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After a macro is defined (see the previous section), you can use (invoke) it in your document like this:
@macroname {arg1, arg2, ...}
and the result will be just as if you typed the body of macroname at that spot. For example:
@macro foo {p, q}
Together: \p\ & \q\.
@end macro
@foo{a, b}
produces:
Together: a & b.
Thus, the arguments and parameters are separated by commas and delimited by braces; any whitespace after (but not before) a comma is ignored. The braces are required in the invocation (but not the definition), even when the macro takes no arguments, consistent with all other Texinfo commands. For example:
@macro argless {}
No arguments here.
@end macro
@argless{}
produces:
No arguments here.
To insert a comma, brace, or backslash in an argument, prepend a backslash, as in
@macname {\\\{\}\,}
which will pass the (almost certainly error-producing) argument `\{},' to macname.
If the macro is defined to take a single argument, and is invoked without any braces, the entire rest of the line after the macro name is supplied as the argument. For example:
@macro bar {p}
Twice: \p\ & \p\.
@end macro
@bar aah
produces:
Twice: aah & aah.
If the macro is defined to take a single argument, and is invoked with braces, the braced text is passed as the argument, regardless of commas. For example:
@macro bar {p}
Twice: \p\ & \p\.
@end macro
@bar{a,b}
produces:
Twice: a,b & a,b.
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