Merge branch 'emacs-25' into aquamacs3

doc/emacs/abbrevs.texi

@@ -407,7 +407,7 @@ you are expanding.
 in this search; if it is @code{nil}, the word and the expansion must
 match in case.  If the value is @code{case-fold-search} (the default),
 then the variable @code{case-fold-search} controls whether to ignore
-case while searching for expansions (@pxref{Search Case}).
+case while searching for expansions (@pxref{Lax Search}).
 
 @vindex dabbrev-case-replace
   Normally, dynamic abbrev expansion preserves the case pattern
@@ -421,7 +421,7 @@ the dynamic abbrev's case pattern is preserved in most cases; if it is
 @code{nil}, the expansion is always copied verbatim.  If the value is
 @code{case-replace} (the default), then the variable
 @code{case-replace} controls whether to copy the expansion verbatim
-(@pxref{Replacement and Case}).
+(@pxref{Replacement and Lax Matches}).
 
   However, if the expansion contains a complex mixed case pattern, and
 the dynamic abbrev matches this pattern as far as it goes, then the

doc/emacs/emacs.texi

@@ -392,26 +392,29 @@ Searching and Replacement
 * Regexps::                Syntax of regular expressions.
 * Regexp Backslash::       Regular expression constructs starting with `\'.
 * Regexp Example::         A complex regular expression explained.
-* Search Case::            To ignore case while searching, or not.
+* Lax Search::                Search ignores some distinctions between
+                                similar characters, like letter-case.
 * Replace::                Search, and replace some or all matches.
 * Other Repeating Search:: Operating on all matches for some regexp.
+* Search Customizations::  Various search customizations.
 
 Incremental Search
 
 * Basic Isearch::        Basic incremental search commands.
 * Repeat Isearch::       Searching for the same string again.
-* Error in Isearch::     When your string is not found.
-* Special Isearch::      Special input in incremental search.
 * Isearch Yank::         Commands that grab text into the search string
                            or else edit the search string.
+* Error in Isearch::     When your string is not found.
+* Special Isearch::      Special input in incremental search.
 * Not Exiting Isearch::  Prefix argument and scrolling commands.
 * Isearch Minibuffer::   Incremental search of the minibuffer history.
 
 Replacement Commands
 
 * Unconditional Replace::  Replacing all matches for a string.
 * Regexp Replace::         Replacing all matches for a regexp.
-* Replacement and Case::   How replacements preserve case of letters.
+* Replacement and Lax Matches::
+                           Lax searching for text to replace.
 * Query Replace::          How to use querying.
 
 Commands for Fixing Typos

doc/emacs/glossary.texi

@@ -175,11 +175,22 @@ corresponding Control character.  @xref{User Input,C-M-}.
 Case conversion means changing text from upper case to lower case or
 vice versa.  @xref{Case}.
 
+@item Case Folding
+Case folding means ignoring the differences between case variants of
+the same letter: upper-case, lower-case, and title-case.  Emacs
+performs case folding by default in text search.  @xref{Lax Search}.
+
 @item Character
 Characters form the contents of an Emacs buffer.  Also, key sequences
 (q.v.@:) are usually made up of characters (though they may include
 other input events as well).  @xref{User Input}.
 
+@item Character Folding
+Character folding means ignoring differences between similarly looking
+characters, such as between @code{a}, and @code{@:a} and @code{@'a}.
+Emacs performs character folding by default in text search.  @xref{Lax
+Search}.
+
 @item Character Set
 Emacs supports a number of character sets, each of which represents a
 particular alphabet or script.  @xref{International}.

doc/emacs/maintaining.texi

@@ -2285,7 +2285,7 @@ input.  @xref{Query Replace}, for more information on query replace.
   You can control the case-sensitivity of tags search commands by
 customizing the value of the variable @code{tags-case-fold-search}.  The
 default is to use the same setting as the value of
-@code{case-fold-search} (@pxref{Search Case}).
+@code{case-fold-search} (@pxref{Lax Search}).
 
   It is possible to get through all the files in the tags table with a
 single invocation of @kbd{M-x tags-query-replace}.  But often it is

doc/emacs/mini.texi

@@ -642,8 +642,8 @@ expressions.  A numeric prefix argument @var{n} means to fetch the
 @var{n}th matching entry.  These commands are unusual, in that they
 use the minibuffer to read the regular expression argument, even
 though they are invoked from the minibuffer.  An upper-case letter in
-the regular expression makes the search case-sensitive (@pxref{Search
-Case}).
+the regular expression makes the search case-sensitive (@pxref{Lax
+Search}).
 
   You can also search through the history using an incremental search.
 @xref{Isearch Minibuffer}.