Fix legacy label regex #3972
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Fix legacy label regex #3972
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Pull Request Overview
This PR fixes a bug with the legacyLabelRegex by resetting its lastIndex before running test(), ensuring that the regex always starts searching from the beginning of the string.
- Resets lastIndex on legacyLabelRegex to prevent stateful matching issues
- Ensures legacy labels are processed correctly when used repeatedly
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When the
legacyLabelRegexis tested multiple times against the same string (as happens most of the time, unless a user-specified label is added), it would start searching from the end of the previous match instead of from the start of the string:“JavaScript RegExp objects are stateful when they have the global or sticky flags set (e.g., /foo/g or /foo/y). They store a lastIndex from the previous match. Using this internally, test() can be used to iterate over multiple matches in a string of text (with capture groups).”
This fixes it by resetting
lastIndexbefore running thetestmethod.