8176407: (scanner) Scanner delimits incorrectly when delimiter spans a buffer boundary

[Stephan van Hulst]

Hello all, I'm new to the mailing list.

This week I've run into an issue that was already reported here:
https://bugs.openjdk.org/browse/JDK-8176407

JDK-8176407 is actually a clone of JDK-8072582, which was fixed but
then partially reverted because according to Xueming Shen, it
"triggered the regression reported in JDK-8159545".

The original fix:
https://github.com/openjdk/jdk/commit/5aad7937b7fd3715b173ab1b0f7d093c1735dfc9
The reversion: https://github.com/openjdk/jdk/commit/e922fb0afba26216109aa81f42420b6ddd5c1602

I would like to contribute a fix to the problem, but I can't find or
access JDK-8159545, so I don't know what regression was triggered by
the original fix.

Kind regards,

Stephan