Answer a question

Say you have the following text:

abc
123
abc
456
789
abc
abc

I want to remove all "abc" lines and just keep one. I don't mind sorting. The result should be like this:

abc
123
456
789

Answers

Coming in vscode v1.62 is a command to eliminate duplicate lines from a selection:

Delete Duplicate Lines in the Command Palette

or

editor.action.removeDuplicateLines as a command in a keybinding

(there is no default keybinding for this command)

Here is a very interesting extension: Transformer

Features:

• Unique Lines As New Document

• Unique Lines

• Align CSV

• Align To Cursor

• Compact CSV

• Copy To New Document

• Count Duplicate Lines As New Document

• Encode / Decode

• Filter Lines As New Document

• Filter Lines

• Join Lines

• JSON String As Text

• Lines As JSON String Array

• Normalize Diacritical Marks

• Randomize Lines

• Randomize Selections

• Reverse Lines

• Reverse Selections

• Rotate Backward Selections

• Rotate Forward Selections

• Select Highlights

• Select Lines

• Selection As JSON String

• Sort Lines By Length

• Sort Lines

• Sort Selections

• Split Lines After

• Split Lines Before

• Split Lines

• Trim Lines

• Trim Selections

Unique Lines

Removes duplicate lines from the document Operates on selection or current block if no selection

Unique Lines As New Document

Unique lines are opened in a new document Operates on selection or current block if no selection

I haven't played with it much besides the "Unique Lines" command but it seems quite nicely done (including attempting a macro recorder!).