Info Catalog flex: Identifiers flex: Common Patterns flex: Addresses

flex: Quoted Constructs

 
 A.4.3 Quoted Constructs
 -----------------------
 
 C99 String Literal
      'L?\"([^\"\\\n]|(\\['\"?\\abfnrtv])|(\\([0123456]{1,3}))|(\\x[[:xdigit:]]+)|(\\u([[:xdigit:]]{4}))|(\\U([[:xdigit:]]{8})))*\"'
 
 C99 Comment
      '("/*"([^*]|"*"[^/])*"*/")|("/"(\\\n)*"/"[^\n]*)'
 
      Note that in C99, a '//'-style comment may be split across lines,
      and, contrary to popular belief, does not include the trailing '\n'
      character.
 
      A better way to scan '/* */' comments is by line, rather than
      matching possibly huge comments all at once.  This will allow you
      to scan comments of unlimited length, as long as line breaks appear
      at sane intervals.  This is also more efficient when used with
      automatic line number processing.  ⇒option-yylineno.
 
      <INITIAL>{
          "/*"      BEGIN(COMMENT);
      }
      <COMMENT>{
          "*/"      BEGIN(0);
          [^*\n]+   ;
          "*"[^/]   ;
          \n        ;
      }
 

Info Catalog flex: Identifiers flex: Common Patterns flex: Addresses