Info: (m4) Quoted strings

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m4: Quoted strings

 
 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'.  ⇒Changequote, for more information.