Lexical structure

• Language uses ASCII. Case of characters is significant.
• The expression tokens may be usually separated by whitespaces and comments.
• Newline works as whitespace only when expression obviously continues to the next line.
• Otherwise newline finishes the expression, like semicolon.

a = 1
b = 1 +
	# continues the previous line
	a -= 2
c = '
	some multiline string
'; d = "another string"
puts a, b, c, d, "-------"

-1
0

        some multiline string
another string
-------
 
 

Embeded documentation

=begin
everything between the line beginning with `=begin' and
the line with `=end' is skipped by the interpreter
=end

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