RFR: 8331535: Incorrect prompt for Console.readLine [v2]

[Jan Lahoda]

> When JLine reads a line, there may be a prompt provided. However, JLine will not interpret the prompt literally, it will handle `%` specially. As a consequence, doing:
> 
> System.console().readLine("%%s");
> 
> 
> will not print `%s`, as first `String.format` is used, which will convert `%%s` to `%s`, and then JLine will interpret the `%`. The proposed solution is to duplicate the `%`, so that JLine will print it.

Jan Lahoda has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/19081/files
  - new: https://git.openjdk.org/jdk/pull/19081/files/58cbd42e..58cbd42e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19081&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19081&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19081.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19081/head:pull/19081

PR: https://git.openjdk.org/jdk/pull/19081