Tabs / Spaces / Screen Compression

[icanhasjonas]

Fix mixed tabs

https://marketplace.visualstudio.com/items?itemName=VisualStudioProductTeam.FixMixedTabs

Show trailing whitespaces in editor

https://marketplace.visualstudio.com/items?itemName=MadsKristensen.TrailingWhitespaceVisualizer

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Empty Line Compression

.. and as a bonus for on-screen realestate
https://marketplace.visualstudio.com/items?itemName=VisualStudioProductTeam.SyntacticLineCompression