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Fix aliases to known externals (#4707)

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Genna Wingert 2022-03-03 20:05:55 +01:00 committed by GitHub
parent 52f4c4ba7e
commit 97b3e4a233
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 23 additions and 2 deletions
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25
crates/nu-parser/src/parser.rs
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@ -222,7 +222,27 @@ pub fn parse_external_call(
spans[0]
};
let head_contents = working_set.get_span_contents(head_span);
let head_contents = working_set.get_span_contents(head_span).to_vec();
// If the word is an alias, expand it and re-parse the expression
if let Some(alias_id) = working_set.find_alias(&head_contents) {
let expansion = working_set.get_alias(alias_id);
let expansion_span = span(expansion);
let orig_span = span(&[spans[0], spans[0]]);
let mut new_spans: Vec<Span> = expansion.to_vec();
if spans.len() > 1 {
new_spans.extend(&spans[1..])
}
working_set.enter_scope();
working_set.hide_alias(&head_contents);
let (mut result, err) = parse_external_call(working_set, &new_spans);
working_set.exit_scope();
result.replace_span(working_set, expansion_span, orig_span);
return (result, err);
}
let mut error = None;
@ -232,7 +252,7 @@ pub fn parse_external_call(
Box::new(arg)
} else {
Box::new(Expression {
expr: Expr::String(String::from_utf8_lossy(head_contents).to_string()),
expr: Expr::String(String::from_utf8_lossy(&head_contents).to_string()),
span: head_span,
ty: Type::String,
custom_completion: None,
@ -872,6 +892,7 @@ pub fn parse_call(
let mut new_spans: Vec<Span> = vec![];
new_spans.extend(&spans[0..cmd_start]);
new_spans.extend(expansion);
// TODO: This seems like it should be `pos + 1`. `pos` starts as 0
if spans.len() > pos {
new_spans.extend(&spans[(pos + 1)..]);
}