doc/emacs/display.texi
+++ b/doc/emacs/display.texi
@@ -928,6 +928,12 @@ highlighting, Hi Lock provides several of its own and these are
 pre-loaded into a list of default values.  While being prompted
 for a face use @kbd{M-n} and @kbd{M-p} to cycle through them.
 
+@vindex hi-lock-auto-select-face
+Setting the option @code{hi-lock-auto-select-face} to a non-@code{nil}
+value causes this command (and other Hi Lock commands that read faces)
+to automatically choose the next face from the default list without
+prompting.
+
 You can use this command multiple times, specifying various regular
 expressions to highlight in different ways.
 
@@ -976,8 +982,8 @@ initial lower-case letters will become case insensitive.
 @findex highlight-symbol-at-point
 @cindex symbol, highlighting
 @cindex highlighting symbol at point
-Highlight the symbol found near point without prompting, using the next
-available face automatically (@code{highlight-symbol-at-point}).
+Highlight the symbol found near point, using the next available face
+(@code{highlight-symbol-at-point}).
 
 @item M-s h w
 @itemx C-x w b