Fossil

    const char *zRevision = find_option("revision", "r", 1);

    /* We should be done with options.. */
    verify_all_options();

    file_tree_name(g.argv[2], &fname, 0, 1);
    if( zRevision ){
      historical_version_of_file(zRevision, blob_str(&fname), &record, 0,0,0,0);
    }else{
      int rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B %s",
                       &fname, filename_collation());
      if( rid==0 ){
        fossil_fatal("no history for file: %b", &fname);
      }
      content_get(rid, &record);

**    -R|--repository FILE       Extract artifacts from repository FILE
**    -r VERSION                 The specific check-in containing the file
**
** See also: finfo
*/
void cat_cmd(void){
  int i;
  int rc;
  Blob content, fname;
  const char *zRev;
  db_find_and_open_repository(0, 0);
  zRev = find_option("r","r",1);

  /* We should be done with options.. */
  verify_all_options();

  for(i=2; i<g.argc; i++){
    file_tree_name(g.argv[i], &fname, 0, 1);
    blob_zero(&content);
    rc = historical_version_of_file(zRev, blob_str(&fname), &content, 0,0,0,2);
    if( rc==2 ){
      fossil_fatal("no such file: %s", g.argv[i]);
    }
    blob_write_to_file(&content, "-");
    blob_reset(&fname);
    blob_reset(&content);
  }
}

/* Values for the debug= query parameter to finfo */