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Programming languages with a Lisp-like syntax extension mechanism

I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept?

In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please.

Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?

Possible Duplicate:
Programming languages with a Lisp-like syntax extension mechanism

I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept?

In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please.

Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?

Possible Duplicate:
Programming languages with a Lisp-like syntax extension mechanism

I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept?

EDIT: In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please.

EDIT2: Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?

Possible Duplicate:
Programming languages with a Lisp-like syntax extension mechanism

I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept?

In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please.

Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?

I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept?

EDIT: In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please.

EDIT2: Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?

Possible Duplicate:
Programming languages with a Lisp-like syntax extension mechanism

I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept?

EDIT: In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please.

EDIT2: Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?