From b39f239b3db53497b2c22c79ef82fbf95568fdb6 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 19 Sep 2021 15:53:13 +0300
Subject: [PATCH] Update documentation

---
 doc/system/changes.adoc   |  2 +-
 doc/system/reference.adoc | 17 ++++++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/doc/system/changes.adoc b/doc/system/changes.adoc
index d872f35..6232fe1 100644
--- a/doc/system/changes.adoc
+++ b/doc/system/changes.adoc
@@ -11,7 +11,7 @@ https://www.boost.org/LICENSE_1_0.txt
 ## Changes in Boost 1.78
 
 * Added support for source locations to `error_code`.
-* Added `error_code::to_string`.
+* Added `error_code::to_string`, `error_condition::to_string`.
 * `system_error::what()` now contains the source location, if present.
 * Added `result<T, E = error_code>`, a class holding either a value or an
   error, defined in `<boost/system/result.hpp>`.
diff --git a/doc/system/reference.adoc b/doc/system/reference.adoc
index c1830e1..ee6e72f 100644
--- a/doc/system/reference.adoc
+++ b/doc/system/reference.adoc
@@ -1096,6 +1096,10 @@ public:
 
     operator std::error_condition() const;
 
+    // to_string
+
+    std::string to_string() const;
+
     // stream insertion
 
     template <class charT, class traits>
@@ -1284,6 +1288,17 @@ operator std::error_condition() const;
 Returns: ::
   `std::error_condition( value(), category() )`.
 
+#### to_string
+
+```
+std::string to_string() const;
+```
+[none]
+* {blank}
++
+Returns: :: The concatenation of `"cond:"`, `category().name()`, `':'`,
+  and the string representation of `value()`.
+
 #### Stream Insertion
 
 ```
@@ -1294,7 +1309,7 @@ template <class charT, class traits>
 [none]
 * {blank}
 +
-Effects: :: `os << "cond:" << en.category().name() << ':' << en.value()`.
+Effects: :: `os << en.to_string()`.
 Returns: ::
   `os`.