From f4dfdc072ed55ec9bb47c5911223a5ab7825d3fd Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Tue, 17 Oct 2023 08:15:10 +0200
Subject: [PATCH] fix: printing of `half_high_dot` now properly updates the
 iterator

---
 src/core/include/mp-units/unit.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/include/mp-units/unit.h b/src/core/include/mp-units/unit.h
index e2f7af30..54a9e609 100644
--- a/src/core/include/mp-units/unit.h
+++ b/src/core/include/mp-units/unit.h
@@ -671,7 +671,7 @@ constexpr Out print_separator(Out out, unit_symbol_formatting fmt)
     if (fmt.encoding != text_encoding::unicode)
       throw std::invalid_argument(
         "'unit_symbol_separator::half_high_dot' can be only used with 'text_encoding::unicode'");
-    copy(std::string_view("⋅"), out);
+    out = copy(std::string_view("⋅"), out).out;
   } else {
     *out++ = ' ';
   }