.B nocasematch
is enabled, the match is performed without regard to the case
of alphabetic characters.
+Any part of the pattern may be quoted to force it to be matched as a
+string.
Substrings matched by parenthesized subexpressions within the regular
expression are saved in the array variable \fBBASH_REMATCH\fP.
The element of \fBBASH_REMATCH\fP with index 0 is the portion of the string
(see the description of @code{shopt} in @ref{The Shopt Builtin})
is enabled, the match is performed without regard to the case
of alphabetic characters.
+Any part of the pattern may be quoted to force it to be matched as a
+string.
Substrings matched by parenthesized subexpressions within the regular
expression are saved in the array variable @code{BASH_REMATCH}.
The element of @code{BASH_REMATCH} with index 0 is the portion of the string