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globset: support nested alternates

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For example, `**/{node_modules/**/*/{ts,js},crates/**/*.{rs,toml}`.

I originally didn't add this I think for implementation simplicity, but
it turns out that it really isn't much work to do. There might have also
been some odd behavior in the regex engine for dealing with empty
alternates, but that has all been long fixed.

Closes #3048, Closes #3112
This commit is contained in:
Luke Sandberg
2025-05-12 14:51:25 -07:00
committed by Andrew Gallant
parent 2d763a9a1b
commit 43eff4397f
3 changed files with 51 additions and 29 deletions
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7
crates/globset/src/lib.rs
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@@ -182,8 +182,11 @@ pub enum ErrorKind {
UnopenedAlternates,
/// Occurs when a `{` is found without a matching `}`.
UnclosedAlternates,
/// Occurs when an alternating group is nested inside another alternating
/// group, e.g., `{{a,b},{c,d}}`.
/// **DEPRECATED**.
///
/// This error used to occur when an alternating group was nested inside
/// another alternating group, e.g., `{{a,b},{c,d}}`. However, this is now
/// supported and as such this error cannot occur.
NestedAlternates,
/// Occurs when an unescaped '\' is found at the end of a glob.
DanglingEscape,