(gperf) Keywords

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 Format for Keyword Entries
 --------------------------
 
    The second keyfile format section contains lines of keywords and any
 associated attributes you might supply.  A line beginning with `#' in
 the first column is considered a comment.  Everything following the `#'
 is ignored, up to and including the following newline.
 
    The first field of each non-comment line is always the key itself.
 It can be given in two ways: as a simple name, i.e., without surrounding
 string quotation marks, or as a string enclosed in double-quotes, in C
 syntax, possibly with backslash escapes like `\"' or `\234' or `\xa8'.
 In either case, it must start right at the beginning of the line,
 without leading whitespace.  In this context, a "field" is considered
 to extend up to, but not include, the first blank, comma, or newline.
 Here is a simple example taken from a partial list of C reserved words:
 
      # These are a few C reserved words, see the c.gperf file
      # for a complete list of ANSI C reserved words.
      unsigned
      sizeof
      switch
      signed
      if
      default
      for
      while
      return
 
    Note that unlike `flex' or `bison' the first `%%' marker may be
 elided if the declaration section is empty.
 
    Additional fields may optionally follow the leading keyword.  Fields
 should be separated by commas, and terminate at the end of line.  What
 these fields mean is entirely up to you; they are used to initialize the
 elements of the user-defined `struct' provided by you in the
 declaration section.  If the `-t' option is _not_ enabled these fields
 are simply ignored.  All previous examples except the last one contain
 keyword attributes.
 

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