Could you give an example of program that prints the same string even after any one character is deleted?

[mrlzla]

F.e. that prints "Hello World" ;)

[mame]

Here you are!

eval = "(puts 'Hello, world!'; exit)#"##"
instance_eval = "(puts 'Hello, world!'; exit)#"##"
/#{eval eval if eval==instance_eval}}/.i rescue##/

eval eval"[eval||='',instance_eval||=''].max_by{|s|s.size}#"##"

The implementation technique is elaborated in my book, "The world of obfuscated, esoteric, artistic programming"! It is written in Japanese, though...

[g105b]

This is fantastic and I want to read your book. Would you ever get it translated to English?