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- Bogus bugs (not our fault!):
- ---------------------------
-
- By far THE BIGGEST source of bug reports to Info-ZIP/zip-bugs is the
- incorrect transfer of zipfiles (or of the UnZip executable itself).
- ALWAYS TRANSFER IN BINARY MODE! This includes ftp transfers and *both*
- ends of a Kermit connection ("set file type binary"). If your copy
- isn't exactly the same size as the original, you made a mistake.
-
- Another common source of errors such as "compression method 8 not sup-
- ported" is the existence of an old version of UnZip somewhere in your
- path. Make sure you're using the version you think you're using; give
- the full path explicitly if necessary. Executing "unzip" without any
- options will print a help screen, at the top of which is the UnZip
- version number and release date; and executing "unzip -v" without any
- zipfile or other options will give information about what compiler was
- used, the target operating system, any special UnZip options, and the
- date of compilation--only for version 5.11 and later, though! (Also,
- under Unix C shell and some Bourne shells, "which unzip" will print
- the path of the unzip you're actually using. Under OS/2 and MS-DOS,
- whch21gr.zip [on SimTel mirror sites] will do the same thing; in addi-
- tion, "which -a unzip" will show *all* copies of unzip in your path.)
-
-
- Bugs (real and/or imagined):
- ---------------------------
-
- - MKS Korn shell: unzip assumes the MKS-style command-line environment
- options are relevant to it, but this is not the case if unzip was called
- by another program (e.g., from a .BAT file). A fix for this exists for
- Borland compilers but not for MSC, Watcom, djgpp, etc.
- - OS/2: for paths with one long component, the .LONGNAME EA may be saved for
- all components (waste of disk space): how to check??
- - VMS: for extracting to other directories, only the VMS-style "-d [.foo]"
- format is accepted; "-d foo" should also be allowed. Long filenames are
- not automatically truncated to 39.39. Even with -o specified, the user
- is queried before overwriting; without -o, there are two levels of query.
- - Novell Netware: Netware drives may clear the archive bit on extracted
- files under OS/2 and/or MS-DOS. UnZip always *tries* to set the archive
- bit, however. [pynq@uchicago, 940527]
- - DEC Ultrix: on long zipfiles, unzip will sometimes fail (bad CRC, not always
- reproducible); this is apparently due either to a hardware bug (cache mem)
- or OS bug (page faults?) [Igor, Jean-loup, bottom of BUGS.long]
- - Pyramid: USE_FWRITE causes CRC errors (???) [Kevin]
- - funzip/more/decryption/no-echo bug: race condition(?) causes terminal to
- be "reset" to no-echo state
- - directory dates/times (special Unix perms?) not restored
- - Macintosh (100200), Atari (020000) external file attributes not interpreted
- correctly (both unzip and zipinfo)
- - pkbug error: zipfile with incorrect csize and/or ucsize--check for end of
- compressed (csize) data in uncompression routines:
- unreduce.c: while (((outpos + outcnt) < ucsize) && (!zipeof)) {
- [James Birdsall, Mark, bottom of BUGS.long]
- - OS/2: directory EAs not restored if directory exists [Kai Uwe, KG27515@uark]
- (subsequent note: no way to determine which EAs are newer ==> cannot
- restore without user input)
- - MS-DOS: Borland executables don't allow other than 80-column, 25/43/50-line
- screen modes (Borland bug) [Michael Stillwell]
-
-
- Features (possible and/or definite):
- -----------------------------------
-
- - put man pages in more "proper" nroff format
- - ignore case for internal filename match on non-Unix systems, unless file-
- specs enclosed in single quotes
- - save/extract Unix mtime/ctime/atime/UID/GID info (Unix extra field)
- - modify to decompress input stream if part of a pipe, but continue using
- central directory if not (BIG job!)--extended local header capability
- - add zipinfo option(s) to sort alphabetically, by date/time, in reverse, etc.
- - add "near" to global vars [Steve Salisbury, 92.4.21]
- - modify set_file_time routines to share common code (macro?)
- - when listing filenames, use '?' for non-printables? [Thomas Wolff, 92.6.1]
- - add zipinfo "in-depth" option? (check local vs. central filenames, etc.)
- - create zipcat program to concatenate zipfiles
- - assembly-language routines?
- - VM/CMS version (Walter Moore, Phil Howard, Chua Kong Sian, others)
- - add -oo option (overwrite and override)? no user queries (if bad password,
- skip file; if disk full, take default action; if VMS special on non-VMS,
- unpack anyway; etc.)
- - add -Q[Q[Q]] option (quiet mode on comments, cautions, warnings and errors)?
- forget -oo, or make synonym? Default level -Q?
- - add OS/2 .INF format helpfiles for UnZip and ZipInfo?
-