why nmap script is so buggy?

[Alva Yi <alva.yi () gmail com>]

Hi,every one:
I have been learning nmap these days, the features are good, the
nselib is extendable, but there is one thing that confuse me, why the
script is so buggy. Here are some examples:
ftp-brute.nse,line 73,
Should be ends with \r\n not \n\n, or you cannot get it work.

Mysql-cis.audit, syntax error; and in the 'check' functions, so many
errors, so you never can get right output!

Nmap is such a popular open source software , why so buggy?
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