*/
const char *diff_get_binary_glob(void){
  const char *zBinGlob = find_option("binary", 0, 1);
  if( zBinGlob==0 ) zBinGlob = db_get("binary-glob",0);
  return zBinGlob;
}

/*
** The input is a list of file and/or directory names either in the current
** checkout, or in the undo buffer if useUndo is true, or in check-outs
** zFrom and/or zTo if they are not null.  Return a new list that consists
** of only filenames.  Any directories on the input list are expected into
** multiple files in the output list.  The output list uses space obtained
** from malloc() and is NULL terminated.
*/
static char **diff_expand_dirs(
  int argc,                /* Number of entries in argv[] */
  const char **argv,       /* List of files and/or directories to be diffed */
  const char *zFrom,       /* Source check-in name, or NULL */
  const char *zTo,         /* Target check-in name, or NULL */
  int useUndo              /* True if diffing against the undo buffer */
){
  Stmt q;
  int i;
  db_multi_exec(
    "CREATE TEMP TABLE dfiles("
    "  name TEXT PRIMARY KEY,"
    "  path TEXT"
    ") WITHOUT ROWID;"
    "CREATE TEMP TABLE allowed("
    "  fn TEXT PRIMARY KEY"
    ") WITHOUT ROWID;"
  );
  if( useUndo ){
    db_multi_exec(
      "INSERT OR IGNORE INTO allowed(fn)"
      " SELECT pathname FROM undo INTERSECT SELECT pathname FROM vfile;"
    );
  }else if( zTo ){
  }
  db_prepare(&q, "INSERT OR IGNORE INTO dfiles(names) VALUES(:txt)");
  for(i=0; i<argc; i++){
    db_bind_text(&q, ":txt", argv[i]);
    db_step(&q);
    db_reset(&q);
  }
  db_finalize(&q);
  
}

/*
** COMMAND: diff
** COMMAND: gdiff
**
** Usage: %fossil diff|gdiff ?OPTIONS? ?FILE1? ?FILE2 ...?
**
** Show the difference between the current version of each of the FILEs