Support Fraktur ANSI escape sequence

By ke...@twilio.com on September 07, 2013 20:26 (imported from Google Code)

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If I run echo "\033[20mfoobarblahbizbang\033[0m" in the command line, I expect to see Gothic text but instead see text rendered in the default language.

According to the ANSI escape specification in ECMA-48, this escape sequence should produce text rendered in Fraktur (see page 75 here: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf).