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/kcode_gotcha.rb

Created September 23, 2010 02:40
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kcode_gotcha.rb
# $KCODE will change the way your regexps match characters:
puts "\xc6\xb5".gsub(/./,"x") # -> xx
puts "\xc6\xb5".gsub(/./u,"x") # -> x
puts "\xc6\xb5".gsub(/./n,"x") # -> xx
$KCODE='u'
puts "\xc6\xb5".gsub(/./,"x") # -> x (different default!)
puts "\xc6\xb5".gsub(/./u,"x") # -> x
puts "\xc6\xb5".gsub(/./n,"x") # -> xx (/n means no encoding, aka byte-wise matching)
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