So I put down my headphones on the table, and it touched the keyboard, and wrote this :
producing this:
...
at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Loop.matchInit(Pattern.java:4804)
at java.util.regex.Pattern$Prolog.match(Pattern.java:4741)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
at java.util.regex.Pattern$Start.match(Pattern.java:3461)
at java.util.regex.Matcher.search(Matcher.java:1248)
at java.util.regex.Matcher.find(Matcher.java:637)
at net.sourceforge.plantuml.preproc.UncommentReadLine.readLine(UncommentReadLine.java:67)
at net.sourceforge.plantuml.preproc.PreprocessorInclude.readLineInternal(PreprocessorInclude.java:127)
at net.sourceforge.plantuml.preproc.PreprocessorInclude.readLine(PreprocessorInclude.java:109)
at net.sourceforge.plantuml.preproc.IfManager.readLineInternal(IfManager.java:72)
at net.sourceforge.plantuml.preproc.IfManager.readLine(IfManager.java:68)
at net.sourceforge.plantuml.preproc.ReadLineInsertable.readLine(ReadLineInsertable.java:65)
at net.sourceforge.plantuml.preproc.Preprocessor.readLine(Preprocessor.java:73)
at net.sourceforge.plantuml.BlockUmlBuilder.init(BlockUmlBuilder.java:83)
at net.sourceforge.plantuml.BlockUmlBuilder.<init>(BlockUmlBuilder.java:65)
lastes beta version