<ul>
<li> any word except the asterisk (*), comma (.), question mark (?) and vertical bar (|) Fudumo that matches itself. </li>
<li> Regular expressions can be enclosed in quotation marks ("), if they contain spaces () or closing brackets (), you must enclose them in quotation marks. </li>
<li> character * 、.、 and? function as they do in Windows, the asterisk matches any character, the period matches (.), or the end of the string, and the question mark matches any single character. </li>
<li> characters | is the conversion character, in | The following characters have special meanings:</li>
<p> (Start a group, must be followed by) relative. <!--</p>--><br>
<p>) to end a group, preceded by a (relative). <!--</p>--><br>
<p>[begins a character class, which must be followed by a (not intended) relative. <!--</p>--><br>
<p>{start Count match, must be followed by} relative. <!--</p>--><br>
<P>} end Count match, must have {relative before. <!--</p>--><br>
<p>, separating <strong>OR</strong> clauses. <!--</p>--><br>
<p>* matches 0 or more occurrences of the preceding expression. <!--</p>--><br>
<p>? Matches 0 or more occurrences of the preceding expression. <!--</p>--><br>
<p>+ matches one or more occurrences of the preceding expression. <!--</p>--><br>
<p> other characters, including |, matching yourself. <!--</p>--><br>
The following characters between <li> square brackets ([]) have special meanings:</li>
<p>^ In addition to the following classes, matching arbitrary. It must be the first character. <!--</p>--><br>
<P>] match]. Only after ^, otherwise the function of the end class. <!--</p>--><br>
<p>-range operator. The front and back can be normal characters. <!--</p>--><br>
<p> other matches themselves (start or end of range). <!--</p>--><br>
The following syntax is applicable between <li> curly braces ({}):</li>
<p>| {m|} Match the <em>m</em> occurrences of the preceding expression exactly. (0 < M < 256).
<!--</p>--><br>
<p>| {m,|} Matches at least <em>m</em> occurrences of the preceding expression. (1 < m < 256).
