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Throw error if \B is used in character class

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This commit is contained in:
Aadhavan Srinivasan
2025-01-30 12:27:22 -05:00
parent 00c39857eb
commit b734d61a03
1 changed files with 3 additions and 0 deletions
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3
regex/postfixNode.go
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@@ -95,6 +95,9 @@ func newEscapedNode(c rune, inCharClass bool) (postfixNode, error) {
toReturn.nodetype = assertionNode toReturn.nodetype = assertionNode
toReturn.contents = append(toReturn.contents, c) toReturn.contents = append(toReturn.contents, c)
} }
if c == 'B' && inCharClass { // Invalid
return postfixNode{}, fmt.Errorf("word boundaries are not allowed in character class")
}
case 'n': // Newline character case 'n': // Newline character
toReturn.nodetype = characterNode toReturn.nodetype = characterNode
toReturn.contents = append(toReturn.contents, '\n') toReturn.contents = append(toReturn.contents, '\n')