--- Libc/Libc-320/string/FreeBSD/strchr.3
+++ Libc/Libc-1698.100.8/string/FreeBSD/strchr.3
@@ -13,11 +13,7 @@
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
+.\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
@@ -33,56 +29,94 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     @(#)strchr.3	8.2 (Berkeley) 4/19/94
-.\" $FreeBSD: src/lib/libc/string/strchr.3,v 1.9 2002/12/18 13:33:03 ru Exp $
-.\"
-.Dd April 19, 1994
+.Dd February 13, 2013
 .Dt STRCHR 3
 .Os
 .Sh NAME
-.Nm strchr
+.Nm strchr , strrchr , strchrnul
 .Nd locate character in string
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In string.h
-.Ft char *
+.Ft "char *"
 .Fn strchr "const char *s" "int c"
+.Ft "char *"
+.Fn strrchr "const char *s" "int c"
+.Ft "char *"
+.Fn strchrnul "const char *s" "int c"
 .Sh DESCRIPTION
 The
 .Fn strchr
 function locates the first occurrence of
 .Fa c
+(converted to a
+.Vt char )
 in the string pointed to by
 .Fa s .
-The terminating
-.Dv NUL
-character is considered part of the string.
-If
+The terminating null character is considered part of the string;
+therefore if
 .Fa c
 is
 .Ql \e0 ,
+the functions locate the terminating
+.Ql \e0 .
+.Pp
+The
+.Fn strrchr
+function is identical to
 .Fn strchr
-locates the terminating
-.Ql \e0 .
+except it locates the last occurrence of
+.Fa c .
+.Pp
+The
+.Fn strchrnul
+function is identical to
+.Fn strchr
+except that if
+.Fa c
+is not found in
+.Fa s
+a pointer to the terminating
+.Ql \e0
+is returned.
 .Sh RETURN VALUES
-The function
+The functions
 .Fn strchr
-returns a pointer to the located character, or
+and
+.Fn strrchr
+return a pointer to the located character, or
 .Dv NULL
+if the character does not appear in the string.
+.Pp
+.Fn strchrnul
+returns a pointer to the terminating
+.Ql \e0
 if the character does not appear in the string.
 .Sh SEE ALSO
 .Xr memchr 3 ,
+.Xr memmem 3 ,
 .Xr strcspn 3 ,
 .Xr strpbrk 3 ,
-.Xr strrchr 3 ,
 .Xr strsep 3 ,
 .Xr strspn 3 ,
 .Xr strstr 3 ,
-.Xr strtok 3
+.Xr strtok 3 ,
+.Xr wcschr 3
 .Sh STANDARDS
+The functions
+.Fn strchr
+and
+.Fn strrchr
+conform to
+.St -isoC .
+The function
+.Fn strchrnul
+is a
+.Tn GNU
+extension.
+.Sh HISTORY
 The
-.Fn strchr
-function
-conforms to
-.St -isoC .
+.Fn strchrnul
+function first appeared in glibc 2.1.1 and was added in
+.Fx 10.0 .