How to change language mode programmatically via VS Code extension API?

Question

I have tried vscode.commands.executeCommand('workbench.action.editor.changeLanguageMode', 'JSON');. But it does nothing more than open a panel. And TextDocument.languageId is an readonly property.

Alex · Accepted Answer · 2019-01-09 23:16:44Z

5

It was implemented at some point (1.28.0+ probably):

vscode.languages.setTextDocumentLanguage(activeEditor.document, languageId);

answered Jan 9, 2019 at 23:16

Alex

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dada1134 · Accepted Answer · 2017-07-21 21:41:31Z

1

Currently this is not possible. Here is the corresponding issue on GitHub. You should upvote (thumbs up) it to tell them we want this.

answered Jul 21, 2017 at 21:41

dada1134

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wheredidthatnamecomefrom Over a year ago

Looks like that feature is implemented now.

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