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https://issues.apache.org/jira/browse/LOG4J2-2339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16473679#comment-16473679
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Remko Popma commented on LOG4J2-2339:
-------------------------------------
[~Jakkub], about creating a custom converter: here are the relevant sections of
the manual:
* http://logging.apache.org/log4j/2.x/manual/extending.html#PatternConverters
* http://logging.apache.org/log4j/2.x/manual/plugins.html#Converters
* Log4j 2 built-in converters source code:
http://logging.apache.org/log4j/2.x/log4j-core/xref/org/apache/logging/log4j/core/pattern/package-summary.html
* (example: line location:
http://logging.apache.org/log4j/2.x/log4j-core/xref/org/apache/logging/log4j/core/pattern/LineSeparatorPatternConverter.html
)
> format multiple conversion characters with one conversion specifier
> -------------------------------------------------------------------
>
> Key: LOG4J2-2339
> URL: https://issues.apache.org/jira/browse/LOG4J2-2339
> Project: Log4j 2
> Issue Type: New Feature
> Components: Core, Pattern Converters
> Affects Versions: 2.8.2
> Reporter: Jakub
> Priority: Major
>
> I am writing on suggestion from [[email protected]] in
> [https://stackoverflow.com/questions/50311762/log4j-set-class-and-method-summary-length-in-pattern]
>
>
> I would like to format multiple conversion characters with one conversion
> specifier.
> As Remko explained, it is currently not possible
> _No, each modifier applies to one conversion. But Log4j could add a new
> converter that means what you want. You can propose such a new converter on
> the mailing list or issue tracker_
> Would it be a useful feature to add to log4j2 ? Would it be hard to implement
> ?
>
> EG
> I would like to set summary length of class.method.line with
> %-60.60CML
> It's not possible now. Below what doc states
> [https://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/PatternLayout.html]
> {quote}Each conversion specifier starts with a percent sign (%) and is
> followed by optional format modifiers and a conversion charact*er*. The
> conversion charact*er* specifies the type of data
> The pattern parser knows when it has reached the end of a conversion
> specifier when it reads a conversion charact*er*.
> {quote}
> It writes only about single conversion character, I would like to modify
> multiple conversion characters with one conversion specifier.
>
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