3 files changed, 24 insertions, 4 deletions
diff --git a/libbutl/regex.ixx b/libbutl/regex.ixx
index 805acd1..f55cb07 100644
--- a/libbutl/regex.ixx
+++ b/libbutl/regex.ixx
@@ -38,4 +38,13 @@ LIBBUTL_MODEXPORT namespace butl //@@ MOD Clang needs this for some reason.
     return regex_replace_parse (
       s, std::basic_string<C>::traits_type::length (s), f);
   }
+
+  template <typename C>
+  inline std::basic_string<C>
+  regex_replace_match_results (
+    const std::match_results<typename std::basic_string<C>::const_iterator>& m,
+    const std::basic_string<C>& fmt)
+  {
+    return regex_replace_match_results (m, fmt.c_str (), fmt.size ());
+  }
 }
diff --git a/libbutl/regex.mxx b/libbutl/regex.mxx
index b5490b1..b1ba1b9 100644
--- a/libbutl/regex.mxx
+++ b/libbutl/regex.mxx
@@ -95,6 +95,20 @@ LIBBUTL_MODEXPORT namespace butl
                        const std::basic_regex<C>&,
                        const std::basic_string<C>& fmt);
 
+  // As above but using match_results.
+  //
+  template <typename C>
+  std::basic_string<C>
+  regex_replace_match_results (
+    const std::match_results<typename std::basic_string<C>::const_iterator>&,
+    const std::basic_string<C>& fmt);
+
+  template <typename C>
+  std::basic_string<C>
+  regex_replace_match_results (
+    const std::match_results<typename std::basic_string<C>::const_iterator>&,
+    const C* fmt, std::size_t fmt_n);
+
   // Parse the '/<regex>/<format>/' replacement string into the regex/format
   // pair. Other character can be used as a delimiter instead of '/'. Throw
   // std::invalid_argument or std::regex_error on parsing error.
diff --git a/libbutl/regex.txx b/libbutl/regex.txx
index aa845be..8fe5308 100644
--- a/libbutl/regex.txx
+++ b/libbutl/regex.txx
@@ -3,13 +3,11 @@
 
 LIBBUTL_MODEXPORT namespace butl //@@ MOD Clang needs this for some reason.
 {
-  // Replace the regex match results using the format string.
-  //
   template <typename C>
   std::basic_string<C>
   regex_replace_match_results (
     const std::match_results<typename std::basic_string<C>::const_iterator>& m,
-    const std::basic_string<C>& fmt)
+    const C* fmt, std::size_t n)
   {
     using namespace std;
 
@@ -60,7 +58,6 @@ LIBBUTL_MODEXPORT namespace butl //@@ MOD Clang needs this for some reason.
       }
     };
 
-    size_t n (fmt.size ());
     for (size_t i (0); i < n; ++i)
     {
       C c (fmt[i]);