Fix and docfix for the minibuffer-eldef-shorten-default feature.

* lisp/minibuf-eldef.el (minibuffer-eldef-shorten-default): Convert to
a defcustom with an appropriate :set function.
(minibuffer-default--in-prompt-regexps): New function.

* doc/emacs/mini.texi (Basic Minibuffer): New node.  Document
minibuffer-electric-default-mode.

* doc/emacs/display.texi (Visual Line Mode): Fix index entry.

1 files changed, 2 insertions, 3 deletions

diff --git a/etc/NEWS b/etc/NEWS
index ed69ae3fa6f..cbbe17cfccf 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -127,15 +127,14 @@ autoloads have been redefined as functions).
 ---
 *** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
 next and previous path separator, respectively.
-
++++
 *** minibuffer-electric-default-mode can rewrite (default ...) to [...].
 Just set minibuffer-eldef-shorten-default to t before enabling the mode.
 
 ** ImageMagick support, if available, is automatically enabled.
 It is no longer necessary to call `imagemagick-register-types'
 explicitly to install ImageMagick image types; that function is called
-automatically at startup, or when customizing a relevant imagemagick-
-option.
+automatically at startup, or when customizing an imagemagick- option.
 +++
 *** Setting `imagemagick-types-inhibit' to t now disables the use of
 ImageMagick to view images.  You must call imagemagick-register-types