Pavel_K created LOG4J2-3537:
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Summary: Ansi escape code for highlight is generated wrong
Key: LOG4J2-3537
URL: https://issues.apache.org/jira/browse/LOG4J2-3537
Project: Log4j 2
Issue Type: Bug
Affects Versions: 2.14.1
Reporter: Pavel_K
Attachments: Screenshot from 2022-06-14 16-09-30.png, Screenshot from
2022-06-14 16-13-13.png
This is a test pattern layout:
{code:java}
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS}
%highlight{[%level]}{FATAL=red bright, ERROR=red bright, WARN=yellow bright,
INFO=magenta bright, DEBUG=green, TRACE=blue bright} [%t] %logger{36} - %msg%n"
disableAnsi="false"/>
{code}
As you see for TRACE level is `blue bright`. However, this is a generated code:
[34;1m[TRACE][m . As you see we have
[SGR|https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters]
function with two parameters: 34 is color and 1 is bold.
For example linux terminal will render it this way:
!Screenshot from 2022-06-14 16-09-30.png!
We see, that it is not `bright blue` but `bold blue`. At the same time in
[manual|https://logging.apache.org/log4j/2.x/manual/layouts.html] they speak
about different colors:
!Screenshot from 2022-06-14 16-13-13.png!
And if we want bright blue, generated escape code should be `[94m[TRACE][m` -
see the link to SGR function I provided.
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