Follow text-quoting-style in display table init

This attempts to fix a problem reported by Alan Mackenzie in:
http://lists.gnu.org/archive/html/emacs-devel/2015-09/msg00112.html
* doc/lispref/display.texi (Active Display Table):
Mention how text-quoting-style affects it.
* doc/lispref/help.texi (Keys in Documentation):
Say how to set text-quoting-style in ~/.emacs.
* etc/NEWS: Document the change.
* lisp/startup.el (startup--setup-quote-display):
Follow user preference if text-quoting-style is set.
(command-line): Setup quote display again if user expresses
a preference in .emacs.

2 files changed, 9 insertions, 3 deletions

diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index 9d82edc9a98..14e2cd363a4 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -6531,8 +6531,12 @@ no buffer display table.
 The value of this variable is the standard display table, which is
 used when Emacs is displaying a buffer in a window with neither a
 window display table nor a buffer display table defined, or when Emacs
-is outputting text to the standard output or error streams.  Its
-default is @code{nil}.
+is outputting text to the standard output or error streams.  Although its
+default is typically @code{nil}, in an interactive session if the
+locale cannot display curved quotes, or if the initial value of
+@code{text-quoting-style} specifies a preference for ASCII, its
+default maps curved quotes to ASCII approximations.  @xref{Keys in
+Documentation}.
 @end defvar
 
 The @file{disp-table} library defines several functions for changing
diff --git a/doc/lispref/help.texi b/doc/lispref/help.texi
index 44c09a2085a..89339ffe575 100644
--- a/doc/lispref/help.texi
+++ b/doc/lispref/help.texi
@@ -345,7 +345,9 @@ quotes.  If the variable's value is @code{curve}, the style is
 apostrophes.  If the value is @code{grave}, the style is @t{`like
 this'} with grave accent and apostrophe.  The default value @code{nil}
 acts like @code{curve} if curved single quotes are displayable, and
-like @code{grave} otherwise.
+like @code{grave} otherwise.  To use the traditional @code{grave}
+style, put the line @code{(setq text-quoting-style 'grave)} into your
+@file{~/.emacs} file.
 @end defvar
 
 @defun substitute-command-keys string