How to trigger newlines in log messages?

Is it possible for log messages to span multiple lines? I am expecting:

RAISE WARNING 'Line 1\nLine 2';

to result in the following log:

Line 1
Line 2

But instead I get:

Line 1\nLine 2

Any ideas?

It's the same as any other string. Either use non-standard E'' strings to tell PostgreSQL you want escape processing:

RAISE WARNING E'Line 1\nLine 2';

or use SQL-standard strings with literal newlines:

RAISE WARNING 'Line 1
Line 2';

StackExchange Database Administrators Q#76931, answer score: 15