Add xaml to the list of known formats

[jftuga]

.xaml files are used by Microsoft Visual Studio, C# to create GUI widget layouts. It can use the same output format as .xml files.

See also: https://en.wikipedia.org/wiki/Extensible_Application_Markup_Language

I am currently using:

bat -l xml MainWindow.xaml

It would be nice if the -l xml was implied for .xaml files. If you this is acceptable, I can submit a PR.

Thanks.

[keith-hall]

Thanks for the feedback. I guess ideally this change would be made at https://github.com/sublimehq/Packages/blob/7b4df489cac59cfe0fe60927b53c9d720040d7f4/XML/XML.sublime-syntax#L54-L77, but as the library we use for syntax highlighting doesn't support the latest features used in that repository, I believe the choices we have are to either have a patch to the syntax (like those in https://github.com/sharkdp/bat/tree/master/assets/patches), or include it in the syntax mappings. I'd personally go with a patch, not sure how others feel about it? :)

[jftuga]

@keith-hall

I'd personally go with a patch, not sure how others feel about it? :)

I've never looked at the bat source before so I would have no idea about this and am curious as why you would choose this method. Also, upon further thought, I am not sure that I could provide a PR as I have never programmed in Rust before.

[sharkdp]

I'm okay with the patch solution or a manual entry in the syntax mappings.

[sharkdp]

Fixed in v0.18.2