About outputting errors
The custom code generator must output an error to the standard output stream (
stdout
) when it is not able to properly generate a unique code of the proper format.
The output line for the error must:
Start with
0
,
Followed by one or more blank spaces,
Followed by the error message, within double quotation marks.
Example
The following example shows the correct code output format:
0 "
error_message
"
The error message generated by the custom code generator is displayed to the user and written to the log.
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