[Bug 1603692] Re: java-update-alternatives doesn't recognize jdkhl label

[Paul Smith]

Note that there's a more comprehensive patch already available in the
linked Debian bug report (see the remote bug watches box to the right).

My hope would be someone would go even further and update the script to
show some kind of warning, at least, if unknown tags are seen so that
future updates to the set of tags are not silently ignored (I can do
that myself if someone is interested).

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https://bugs.launchpad.net/bugs/1603692

Title:
  java-update-alternatives doesn't recognize jdkhl label

Status in java-common:
  Confirmed
Status in java-common package in Ubuntu:
  Confirmed

Bug description:
  java-common                  0.56ubuntu2
  openjdk-8-jre-headless:amd64 8u91-b14-0ubuntu4~16.04.1

  Newer versions of openjdk-8-jre-headless provide a .jinfo file that
  uses a new tag "jdkhl" (for JDK headless).  Since update-java-
  alternatives doesn't know anything about that tag, it ignores all
  those entries and leaves them set to Java 7.

  I spend about 45 massively frustrating minutes trying to figure out
  what was going on before I realized that my javac was actually still
  Java 7 not Java 8 :(.

  In addition to recognizing the new tag, I think that java-update-
  alternatives should be modified to at least generate warning messages
  for any tags that it doesn't recognize rather than failing silently
  and leaving one believing that one's Java version has been changed
  appropriately when it hasn't.

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