Syntax highlighting anomalies

[mattmc3]

I use your highlighter in VSCode and it's really helpful. Thanks for maintaining this project.

In my usage of this plugin, I've noticed some anomalies:

• The second pipe in an or (||) is weirdly not colorized, and && isn't colorized at all.
• commands are not properly colorized on same line ;or or ;and Fish syntax

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As an aside, I'm also a long time SublimeText user, and the syntax highlights this way with the Sublime Fish plugin.

I'm not sure if VSCodes' grammars support .sublime-syntax files, or if there's a way to convert those back to TextMate grammars (which Sublime used originally), and then use that .tmLanguage grammar file to generate an updated VSCode one. That might be one way to capture some of these anomalies.