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| author | Siri Hansen <[email protected]> | 2018-08-10 16:38:48 +0200 |
|---|---|---|
| committer | Siri Hansen <[email protected]> | 2018-08-13 12:45:01 +0200 |
| commit | 8df53e8de0c323efd03c959bef801216952722f8 (patch) | |
| tree | 5ed35ec650ca31e9f942d08b2d4dd1df04ba120a /lib/kernel/doc/src | |
| parent | 8cb79ba4d3b665e06a39c3437d7227c831753945 (diff) | |
| download | otp-8df53e8de0c323efd03c959bef801216952722f8.tar.gz otp-8df53e8de0c323efd03c959bef801216952722f8.tar.bz2 otp-8df53e8de0c323efd03c959bef801216952722f8.zip | |
[logger] Avoid unwanted commas introduced by formatter's single_line option
When printing a map with ~p in a log message, the formatter's
single_line option in some cases introduced unwanted commas after
'=>', for example:
This is now corrected. When single_line==true, width 0 is added to all
~p and ~P control sequences in the format string.
Diffstat (limited to 'lib/kernel/doc/src')
| -rw-r--r-- | lib/kernel/doc/src/logger_formatter.xml | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/kernel/doc/src/logger_formatter.xml b/lib/kernel/doc/src/logger_formatter.xml index 9226d19834..5a060fd42b 100644 --- a/lib/kernel/doc/src/logger_formatter.xml +++ b/lib/kernel/doc/src/logger_formatter.xml @@ -130,10 +130,16 @@ </item> <tag><c>single_line = boolean()</c></tag> <item> - <p>If set to <c>true</c>, all newlines in the message are - replaced with <c>", "</c>, and white spaces following - directly after newlines are removed. Notice that newlines - added by the <c>template</c> parameter are not replaced.</p> + <p>If set to <c>true</c>, each log event is printed as a + single line. To achieve this, <c>logger_formatter</c> + sets the field width to <c>0</c> for all <c>~p</c> + and <c>~P</c> control sequences in the format a string + (see <seealso marker="stdlib:io#format-2"> + <c>io:format/2</c></seealso>), and replaces all + newlines in the message with <c>", "</c>. White spaces + following directly after newlines are removed. Notice + that newlines added by the <c>template</c> parameter are + not replaced.</p> <p>Defaults to <c>true</c>.</p> </item> <tag><marker id="template"/> |