This is a meta-issue meant to track the work in other issues targeting the Release 3.x milestone.

I know 2.0 isn't out yet 🙂 (see #826) but I wanted to create a tracking issue for the 3.x series.

Here's some breaking/difficult changes we want to consider for V3:

• Cleanup redundant code in App/Command #1498
• Fix: Help name consistency among app/commands and subcommands #1489
• Replace code generation with generics where possible/maintainable (First cut at using generics for base flag types #1512 )
• merge altsrc with main package #1058
• Move man page compatibility to separate package #1055
• Add testify, and update tests to use it rather than expect #1695
• Improve testability of *cli.Context (via Release 3.x meta/discussion #833 (comment)) (conflicts with Consolidate all Context code into Command #1587)
• remove EnableBashCompletion in favor of CompletionShells
• consider a different release method (eg. not just merging to master) via Support users who are using GOPATH mode #952 (comment) (this was changed in v2)
• make flags "global" by default, to some degree (this was added into v2)
• Compiled metadata is not used #753
• Add optional check for duplicated string and int type flags. #1071
• Cleanup error handling. Make multiError implement ExitCoder
• Add integration with golangci-lint #1663
• Strictly limit default dependencies to stdlib #1890 ¹
• Ensure all exported structs are usable as "zero value" #1775
• Minimize top-level API surface area for both usability clarity and maintenance reduction #1531
• Build out all of the v3 documentation #1891

Please suggest more! I'll add them to this OP

Update ~January 2023: Progress! And yet, yeah, wish lists balanced with releasing usable software is hard to do. If you're the kind of human who finds themselves reading this, there's a v3.0.0-alpha2 tag now, which should play nicely with go get github.com/urfave/cli/v3@latest. Feedback wanted! ❤️ ~ @meatballhat