Internal error: can't run a predeclaration without a body #11711
Description
Describe the bug
Hi! If parens rather than braces are used to define the body of a def, NuShell 0.89 will panic when invoking it:
How to reproduce
def a () (echo 1)
a
Backtrace is:
thread 'main' panicked at /Users/nblumhardt/.cargo/registry/src/index.crates.io-6f17d22bba15001f/nu-protocol-0.89.0/src/signature.rs:650:9:
Internal error: can't run a predeclaration without a body
stack backtrace:
0: _rust_begin_unwind
1: core::panicking::panic_fmt
2: <nu_protocol::signature::Predeclaration as nu_protocol::engine::command::Command>::run
3: nu_engine::eval::eval_call
4: nu_engine::eval::eval_expression_with_input
5: nu_engine::eval::eval_element_with_input
6: nu_engine::eval::eval_block
7: nu_cli::util::eval_source
8: nu_cli::repl::evaluate_repl
9: nu::run::run_repl
10: nu::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
Expected behavior
Either reject the def or succeed when calling it.
Screenshots
No response
Configuration
| key | value |
|---|---|
| version | 0.89.0 |
| branch | |
| commit_hash | |
| build_os | macos-aarch64 |
| build_target | aarch64-apple-darwin |
| rust_version | rustc 1.75.0 (82e1608df 2023-12-21) |
| rust_channel | stable-aarch64-apple-darwin |
| cargo_version | cargo 1.75.0 (1d8b05cdd 2023-11-20) |
| build_time | 2024-01-10 08:51:16 +10:00 |
| build_rust_channel | release |
| allocator | mimalloc |
| features | default, sqlite, trash, which, zip |
| installed_plugins |
Additional context
No response