File: m4.info,  Node: Quoted strings,  Next: Comments,  Prev: Names,  Up: Syntax

3.2 Quoting input to ‘m4’
=========================

A quoted string is a sequence of characters surrounded by quote strings,
defaulting to ‘`’ and ‘'’, where the nested begin and end quotes within
the string are balanced.  The value of a string token is the text, with
one level of quotes stripped off.  Thus

     `'
     ⇒

is the empty string, and double-quoting turns into single-quoting.

     ``quoted''
     ⇒`quoted'

   The quote characters can be changed at any time, using the builtin
macro ‘changequote’.  *Note Changequote::, for more information.