r...@raf.org writes:
> I have a stored function with code that looks like:

>             raise notice '% %', 'blah_history.original_id', r;

> But I'm getting this compilation error when it tries to load this
> function:

>     ERROR:  too many parameters specified for RAISE

That is ... weird.  The code is checking that the number of % symbols in
the string literal matches the number of comma-separated expressions after
the literal, and it sure looks like those match.

> Which looks fine. The really wierd thing is that this happens when done on a
> debian9 host but when I load the function from another host (my macos laptop)
> with the same function into the same database, it works fine.

Weirder yet.

The only idea that comes to mind is that '%%', with nothing between the
percent signs, means a literal '%' character not two parameter markers.
If the contents of the string literal were '%%' then this is exactly
the error message you'd get.

So here's a long-shot theory: what's in your source code is not a plain
space but something weird like a no-break space, and when you transfer
that text from machine A to machine B, the no-break space is getting
dropped.

                        regards, tom lane

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