Hey Emacs, this is -*- outline -*- mode This is the to-do list for Wget. There is no timetable of when we plan to implement these features -- this is just a list of features we'd like to see in Wget, as well as a list of problems that need fixing. Patches to implement these items are likely to be accepted. The items are not listed in any particular order (except that recently-added items may tend towards the top). Not all of these represent user-visible changes. * Implement a `--disable-dns-cache' option that disables DNS caching. It is trivial to implement; simply avoid calling cache_host_lookup at the end of lookup_host. * Honor `Content-Disposition: XXX; filename="FILE"' when creating the file name. * Should allow retries with multiple downloads when using -O on regular files. As the source comment says: "A possible solution to [rewind not working with multiple downloads] would be to remember the file position in the output document and to seek to that position, instead of rewinding." * Wget shouldn't delete rejected files that were not downloaded, but just found on disk because of `-nc'. For example, `wget -r -nc -A.gif URL' should allow the user to get all the GIFs without removing any of the existing HTML files. * Be careful not to lose username/password information given for the URL on the command line. * Add a --range parameter allowing you to explicitly specify a range of bytes to get from a file over HTTP (FTP only supports ranges ending at the end of the file, though forcibly disconnecting from the server at the desired endpoint might be workable). * If multiple FTP URLs are specified that are on the same host, Wget should re-use the connection rather than opening a new one for each file. * Try to devise a scheme so that, when password is unknown, Wget asks the user for one. * If -c used with -N, check to make sure a file hasn't changed on the server before "continuing" to download it (preventing a bogus hybrid file). * Generalize --html-extension to something like --mime-extensions and have it look at mime.types/mimecap file for preferred extension. Non-HTML files with filenames changed this way would be re-downloaded each time despite -N unless .orig files were saved for them. Since .orig would contain the same data as non-.orig, the latter could be just a link to the former. Another possibility would be to implement a per-directory database called something like .wget_url_mapping containing URLs and their corresponding filenames. * When spanning hosts, there's no way to say that you are only interested in files in a certain directory on _one_ of the hosts (-I and -X apply to all). Perhaps -I and -X should take an optional hostname before the directory? * Add an option to not encode special characters like ' ' and '~' when saving local files. Would be good to have a mode that encodes all special characters (as now), one that encodes none (as above), and one that only encodes a character if it was encoded in the original URL (e.g. %20 but not %7E). * --retr-symlinks should cause wget to traverse links to directories too. * Make wget return non-zero status in more situations, like incorrect HTTP auth. * Make -K compare X.orig to X and move the former on top of the latter if they're the same, rather than leaving identical .orig files laying around. * Make `-k' check for files that were downloaded in the past and convert links to them in newly-downloaded documents. * Add option to clobber existing file names (no `.N' suffixes). * Introduce a concept of "boolean" options. For instance, every boolean option `--foo' would have a `--no-foo' equivalent for turning it off. Get rid of `--foo=no' stuff. Short options would be handled as `-x' vs. `-nx'. * Add option to only list wildcard matches without doing the download. * Add case-insensitivity as an option. * Handle MIME types correctly. There should be an option to (not) retrieve files based on MIME types, e.g. `--accept-types=image/*'. * Implement "persistent" retrieving. In "persistent" mode Wget should treat most of the errors as transient. * Allow time-stamping by arbitrary date. * Allow size limit to files (perhaps with an option to download oversize files up through the limit or not at all, to get more functionality than [u]limit. * Download to .in* when mirroring. * Add an option to delete or move no-longer-existent files when mirroring. * Implement uploading (--upload URL?) in FTP and HTTP. * Rewrite FTP code to allow for easy addition of new commands. It should probably be coded as a simple DFA engine. * Make HTTP timestamping use If-Modified-Since facility. * Implement better spider options. * Add more protocols (e.g. gopher and news), implementing them in a modular fashion. * Implement a concept of "packages" a la mirror. * Add a "rollback" option to have continued retrieval throw away a configurable number of bytes at the end of a file before resuming download. Apparently, some stupid proxies insert a "transfer interrupted" string we need to get rid of. * When using --accept and --reject, you can end up with empty directories. Have Wget any such at the end.