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update try command's help

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This commit is contained in:
Darren Schroeder 2024-06-18 12:45:01 -05:00
parent c171a2b8b7
commit 586e3374f1
1 changed files with 9 additions and 4 deletions
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13
crates/nu-cmd-lang/src/core_commands/try_.rs
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@ -10,7 +10,7 @@ impl Command for Try {
} }
fn usage(&self) -> &str { fn usage(&self) -> &str {
"Try to run a block, if it fails optionally run a catch block." "Try to run a block, if it fails optionally run a catch closure."
} }
fn signature(&self) -> nu_protocol::Signature { fn signature(&self) -> nu_protocol::Signature {
@ -18,7 +18,7 @@ impl Command for Try {
.input_output_types(vec![(Type::Any, Type::Any)]) .input_output_types(vec![(Type::Any, Type::Any)])
.required("try_block", SyntaxShape::Block, "Block to run.") .required("try_block", SyntaxShape::Block, "Block to run.")
.optional( .optional(
"catch_block", "catch_closure",
SyntaxShape::Keyword( SyntaxShape::Keyword(
b"catch".to_vec(), b"catch".to_vec(),
Box::new(SyntaxShape::OneOf(vec![ Box::new(SyntaxShape::OneOf(vec![
@ -26,7 +26,7 @@ impl Command for Try {
SyntaxShape::Closure(Some(vec![SyntaxShape::Any])), SyntaxShape::Closure(Some(vec![SyntaxShape::Any])),
])), ])),
), ),
"Block to run if try block fails.", "Closure to run if try block fails.",
) )
.category(Category::Core) .category(Category::Core)
} }
@ -85,9 +85,14 @@ impl Command for Try {
}, },
Example { Example {
description: "Try to run a missing command", description: "Try to run a missing command",
example: "try { asdfasdf } catch { 'missing' } ", example: "try { asdfasdf } catch { 'missing' }",
result: Some(Value::test_string("missing")), result: Some(Value::test_string("missing")),
}, },
Example {
description: "Try to run a missing command and report the message",
example: "try { asdfasdf } catch { |err| $err.msg }",
result: Some(Value::test_string("External command failed")),
},
] ]
} }
} }