Disable comment char in ArrayConverter list parsing

[rootvector2]

ArrayConverter.parseElements sets up a StreamTokenizer but never disables its default comment character /, so a list element containing a slash comments out the rest of the input and the following elements are silently dropped: a/b,c parses to ["a"] and a leading slash such as /etc/passwd,/tmp/x parses to an empty array. Every other non-allowed character splits and keeps both sides (see testUnderscore_BEANUTILS_302, where first_value,second_value yields four elements), so / is the outlier. st.ordinaryChar('/') makes it split like any other separator; adding / to allowedChars still keeps it inside a token. Found while auditing the delimited-list parser against the _ behavior that test pins.

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[Copilot]

Pull request overview

This pull request fixes ArrayConverter.parseElements treating / as a comment introducer during StreamTokenizer parsing, which could silently drop later elements when list items contain forward slashes.

Changes:

• Disable / as a comment character in StreamTokenizer setup so it behaves like other non-allowed separator characters.
• Add a regression test ensuring forward slashes split tokens rather than truncating input.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/main/java/org/apache/commons/beanutils2/converters/ArrayConverter.java	Configures StreamTokenizer to treat / as an ordinary character instead of a comment start during element parsing.
src/test/java/org/apache/commons/beanutils2/converters/ArrayConverterTest.java	Adds a unit test covering forward-slash behavior in delimited list parsing.

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[garydgregory]

@rootvector2 Please address #426 (comment)

[garydgregory]

@rootvector2

Are you sure?

The / now behaves the same as a ,? That can't be right. Shouldn't the asserts be:

assertEquals("first/value", result[0]);
assertEquals("second/value", result[1]);

?

[rootvector2]

Yes. Any non-allowed char splits and keeps both sides by default, same as _ in testUnderscore_BEANUTILS_302 (first_value,second_value parses to 4 elements). Before the patch / was the only char that instead commented out the rest of the input, so a/b,c parsed to just ["a"]. Your asserts hold once / is in the allowed chars, same as _. I extended the test to mirror the underscore test: 4 elements by default, ["first/value", "second/value"] after setAllowedChars(new char[] { '.', '-', '/' }).

[garydgregory]

@rootvector2 Please see my questions.

[rootvector2]

Done on #426, switched the test to AtomicReference.