aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--lib/kernel/doc/src/logger_chapter.xml11
-rw-r--r--lib/kernel/src/logger.erl3
-rw-r--r--lib/kernel/src/logger_formatter.erl2
3 files changed, 10 insertions, 6 deletions
diff --git a/lib/kernel/doc/src/logger_chapter.xml b/lib/kernel/doc/src/logger_chapter.xml
index 26066d0777..4a81cfa34a 100644
--- a/lib/kernel/doc/src/logger_chapter.xml
+++ b/lib/kernel/doc/src/logger_chapter.xml
@@ -209,10 +209,13 @@
<pre>fun((<seealso marker="logger#type-report"><c>logger:report()</c></seealso>,<seealso marker="logger#type-report_cb_config"><c>logger:report_cb_config()</c></seealso>) -> <seealso marker="stdlib:unicode#type-chardata"><c>unicode:chardata()</c></seealso>)
</pre>
<p>The fun must obey the <c>depth</c> and <c>chars_limit</c>
- parameters provided in the second argument, as the formatter
- can not do anything useful of these parameters with the
- returned string. This variant is used when the formatting of
- the report depends on the size parameters.</p>
+ parameters provided in the second argument, as the formatter can
+ not do anything useful of these parameters with the returned
+ string. The extra data also contains a field named
+ <c>single_line</c>, indicating if the printed log message may
+ contain line breaks or not. This variant is used when the
+ formatting of the report depends on the size or single line
+ parameters.</p>
<p>Example, format string and arguments:</p>
<code>logger:error("The file does not exist: ~ts",[Filename])</code>
<p>Example, string:</p>
diff --git a/lib/kernel/src/logger.erl b/lib/kernel/src/logger.erl
index 0ada8b4924..752dd8d493 100644
--- a/lib/kernel/src/logger.erl
+++ b/lib/kernel/src/logger.erl
@@ -78,7 +78,8 @@
-type report_cb() :: fun((report()) -> {io:format(),[term()]}) |
fun((report(),report_cb_config()) -> unicode:chardata()).
-type report_cb_config() :: #{depth := pos_integer() | unlimited,
- chars_limit := pos_integer() | unlimited}.
+ chars_limit := pos_integer() | unlimited,
+ single_line := boolean()}.
-type msg_fun() :: fun((term()) -> {io:format(),[term()]} |
report() |
unicode:chardata()).
diff --git a/lib/kernel/src/logger_formatter.erl b/lib/kernel/src/logger_formatter.erl
index 59aa6ec3af..ded89bac9f 100644
--- a/lib/kernel/src/logger_formatter.erl
+++ b/lib/kernel/src/logger_formatter.erl
@@ -165,7 +165,7 @@ format_msg({report,Report},#{report_cb:=Fun}=Meta,Config) when is_function(Fun,1
Meta,Config)
end;
format_msg({report,Report},#{report_cb:=Fun}=Meta,Config) when is_function(Fun,2) ->
- try Fun(Report,maps:with([depth,chars_limit],Config)) of
+ try Fun(Report,maps:with([depth,chars_limit,single_line],Config)) of
Chardata when ?IS_STRING(Chardata) ->
try chardata_to_list(Chardata) % already size limited by report_cb
catch _:_ ->