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expr: Fix regex anchor matching behavior with REGEX_OPTION_SINGLELINE

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The previously used `REGEX_OPTION_NONE` allowed anchors (^) and ($) to match across newlines.

New anchor behaviors:
- `^` matches the start of the entire string (`\A`)
- `$` matches the end of the entire string (`\Z`)
This commit is contained in:
Teemu Pätsi 2025-04-26 18:22:22 +03:00
parent 606c0c1f57
commit 8cd51227c6
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1 changed files with 1 additions and 1 deletions
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2
src/uu/expr/src/syntax_tree.rs
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@ -154,7 +154,7 @@ impl StringOp {
let re_string = format!("{prefix}{right}"); let re_string = format!("{prefix}{right}");
let re = Regex::with_options( let re = Regex::with_options(
&re_string, &re_string,
RegexOptions::REGEX_OPTION_NONE, RegexOptions::REGEX_OPTION_SINGLELINE,
Syntax::grep(), Syntax::grep(),
) )
.map_err(|_| ExprError::InvalidRegexExpression)?; .map_err(|_| ExprError::InvalidRegexExpression)?;