The only problem is that the tokens generated by the PowerShell tokenizer do not align perfectly to the semantic token types predefined by VS Code. While also always being up-to-date with the language grammar. Which describes the tokens more accurately than regular expressions can, Here are a few examples where syntax highlighting fails in Leading to inconsistent or incorrect highlighting. There are many complex and context-dependent tokens these grammars are unable to parse, Since TextMate grammars rely on these expressions, However, there are some limitations with regular expressions and their ability to recognize different syntax patterns. For instance, to identify control keywords, something like Syntax HighlightingĬurrently, the syntax highlighting support for PowerShell scripts in VS Code leverages Highlighting mechanism and how semantic highlighting addresses those issues. The rest of this blog post will discuss the shortcomings of the old syntax If you are a theme author, make sure to add to theįor a more complete guide into supporting Semantic Highlighting in your theme, For theme authors: Supporting Semantic Highlighting Open an issue on the theme you’re using to support Semantic Highlighting. The theme you’re using probably doesn’t support it. If you don’t see any difference in highlighting, You have to use a theme that supports Semantic Highlighting.Īll the inbox themes support it and the PowerShell ISE theme supports it but it’s not guaranteed that every theme will. PowerShell Preview extension for Visual Studio Code. You don’t have to do anything to get this feature except for making sure you have at least the I’m excited to share that the first iteration has been released. One of my projects was to add PowerShell semantic highlighting support in VS Code allowing for more accurate highlighting in the editor. I’m Justin and I am currently an intern on the PowerShell team. Semantic Highlighting in the PowerShell Preview extension for Visual Studio Code
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