In The Old Days

Markup and text processing languages are getting long in tooth:

• SNOBOL (nearly 60 years old)

• Icon (nearly 50 years old)

• HUGO (40 years old)

• OmniMark (30 years old)

• Perl (30 years old, although Perl 6 is an important step forward)

• XSLT (20 years old)

Of these, only HUGO, OmniMark and XSLT provide the convenience of rule-based programming.