Crash: link to reference is nested in image when format is JSON

How to repro

[![foo](foo)][bar]

[bar]: bar

Save above doc as tmp.md and run redpen -r json tmp.md

Log

[2017-12-12 13:15:45.717][INFO ] cc.redpen.Main - Configuration file: /usr/local/Cellar/redpen/1.10.0/libexec/conf/redpen-conf-en.xml
[2017-12-12 13:15:45.723][INFO ] cc.redpen.config.ConfigurationLoader - Loading config from specified config file: "/usr/local/Cellar/redpen/1.10.0/libexec/conf/redpen-conf-en.xml"
[2017-12-12 13:15:45.734][INFO ] cc.redpen.config.ConfigurationLoader - Succeeded to load configuration file
[2017-12-12 13:15:45.734][INFO ] cc.redpen.config.ConfigurationLoader - Language is set to "en"
[2017-12-12 13:15:45.734][WARN ] cc.redpen.config.ConfigurationLoader - No variant configuration...
[2017-12-12 13:15:45.786][INFO ] cc.redpen.config.ConfigurationLoader - No "symbols" block found in the configuration
[2017-12-12 13:15:45.789][INFO ] cc.redpen.config.SymbolTable - Default symbol settings are loaded
[2017-12-12 13:15:45.792][INFO ] cc.redpen.parser.SentenceExtractor - "[., ?, !]" are added as a end of sentence characters
[2017-12-12 13:15:45.792][INFO ] cc.redpen.parser.SentenceExtractor - "[', "]" are added as a right quotation characters
[2017-12-12 13:15:46.101][WARN ] cc.redpen.parser.markdown.ToFileContentSerializer - Failed to add parent for a Section
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1
	at java.util.ArrayList.elementData(ArrayList.java:418)
	at java.util.ArrayList.get(ArrayList.java:431)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visit(ToFileContentSerializer.java:412)
	at org.pegdown.ast.RefLinkNode.accept(RefLinkNode.java:33)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visitChildren(ToFileContentSerializer.java:74)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visit(ToFileContentSerializer.java:452)
	at org.pegdown.ast.SuperNode.accept(SuperNode.java:43)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visitChildren(ToFileContentSerializer.java:74)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visit(ToFileContentSerializer.java:300)
	at org.pegdown.ast.ParaNode.accept(ParaNode.java:35)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visitChildren(ToFileContentSerializer.java:74)
	at cc.redpen.parser.markdown.ToFileContentSerializer.visit(ToFileContentSerializer.java:315)
	at org.pegdown.ast.RootNode.accept(RootNode.java:51)
	at cc.redpen.parser.markdown.ToFileContentSerializer.toFileContent(ToFileContentSerializer.java:90)
	at cc.redpen.parser.MarkdownParser.parse(MarkdownParser.java:79)
	at cc.redpen.parser.BaseDocumentParser.parse(BaseDocumentParser.java:58)
	at cc.redpen.RedPen.parse(RedPen.java:131)
	at cc.redpen.Main.getDocuments(Main.java:221)
	at cc.redpen.Main.run(Main.java:196)
	at cc.redpen.Main.main(Main.java:60)

Environment

OS

macOS 10.12

redpen

v1.10.0 (installed via brew install)

Java

java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.65-b01, mixed mode)

[rhysd]

After upgrading redpen via Homebrew, it backs to work fine now. Thank you for your quick fix 👍

[takahi-i]

I will release the new version of RedPen containing this hotfix soon.