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line = ''
indent = 0
$stdout.sync = true
print "ruby> "
loop do
l = gets
if l.nil?
break if line.empty?
else
line += l
if l =~ /,\s*$/
print "ruby| "
next
end
if l =~ /^\s*(class|module|def|if|unless|case|while|until|for|begin)\b[^_]/
indent += 1
end
if l =~ /^\s*end\b[^_]/
indent -= 1
end
if l =~ /\{\s*(\|.*\|)?\s*$/
indent += 1
end
if l =~ /^\s*\}/
indent -= 1
end
if indent > 0
print "ruby| "
next
end
end
begin
print eval(line).inspect, "\n"
rescue ScriptError, StandardError
printf "ERR: %s\n", $! || 'exception raised'
end
break if l.nil?
line = ''
print "ruby> "
end
print "\n"
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