Add API to reopen document with specific CustomTextEditor

[adamerose]

My use case is this:

• I defined a CustomTextEditor for viewing .md files.
• I want to toggle between my custom editor and other editors (including the default plain text one) for the current document
• Currently I do this by running workbench.action.closeActiveEditor chained with .then calling vscode.openWith to open my editor. There are problems with this...
  • It prompts the user with a confirmation dialog if the file has unsaved changes
  • Even if the document is already saved, closing and then reopening it causes the tab and title to briefly disappear/flicker
  • It loses track of undo history

Could there be an addition to the VS Code API that lets you seamlessly switch editors while keeping the file dirty and not losing the undo history?

I tried workbench.action.reopenWithEditor but this seems to behave the same as closing the current editor and opening a new one.