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https://issues.apache.org/jira/browse/CONFIGURATION-742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16925552#comment-16925552
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Yuji Konishi commented on CONFIGURATION-742:
--------------------------------------------
As "." is a delimiter, it is converted to "..".
(DefaultConfigurationKey.escapeDelimiters())
configParser.getSection("dots_example").containsKey("......")
// return true
See, TestINIConfiguration.testGetSectionsDottedVar()
> Dots in ini keys corrupts nodes structure
> -----------------------------------------
>
> Key: CONFIGURATION-742
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-742
> Project: Commons Configuration
> Issue Type: Bug
> Components: Expression engine
> Affects Versions: 1.6
> Reporter: Michal Grzybek
> Priority: Major
>
> Example:
> {noformat}
> [dots_example]
> ...
> # only key, no value on purpose {noformat}
> Dots as key names are [considered as syntax
> error|http://commons.apache.org/proper/commons-configuration/userguide/howto_hierarchical.html#Escaping_special_characters]
> but no ConfigurationException is thrown and also this property is stored in
> data structure as a node with key="..." and value=null.
> This leads to problems:
>
> {{configParser.getSection("dots_example").getRootNode().getChildren()}}
> // returns Collection with one Node: "..."=null
> {{configParser.getSection("dots_example").getKeys()}}
> // returns List size=1 with "..." inside
>
> but
> {{configParser.getSection("dots_example").containsKey("...")}}
> // return false
>
> The result of inconsistent data structure is e.g. NPE when writing to file.
>
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