From 0fd0d527d96268bfb089328dbcdd05d1afb8226e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9B=D0=B5=D0=BE=D0=BD=D0=B8=D0=B4=20=D0=AE=D1=80=D1=8C?=
 =?UTF-8?q?=D0=B5=D0=B2=20=28Leonid=20Yuriev=29?= <leo@yuriev.ru>
Date: Thu, 16 Nov 2023 13:48:27 +0300
Subject: [PATCH] =?UTF-8?q?mdbx++:=20=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=D0=B8=D0=B5=20=D1=82=D0=B8=D0=BF=D0=B0=20`mdbx::co?=
 =?UTF-8?q?mparator`=20=D0=B8=20=D1=84=D1=83=D0=BD=D0=BA=D1=86=D0=B8=D0=B9?=
 =?UTF-8?q?=20`mdbx::default=5Fcomparator()`=20(backport).?=
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---
 mdbx.h++ | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/mdbx.h++ b/mdbx.h++
index fb7fb166..eba58b50 100644
--- a/mdbx.h++
+++ b/mdbx.h++
@@ -3079,6 +3079,14 @@ struct LIBMDBX_API_TYPE map_handle {
   };
 };
 
+using comparator = ::MDBX_cmp_func *;
+inline comparator default_comparator(key_mode mode) noexcept {
+  return ::mdbx_get_keycmp(static_cast<MDBX_db_flags_t>(mode));
+}
+inline comparator default_comparator(value_mode mode) noexcept {
+  return ::mdbx_get_keycmp(static_cast<MDBX_db_flags_t>(mode));
+}
+
 /// \brief Key-value pairs put mode.
 enum put_mode {
   insert_unique = MDBX_NOOVERWRITE, ///< Insert only unique keys.