libiberty/at-file.texi

   1 @c This file is designed to be included in manuals that use
   2 @c expandargv.
   3
   4 @item @@@var{file}
   5 Read command-line options from @var{file}.  The options read are
   6 inserted in place of the original @@@var{file} option.  If @var{file}
   7 does not exist, or cannot be read, then the option will be treated
   8 literally, and not removed.
   9
  10 Options in @var{file} are separated by whitespace.  A whitespace
  11 character may be included in an option by surrounding the entire
  12 option in either single or double quotes.  Any character (including a
  13 backslash) may be included by prefixing the character to be included
  14 with a backslash.  The @var{file} may itself contain additional
  15 @@@var{file} options; any such options will be processed recursively.