Failed on non-saved file

[boffman]

Hello, I get this error message, if I run the command on a new, unsaved, file:

Running the contributed command: 'extension.filterLineByNotContainInputString' failed.

..if I save the file first, it works. It would be a nice feature, being able to run it on an unsaved buffer :-) Thanks.

[gost-serb]

It's almost done, see issue #21

[valashko]

+1 for this feature! Filtering an unsaved buffer would be very useful.

[alberto-bc]

Same error on "virtual documents". Just tested with their virtual document sample: https://github.com/microsoft/vscode-extension-samples/tree/master/virtual-document-sample