From 98e0ccb4a56b3b2b6a552463f78e699ec7490669 Mon Sep 17 00:00:00 2001
From: Siri Hansen <siri@erlang.org>
Date: Fri, 9 Jun 2017 17:45:09 +0200
Subject: [stdlib] Open error log file as utf8

This allows the use of ~ts/~tp/~tw in calls to error_logger:format/2,
error_logger:error_msg/2 and error_logger:info_msg/2.
---
 lib/kernel/doc/src/error_logger.xml | 20 +++++++++++++++++++-
 lib/kernel/doc/src/kernel_app.xml   |  2 +-
 2 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'lib/kernel')

diff --git a/lib/kernel/doc/src/error_logger.xml b/lib/kernel/doc/src/error_logger.xml
index 27db00819f..91bf57cb91 100644
--- a/lib/kernel/doc/src/error_logger.xml
+++ b/lib/kernel/doc/src/error_logger.xml
@@ -126,6 +126,12 @@ ok</pre>
 	  <seealso marker="#error_report/1"><c>error_report/1</c></seealso>
 	  instead.</p>
         </warning>
+        <warning>
+          <p>If the Unicode translation modifier (<c>t</c>) is used in
+            the format string, all error handlers must ensure that the
+            formatted output is correctly encoded for the I/O
+            device.</p>
+        </warning>
       </desc>
     </func>
     <func>
@@ -197,6 +203,12 @@ ok</pre>
             the standard event handler, meaning no further events are
             logged. When in doubt, use <c>info_report/1</c> instead.</p>
         </warning>
+        <warning>
+          <p>If the Unicode translation modifier (<c>t</c>) is used in
+            the format string, all error handlers must ensure that the
+            formatted output is correctly encoded for the I/O
+            device.</p>
+        </warning>
       </desc>
     </func>
     <func>
@@ -262,7 +274,7 @@ ok</pre>
               successful, or <c>{error, allready_have_logfile}</c> if
               logging to file is already enabled, or an error tuple if
               another error occurred (for example, if <c><anno>Filename</anno></c>
-              cannot be opened).</p>
+              cannot be opened). The file is opened with encoding UTF-8.</p>
           </item>
           <tag><c>close</c></tag>
           <item>
@@ -345,6 +357,12 @@ ok</pre>
             the standard event handler, meaning no further events are
             logged. When in doubt, use <c>warning_report/1</c> instead.</p>
         </warning>
+        <warning>
+          <p>If the Unicode translation modifier (<c>t</c>) is used in
+            the format string, all error handlers must ensure that the
+            formatted output is correctly encoded for the I/O
+            device.</p>
+        </warning>
       </desc>
     </func>
     <func>
diff --git a/lib/kernel/doc/src/kernel_app.xml b/lib/kernel/doc/src/kernel_app.xml
index 75e1e18d86..e5ac031539 100644
--- a/lib/kernel/doc/src/kernel_app.xml
+++ b/lib/kernel/doc/src/kernel_app.xml
@@ -186,7 +186,7 @@
           <tag><c>{file, FileName}</c></tag>
           <item><p>Installs the standard event handler, which prints error
            reports to file <c>FileName</c>, where <c>FileName</c>
-           is a string.</p></item>
+           is a string. The file is opened with encoding UTF-8.</p></item>
           <tag><c>false</c></tag>
           <item>
             <p>No standard event handler is installed, but
-- 
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