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Surely there is an accepted idiom (or a small number of generally
used idioms) to handle the case where you want to "monitor" a
specific diagnostic message.
I know you can't use MONMSG directly on the diagnostic message.
So I guess you use RCVMSG. How do you set this up so that if the
diagnostic message you were looking for isn't there, everything
proceeds as though you had never looked for the message in the first
place? (Meaning execution continues normally if there are no errors,
but if there is an error, it shows up exactly as it would have had
you not tried to handle the diagnostic message.)
[...]
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