@end menu
The @samp{skip-chars@dots{}} functions also perform a kind of searching.
-@xref{Skipping Characters}.
+@xref{Skipping Characters}. To search for changes in character
+properties, see @ref{Property Search}.
@node String Search
@section Searching for Strings
@table @samp
@item [:ascii:]
-This matches any @acronym{ASCII} (unibyte) character.
+This matches any @acronym{ASCII} character (codes 0--127).
@item [:alnum:]
This matches any letter or digit. (At present, for multibyte
characters, it matches anything that has word syntax.)
@item [:lower:]
This matches any lower-case letter, as determined by
the current case table (@pxref{Case Tables}).
+@item [:multibyte:]
+This matches any multibyte character (@pxref{Text Representations}).
@item [:nonascii:]
-This matches any non-@acronym{ASCII} (multibyte) character.
+This matches any non-@acronym{ASCII} character.
@item [:print:]
This matches printing characters---everything except @acronym{ASCII} control
characters and the delete character.
@item [:space:]
This matches any character that has whitespace syntax
(@pxref{Syntax Class Table}).
+@item [:unibyte:]
+This matches any unibyte character (@pxref{Text Representations}).
@item [:upper:]
This matches any upper-case letter, as determined by
the current case table (@pxref{Case Tables}).
expressions can have subexpressions---after a simple string search, the
only information available is about the entire match.
+ Every successful search sets the match data. Therefore, you should
+query the match data immediately after searching, before calling any
+other function that might perform another search. Alternatively, you
+may save and restore the match data (@pxref{Saving Match Data}) around
+the call to functions that could perform another search.
+
A search which fails may or may not alter the match data. In the
past, a failing search did not do this, but we may change it in the
future. So don't try to rely on the value of the match data after