--- Libc/Libc-763.13/string/FreeBSD/strstr.3
+++ Libc/Libc-825.26/string/FreeBSD/strstr.3
@@ -37,26 +37,47 @@
 .Dt STRSTR 3
 .Os
 .Sh NAME
-.Nm strstr , strcasestr , strnstr
+.Nm strcasestr ,
+.Nm strcasestr_l ,
+.Nm strnstr ,
+.Nm strstr
 .Nd locate a substring in a string
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In string.h
 .Ft char *
-.Fn strstr "const char *big" "const char *little"
+.Fo strcasestr
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fc
 .Ft char *
-.Fn strcasestr "const char *big" "const char *little"
+.Fo strnstr
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fa "size_t n"
+.Fc
 .Ft char *
-.Fn strnstr "const char *big" "const char *little" "size_t len"
+.Fo strstr
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fc
+.In string.h
+.In xlocale.h
+.Ft char *
+.Fo strcasestr_l
+.Fa "const char *s1"
+.Fa "const char *s2"
+.Fa "locale_t loc"
+.Fc
 .Sh DESCRIPTION
 The
 .Fn strstr
 function
 locates the first occurrence of the null-terminated string
-.Fa little
+.Fa s2
 in the null-terminated string
-.Fa big .
+.Fa s1 .
 .Pp
 The
 .Fn strcasestr
@@ -68,11 +89,11 @@
 .Fn strnstr
 function
 locates the first occurrence of the null-terminated string
-.Fa little
+.Fa s2
 in the string
-.Fa big ,
+.Fa s1 ,
 where not more than
-.Fa len
+.Fa n
 characters are searched.
 Characters that appear after a
 .Ql \e0
@@ -82,20 +103,28 @@
 function is a
 .Fx
 specific API, it should only be used when portability is not a concern.
+.Pp
+While the
+.Fn strcasestr
+function uses the current locale, the
+.Fn strcasestr_l
+function may be passed a locale directly. See
+.Xr xlocale 3
+for more information.
 .Sh RETURN VALUES
 If
-.Fa little
+.Fa s2
 is an empty string,
-.Fa big
+.Fa s1
 is returned;
 if
-.Fa little
+.Fa s2
 occurs nowhere in
-.Fa big ,
+.Fa s1 ,
 .Dv NULL
 is returned;
 otherwise a pointer to the first character of the first occurrence of
-.Fa little
+.Fa s2
 is returned.
 .Sh EXAMPLES
 The following sets the pointer
@@ -128,7 +157,6 @@
 .Ed
 .Sh SEE ALSO
 .Xr memchr 3 ,
-.Xr memmem 3 ,
 .Xr strchr 3 ,
 .Xr strcspn 3 ,
 .Xr strpbrk 3 ,
@@ -136,7 +164,8 @@
 .Xr strsep 3 ,
 .Xr strspn 3 ,
 .Xr strtok 3 ,
-.Xr wcsstr 3
+.Xr wcsstr 3 ,
+.Xr xlocale 3
 .Sh STANDARDS
 The
 .Fn strstr