y <B>Tcl_GetRegExpFromObj</B> or <B>Tcl_RegExpCompile</B>.
<P><DT>char <B>*start</B> (in)<DD>
If <I>text</I> is just a portion of some other string, this argument
identifies the beginning of the larger string.
If it is not the same as <I>text</I>, then no
&#8220;<B>^</B>&#8221;
matches will be allowed.
<P><DT>int <B>index</B> (in)<DD>
Specifies which range is desired:  0 means the range of the entire
match, 1 or greater means the range that matched a parenthesized
sub-expression.
<P><DT>const char <B>**star