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GNU macro processor

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2. Lexical and syntactic conventions

As m4 reads its input, it separates it into tokens. A token is either a name, a quoted string, or any single character, that is not a part of either a name or a string. Input to m4 can also contain comments.

2.1 Names  Macro names
2.2 Quoted strings  Quoting input to m4
2.3 Other tokens  Other kinds of input tokens
2.4 Comments  Comments in m4 input


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