bug#20545: New minor mode Electric Quote

[Paul Eggert <eggert@cs.ucla.edu>]

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Thanks for the review.  I'll fold in the attached further patch before 
installing.  As you may be able to tell, I don't use the manual indexes and so 
my indexing can be a bit random.



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diff --git a/doc/emacs/modes.texi b/doc/emacs/modes.texi
index b4538db..e79561a 100644
--- a/doc/emacs/modes.texi
+++ b/doc/emacs/modes.texi
@@ -200,9 +200,6 @@ Auto Save mode saves the buffer contents periodically to reduce the
 amount of work you can lose in case of a crash.  @xref{Auto Save}.
 
 @item
-@cindex Electric Quote mode
-@cindex mode, Electric Quote
-@findex electric-quote-mode
 Electric Quote mode automatically converts quotation marks.  For
 example, it requotes text typed @t{`like this'} to text @t{‘like
 this’}.  You can control what kind of text it operates in, and you can
diff --git a/doc/emacs/text.texi b/doc/emacs/text.texi
index f243095..0785026 100644
--- a/doc/emacs/text.texi
+++ b/doc/emacs/text.texi
@@ -410,6 +410,7 @@ beginning of a line.
 @cindex Quotation marks
 @cindex Electric Quote mode
 @cindex mode, Electric Quote
+@findex electric-quote-mode
   One common way to quote is the typewriter convention, which quotes
 using straight apostrophes @t{'like this'} or double-quotes @t{"like
 this"}.  Another common way is the curved quote convention, which uses
@@ -425,6 +426,9 @@ converts a quotation's double grave accent and double apostrophe
 conversions are suppressed in buffers whose coding systems cannot
 represent curved quote characters.
 
+@vindex electric-quote-paragraph
+@vindex electric-quote-comment
+@vindex electric-quote-string
   You can customize the behavior of Electric Quote mode by customizing
 variables that control where it is active.  It is active in text
 paragraphs if @code{electric-quote-paragraph} is non-@code{nil}, in