Give RPM macro an argument with spaces - macros

Question

Example RPM macro:
%define hello() \
printf 'hello, %{1}.\\n';
I would like to be able to give it macros with spaces in it, as in:
%{hello "Dak Tyson"}
->
printf 'hello, Dak Tyson.\n'
However, it keeps doing this:
%{hello "Dak Tyson"}
->
printf 'hello, "Dak.\n'
In other words, it doesn't interpret the double quotes, but uses them as-is.
Single quotes don't work either:
%{hello 'Dak Tyson'}
->
printf 'hello, 'Dak\.\n'
Nor backslashes:
%{hello Dak\ Tyson}
->
printf 'hello, Dak\.\n'
Nor braces:
%{hello {Dak Tyson}}
->
printf 'hello, {Dak.\n'
Is there any way to give an RPM macro arguments with spaces?

Answer 1

I trawled through the RPM API C code having to do with macro expansion. I found a loop in there which uses spaces to parse out the arguments and (I think) there is no way around this loop. I don't think you can give arguments with spaces.
I did find that macro arguments are safe, though.
My .rpmmacros file:
%hello() '%{1}'
%name Dak Tyson
With the above macros defined, This command:
rpm --eval '%{hello %{name}}'
yields:
'Dak Tyson'
So that if I really needed spaces in my macros definitions, I can define them as macros first.
I also found, incidentally, that nested parameterized macros don't work.
This command:
rpm --eval '%{hello %{hello name}}'
yields:
error: Unterminated {: {hello
2< (empty)
1< (empty)
0< '
'