RFR: JDK-8302323 Add repeat methods to StringBuilder/StringBuffer [v2]

[Raffaello Giulietti]

On Thu, 23 Feb 2023 17:39:10 GMT, Jim Laskey <jlaskey at openjdk.org> wrote:

>> Add the ability to repeatedly append char and CharSequence data to StringBuilder/StringBuffer.
>
> Jim Laskey has updated the pull request incrementally with one additional commit since the last revision:
> 
>   PR Cleanup

src/java.base/share/classes/java/lang/AbstractStringBuilder.java line 1850:

> 1848:         boolean isLatin1 = isLatin1();
> 1849:         if (isLatin1 && StringLatin1.canEncode(c)) {
> 1850:             while (index < limit) {

while (index != limit) {

is probably safer, in particular if `limit` has overflown to `Integer.MIN_VALUE`.
Not sure if this could happen, but...

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PR: https://git.openjdk.org/jdk/pull/12728