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Edit summary for version 30 :
[Lua] added '\n'

Version 29

Version 30

Idiom #59 Write to standard error stream

Print the message "x is negative" to standard error (stderr), with integer x value substitution (e.g. "-2 is negative").

Idiom #59 Write to standard error stream

Print the message "x is negative" to standard error (stderr), with integer x value substitution (e.g. "-2 is negative").

Code
io.stderr:write(string.format("%d is negative",-2))
Code
io.stderr:write(string.format("%d is negative\n",-2))