Fix bug #7563 with docs of split-string-and-unquote.

 processes.texi (Shell Arguments): Fix documentation of
 `split-string-and-unquote'.  Add indexing.

doc/lispref/ChangeLog

+2010-12-11  Eli Zaretskii  <eliz@gnu.org>
+
+	* processes.texi (Shell Arguments): Fix documentation of
+	`split-string-and-unquote'.  Add indexing.  (Bug#7563)
+
 2010-12-07  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* modes.texi (Auto-Indentation): New section to document SMIE.

doc/lispref/processes.texi

@@ -195,10 +195,17 @@ a shell command:
 @end example
 @end defun
 
-@cindex quoting and unquoting shell command line
+@cindex quoting and unquoting command-line arguments
+@cindex minibuffer input, and command-line arguments
+@cindex @code{call-process}, command-line arguments from minibuffer
+@cindex @code{start-process}, command-line arguments from minibuffer
   The following two functions are useful for creating shell commands
 from individual argument strings, and taking shell command lines apart
-into individual arguments.
+into individual arguments.  These functions are mainly intended to be
+used for converting user input in the minibuffer, a Lisp string, into
+a list of string arguments to be passed to @code{call-process} or
+@code{start-process}, or for the converting such lists of arguments in
+a single Lisp string to be presented in the minibuffer or echo area.
 
 @defun split-string-and-unquote string &optional separators
 This function splits @var{string} into substrings at matches for the
@@ -210,7 +217,7 @@ If @var{separators} is omitted or @code{nil}, it defaults to
 @code{"\\s-+"}, which is a regular expression that matches one or more
 characters with whitespace syntax (@pxref{Syntax Class Table}).
 
-This function performs two types of quoting: enclosing a whole string
+This function supports two types of quoting: enclosing a whole string
 in double quotes @code{"@dots{}"}, and quoting individual characters
 with a backslash escape @samp{\}.  The latter is also used in Lisp
 strings, so this function can handle those as well.