RFR: 8274854: Mnemonics for menu containing numeric text not working [v3]

[Kevin Rushforth]

On Fri, 29 Oct 2021 13:58:35 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> This PR fixes an issue with mnemonic parsing by removing the restriction that a mnemonic symbol must be a letter. Now, it can be any character except whitespace.
>
> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
> 
>   changed javadoc

The latest changes look good (aside from the renaming of the class, which could be done separately). I'll look at the refactored tests and do some more testing next week.

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PR: https://git.openjdk.java.net/jfx/pull/647