"-f" flag not recognized as alternative to "--features"

[James-Oswald]

Prerequisites

Please put an X between the brackets as you perform the following steps:

• Check that your issue is not already filed:
  https://github.com/leanprover/lean4/issues
• Reduce the issue to a minimal, self-contained, reproducible test case.
  Avoid dependencies to Mathlib or Batteries.
• Test your test case against the latest nightly release, for example on
  https://live.lean-lang.org/#project=lean-nightly
  (You can also use the settings there to switch to “Lean nightly”)

Description

lean -h states that lean -f may be used as shorthand for lean --features.

  -f, --features         display features compiler provides (eg. LLVM support)

while lean --features works as intended, -f is not recognized as a valid flag.

Steps to Reproduce

elan run nightly lean -f

Expected behavior:
Identical output to lean --features

Actual behavior:

/home/james/.elan/toolchains/nightly/bin/lean: invalid option -- 'f'
Unknown command line option
Lean (version 4.12.0-nightly-2024-10-12, x86_64-unknown-linux-gnu, commit a3bc4d235961, Release)
Miscellaneous:
...

Versions

Output of elan run nightly lean -v
Lean (version 4.12.0-nightly-2024-10-12, x86_64-unknown-linux-gnu, commit a3bc4d2, Release)

OS Version: Ubuntu 22.04.3 LTS

Impact

Minimal to no impact, just an inconsistency between information in the help command and actual behavior.

[nomeata]

Thanks for raising this. Care to make a PR that adjusts the help string to reality? Probably the easiest course of action. Ideally before any bike shedding about the CLI interface ensues :-)