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Posted to notifications@logging.apache.org by "Donatien RIVIERE (Jira)" <ji...@apache.org> on 2020/12/03 10:33:00 UTC
[jira] [Created] (LOG4J2-2968) Placeholder with default value
containing "}"
Donatien RIVIERE created LOG4J2-2968:
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Summary: Placeholder with default value containing "}"
Key: LOG4J2-2968
URL: https://issues.apache.org/jira/browse/LOG4J2-2968
Project: Log4j 2
Issue Type: Bug
Components: Lookups
Affects Versions: 2.13.3, 2.14.0
Environment:
Reporter: Donatien RIVIERE
Attachments: StrSubstitutorPatternDefaultValueTest.java
StrSubstitutor does not properly handle the variable default values that contains "}" because it is interpreted as end of default value.
However, this character is part of the pattern layout format, so it is very common to expect defining a variable allowing to set a pattern, and fallback to the default value.
Example:
{code:yaml}
pattern: $\{env:MY_PATTERN:-%date{DEFAULT} %level %m%n}
{code}
This pattern is interpreted as below which is obviously wrong (and not a valid pattern format).
{code:java}
%date{DEFAULT %level %m%n}
{code}
It would be nice to be able to protected the default value with quotes or any begin/end character.
Please find the JUnit test case in attachment.
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