RFR: 8374341: Use of "\s" instead of "\\s" in CoreUtils.java results in splitting on backspace instead of whitespace [v2]

[Stuart Marks]

On Tue, 27 Jan 2026 10:09:28 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

>> @sspitsyn Thank you. should I register a new bug report? Or, I think I can change this PR titles and descriptions.
>
> @thswlsqls Hi, are you able to edit the title of this PR to match the JBS issue?

Note that the `\s` escape sequence denotes a SPACE character (U+0020) and not a BACKSPACE character as stated in the description. Thus the regex might actually match the relevant line in the example from @kevinjwalls' comment:

    # cat  /proc/sys/kernel/core_pattern
    |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %d %F

if the character following `-coredump` is a space character.

Of course this is moot if the decision is to remove this stuff entirely... but it appears that the original code might have worked, at least in some cases. That might resolve the "How could this ever have worked?!?" mystery.

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PR Comment: https://git.openjdk.org/jdk/pull/28984#issuecomment-3807760773