git: 47af8281c55d - stable/13 - memmem: add a note about other systems which have memmem

The branch stable/13 has been updated by emaste:

URL: https://cgit.FreeBSD.org/src/commit/?id=47af8281c55d1bd2bd774555c9ad0af5ef3a806e

commit 47af8281c55d1bd2bd774555c9ad0af5ef3a806e
Author:     Ed Maste <emaste@FreeBSD.org>
AuthorDate: 2023-03-30 01:03:27 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2023-04-27 17:04:55 +0000

    memmem: add a note about other systems which have memmem
    
    memmem started as a GNU extension but is now widely available.
    
    Reviewed by:    mhorne (slightly earlier version)
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D39337
    
    (cherry picked from commit 30da840c627c80800c06edef346d907d6e5066a6)
---
 lib/libc/string/memmem.3 | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/libc/string/memmem.3 b/lib/libc/string/memmem.3
index a2a7c2ece623..5f8b9d792e78 100644
--- a/lib/libc/string/memmem.3
+++ b/lib/libc/string/memmem.3
@@ -26,7 +26,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 17, 2017
+.Dd March 30, 2023
 .Dt MEMMEM 3
 .Os
 .Sh NAME
@@ -71,7 +71,8 @@ is returned.
 .Xr strstr 3
 .Sh CONFORMING TO
 .Fn memmem
-is a GNU extension.
+started as a GNU extension but is now available in at least
+the GNU, musl, bionic, OpenBSD, NetBSD, macOS, and Illumos C runtime libraries.
 .Sh HISTORY
 The
 .Fn memmem