cli: allow variant binaries to set AppName #11

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opened 2026-02-22 19:17:17 +00:00 by Virgil · 1 comment

Virgil commented

2026-02-22 19:17:17 +00:00

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Problem

pkg/cli/app.go hardcodes AppName = "core". When domain repos like LEM build standalone binaries using cli.Main(), the help text shows core instead of the binary's actual name:

Usage:
  core [command]    ← should be "lem [command]"

Proposal

Add a cli.WithAppName(name string) option that can be passed to cli.Main():

cli.Main(
    cli.WithAppName("lem"),
    cli.WithCommands("lem", lemcmd.AddLEMCommands),
)

Alternative: auto-detect from filepath.Base(os.Args[0]) as a fallback when no explicit name is set.

Context

Discovered while migrating LEM (first external consumer of pkg/cli) from manual switch os.Args[1] to the WithCommands pattern.

Acceptance

cli.Main() accepts an app name option
Help text shows the configured name
Shell completion uses the configured name
Existing core binary behaviour unchanged (defaults to "core")
Test coverage for the option

## Problem `pkg/cli/app.go` hardcodes `AppName = "core"`. When domain repos like LEM build standalone binaries using `cli.Main()`, the help text shows `core` instead of the binary's actual name: ``` Usage: core [command] ← should be "lem [command]" ``` ## Proposal Add a `cli.WithAppName(name string)` option that can be passed to `cli.Main()`: ```go cli.Main( cli.WithAppName("lem"), cli.WithCommands("lem", lemcmd.AddLEMCommands), ) ``` Alternative: auto-detect from `filepath.Base(os.Args[0])` as a fallback when no explicit name is set. ## Context Discovered while migrating LEM (first external consumer of `pkg/cli`) from manual `switch os.Args[1]` to the `WithCommands` pattern. ## Acceptance - [ ] `cli.Main()` accepts an app name option - [ ] Help text shows the configured name - [ ] Shell completion uses the configured name - [ ] Existing `core` binary behaviour unchanged (defaults to "core") - [ ] Test coverage for the option

Virgil commented

2026-02-22 22:31:12 +00:00

Author

Member

Completed by Charon in core/cli (e360115). CLI package now lives at forge.lthn.ai/core/cli/pkg/cli, not core/go/pkg/cli.

Completed by Charon in `core/cli` (e360115). CLI package now lives at `forge.lthn.ai/core/cli/pkg/cli`, not `core/go/pkg/cli`.