RFR: 8299080: Wrong default value of snippet lang attribute

[Jonathan Gibbons]

On Mon, 1 Jul 2024 16:28:34 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

>> I think Chen's point was that it should not be `null`, to which I agree, although it is probably a corner case. 
>> 
>> One thing I would consider is converting the result or this method to lower case, since that is how the language attribute value is usually represented.
>
>> I think Chen's point was that it should not be `null`, to which I agree, although it is probably a corner case.
> 
> If so, my bad for misreading it. For such corner cases authors should specify `lang` attribute.

General comment: while the dust on `Path.getExtension` is still settling, as a matter of policy, we should try and stay compatible with that. In particular, a filename like `.gitignore` is a hidden filename with no extension, not an empty filename with a 9-letter extension.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/19971#discussion_r1671125192