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Relax syntax mapping rule restrictions to allow brace expansion

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cyqsimon 2024-02-20 14:24:51 +08:00
parent 1b9fc1d5af
commit 75cdabaf13
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1 changed files with 7 additions and 5 deletions
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12
build/syntax_mapping.rs
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@ -53,14 +53,16 @@ struct Matcher(Vec<MatcherSegment>);
///
/// Note that this implementation is rather strict: it will greedily interpret
/// every valid environment variable replacement as such, then immediately
/// hard-error if it finds a '$', '{', or '}' anywhere in the remaining text
/// segments.
/// hard-error if it finds a '$' anywhere in the remaining text segments.
///
/// The reason for this strictness is I currently cannot think of a valid reason
/// why you would ever need '$', '{', or '}' as plaintext in a glob pattern.
/// Therefore any such occurrences are likely human errors.
/// why you would ever need '$' as plaintext in a glob pattern. Therefore any
/// such occurrences are likely human errors.
///
/// If we later discover some edge cases, it's okay to make it more permissive.
///
/// Revision history:
/// - 2024-02-20: allow `{` and `}` (glob brace expansion)
impl FromStr for Matcher {
type Err = anyhow::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
@ -106,7 +108,7 @@ impl FromStr for Matcher {
if non_empty_segments
.iter()
.filter_map(Seg::text)
.any(|t| t.contains(['$', '{', '}']))
.any(|t| t.contains('$'))
{
bail!(r#"Invalid matcher: "{s}""#);
}