I expected:
"return \value failed"
from the following program but instead got
"test() failed"
because I expected the expression
return \value
to fail (without returning) when value is &null.
Why did I get the results that I got?
What is special about the expression "return expr"?
procedure main()
local result
result := test() | "test() failed"
write(image(result)) # <-- this line writes "test() failed"to
standard output
end
procedure test()
local value
value := table(&null)[1]
write(image(value)) # <-- this line writes "&null" to standard output
return \value # <-- this line causes test() to fail
return "return \\value failed" # <-- this line is never reached even
though \value fails
end
------------------------------------------------------------------------------
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