How do I remove duplicate entries from the Vim arglist after adding files multiple times?

Explanation

If you build an arglist incrementally (:args, :argadd, glob expansions), duplicates can sneak in and make :argdo workflows slower or confusing. :argdedupe removes repeated file entries while preserving a clean traversal order, so batch edits and reviews run once per file.

How it works

:argdedupe

• Operates on the current argument list
• Removes duplicate file paths from that list
• Leaves you with a canonical set of targets for :next, :argdo, and related commands

This is especially useful after combining multiple globs or rerunning setup commands in a long editing session.

Example

Imagine your arglist currently includes:

src/a.go src/b.go src/a.go src/c.go src/b.go

After running :argdedupe, it becomes:

src/a.go src/b.go src/c.go

Now :argdo operations execute exactly once per file.

Tips

• Run :args before and after to inspect the arglist state.
• Use this before project-wide substitutions to avoid accidental duplicate writes.