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(autoconf.info)M4 Quotation


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M4 Quotation
============

   The most common brokenness of existing macros is an improper
quotation.  This section, which users of Autoconf can skip, but which
macro writers _must_ read, first justifies the quotation scheme that
was chosen for Autoconf and then ends with a rule of thumb.
Understanding the former helps one to follow the latter.

Active Characters
Characters that change the behavior of m4
One Macro Call
Quotation and one macro call
Quotation and Nested Macros
Macros calling macros
Changequote is Evil
Worse than INTERCAL: M4 + changequote
Quadrigraphs
Another way to escape special characters
Quotation Rule Of Thumb
One parenthesis, one quote

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