(m4.info) Quoting Arguments

 
 Quoting macro arguments
 =======================
 
    Each argument has leading unquoted whitespace removed.  Within each
 argument, all unquoted parentheses must match.  For example, if FOO is
 a macro,
 
      foo(() (`(') `(')
 
    is a macro call, with one argument, whose value is `() (() ('.
 
    It is common practice to quote all arguments to macros, unless you
 are sure you want the arguments expanded.  Thus, in the above example
 with the parentheses, the `right' way to do it is like this:
 
      foo(`() (() (')
 
    It is, however, in certain cases necessary to leave out quotes for
 some arguments, and there is nothing wrong in doing it.  It just makes
 life a bit harder, if you are not careful.

Info Catalog

(m4.info) Macro Arguments

(m4.info) Macros

(m4.info) Macro expansion

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