Aliases

[andreimerlescu]

Added the ability to define an alias using:

figs := figtree.Grow()
figs.NewString("name", "", "Your Name")
figs.WithAlias("name", "n")
figs.Parse()
figs.Usage()

This yields in the usage:

Usage of figtree (powered by figtree v2.0.9):
  -n|-name[=] [String] Your Name

[Copilot]

Pull Request Overview

This PR adds support for aliases in the figtree package. Key changes include:

• Updates to the usage output to show aliases for flags.
• Addition of a new WithAlias API and corresponding interface changes.
• Modifications in flag access methods to resolve flag values by alias and removal of deprecated source functionality.

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
usage.go	Updated Usage() output to include alias flags
types.go	Added WithAlias method to the interface definitions
source.go	Removed source-related functionality
mutations.go	Updated flag retrieval functions to resolve aliases
internals_test.go	Updated test structures to initialize aliases
go.mod	Upgraded some dependency versions
figtree_test.go	Added version and tracking tests
alias_test.go	Added tests to validate alias behavior and conflict cases
alias.go	Implemented the WithAlias method
VERSION	Bumped the project version

Comments suppressed due to low confidence (1)

mutations.go:20

• The extra call to unlock the mutex in the error branch causes a double unlock because of the deferred tree.mu.RUnlock() at the beginning of the function. Removing the redundant unlock is needed to prevent a runtime panic.

tree.mu.RUnlock()