On Mon, 5 Feb 2024 21:51:02 GMT, Magnus Ihse Bursie <[email protected]> wrote:

>> According to [the 
>> specification](https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/util/Properties.html#load(java.io.Reader))
>>  trailing whitespaces in the values of properties files are (somewhat 
>> surprisingly) actually significant.
>> 
>> We have multiple files in the JDK with trailing whitespaces in the values. 
>> For most of this files, this is likely incorrect and due to oversight, but 
>> in a few cases it might actually be intended (like "The value is: ").
>> 
>> After a discussion in the PR for 
>> [JDK-8295729](https://bugs.openjdk.org/browse/JDK-8295729), the consensus 
>> was to replace valid trailing spaces with the corresponding unicode 
>> sequence, `\u0020`. (And of course remove non-wanted trailing spaces.)
>> 
>> Doing so has a dual benefit:
>> 
>> 1) It makes it clear to everyone reading the code that there is a trailing 
>> space and it is intended
>> 
>> 2) It will allow us to remove all actual trailing space characters, and turn 
>> on the corresponding check in jcheck to keep the properties files, just like 
>> all other source code files, free of trailing spaces.
>> 
>> Ultimately, the call of whether a trailing space is supposed to be there, or 
>> is a bug, lies with the respective component teams owning these files. Thus 
>> I have split up the set of properties files with trailing spaces in several 
>> groups, to match the JDK teams, and open a JBS issue for each of them. This 
>> issue is for code I believe belong with the serviceability team.
>
> Magnus Ihse Bursie has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Restore period

Marked as reviewed by cjplummer (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk/pull/11490#pullrequestreview-1863870608

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