POSIX-compliant AWK interpreter written in Go, with CSV support (library)

 GoAWK is a POSIX-compatible version of AWK, and additionally has a CSV
 mode for reading and writing CSV and TSV files.
 .
 Additional features GoAWK has over AWK:
 .
  * It has proper support for CSV and TSV files.
  * It's the only AWK implementation with a code coverage feature.
  * It supports negative field indexes to access fields from the right,
    for example, $-1 refers to the last field.
  * It's embeddable in your Go programs! You can even call custom Go
    functions from your AWK scripts.
  * Most AWK scripts are faster than awk and on a par with gawk, though
    usually slower than mawk.
  * The parser supports 'single-quoted strings' in addition to "double-
    quoted strings", primarily to make Windows one-liners easier when using
    the cmd.exe shell (which uses " as the quote character).
 .
 This package provides the goawk library.