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AI-generatedGNU awk FS Regular Expression Behavior with Variable-Length Delimiters
GNU awk (gawk) allows the Field Splitter ( FS ) to be defined as a regular expression, enabling the division of records based on complex patterns rather than single characters. This is particularly useful when processing logs with inconsistent whitespace or multi-character delimiters. A design uncertainty arises when FS is set to a regex that matches variabl