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(gawk.info)Known Bugs

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Known Bugs in `gawk'
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   * The `-F' option for changing the value of `FS' (Note: Command-Line
     Options.)  is not necessary given the command-line
     variable assignment feature; it remains only for backwards
     compatibility.

   * Syntactically invalid single character programs tend to overflow
     the parse stack, generating a rather unhelpful message.  Such
     programs are surprisingly difficult to diagnose in the completely
     general case and the effort to do so really is not worth it.