Index: trunk/essentials/dev-lang/python/Lib/os.py
===================================================================
--- trunk/essentials/dev-lang/python/Lib/os.py	(revision 3422)
+++ trunk/essentials/dev-lang/python/Lib/os.py	(revision 3426)
@@ -75,6 +75,7 @@
     except ImportError:
         pass
-    # if sys.version.find('EMX GCC') == -1 and sys.platform != 'os2knix':
-    if sys.version.find('EMX GCC') == -1:
+    if sys.platform == 'os2knix':
+        import os2knixpath as path
+    elif sys.version.find('EMX GCC') == -1:
         import ntpath as path
     else:
Index: trunk/essentials/dev-lang/python/Lib/os2knixpath.py
===================================================================
--- trunk/essentials/dev-lang/python/Lib/os2knixpath.py	(revision 3426)
+++ trunk/essentials/dev-lang/python/Lib/os2knixpath.py	(revision 3426)
@@ -0,0 +1,541 @@
+"""Common operations on OS/2 kNIX pathnames.
+
+Instead of importing this module directly, import os and refer to
+this module as os.path.  The "os.path" name is an alias for this
+module on OS/2 kNIX Posix; on other systems (e.g. Mac, Windows),
+os.path provides the same operations in a manner specific to that
+platform, and is an alias to another module (e.g. macpath, ntpath).
+
+This is slightly different from both OS/2 EMX and POSIX, so in order
+to avoid messing up those sources, the kNIX code has got a separate 
+file that drags from both EMX and POSIX.
+"""
+
+import os
+import stat
+
+__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
+           "basename","dirname","commonprefix","getsize","getmtime",
+           "getatime","getctime","islink","exists","lexists","isdir","isfile",
+           "ismount","walk","expanduser","expandvars","normpath","abspath",
+           "samefile","sameopenfile","samestat",
+           "curdir","pardir","sep","pathsep","defpath","altsep","extsep",
+           "devnull","realpath","supports_unicode_filenames",
+           "splitunc"]
+
+# strings representing various path-related bits and pieces
+curdir = '.'
+pardir = '..'
+extsep = '.'
+sep = '/'
+altsep = '\\'
+pathsep = ';'
+defpath = '.;/@unixroot/bin;/@unixroot/usr/bin;/@unixroot/usr/local/bin'
+devnull = 'nul'
+
+# Normalize the case of a pathname.  Trivial in Posix, string.lower on Mac.
+# On MS-DOS this may also turn slashes into backslashes; however, other
+# normalizations (such as optimizing '../' away) are not allowed
+# (another function should be defined to do that).
+
+def normcase(s):
+    """Normalize case of pathname.
+
+    XXX: This needs to call some kLIBC function to do case corrections, but 
+         I'm not up do that right now.
+    """
+    return s.replace('\\', '/')
+
+
+# Return whether a path is absolute.
+# Trivial in Posix, harder on the Mac or MS-DOS.
+# For DOS it is absolute if it starts with a slash or backslash (current
+# volume), or if a pathname after the volume letter and colon / UNC resource
+# starts with a slash or backslash.
+
+def isabs(s):
+    """Test whether a path is absolute"""
+    s = splitdrive(s)[1]
+    return s != '' and s[:1] in '/\\'
+
+
+# Join pathnames.
+# Ignore the previous parts if a part is absolute.
+# Insert a '/' unless the first part is empty or already ends in '/'.
+
+def join(a, *p):
+    """Join two or more pathname components, inserting '/' as needed"""
+    path = a
+    for b in p:
+        if isabs(b):
+            path = b
+        elif path == '' or path[-1:] in '/\\:':
+            path = path + b
+        else:
+            path = path + '/' + b
+    return path
+
+
+# Split a path in a drive specification (a drive letter followed by a
+# colon) and the path specification.
+# It is always true that drivespec + pathspec == p
+def splitdrive(p):
+    """Split a pathname into drive and path specifiers. Returns a 2-tuple
+"(drive,path)";  either part may be empty"""
+    if p[1:2] == ':':
+        return p[0:2], p[2:]
+    return '', p
+
+
+# Parse UNC paths
+def splitunc(p):
+    """Split a pathname into UNC mount point and relative path specifiers.
+
+    Return a 2-tuple (unc, rest); either part may be empty.
+    If unc is not empty, it has the form '//host/mount' (or similar
+    using backslashes).  unc+rest is always the input path.
+    Paths containing drive letters never have an UNC part.
+    """
+    if p[1:2] == ':':
+        return '', p # Drive letter present
+    firstTwo = p[0:2]
+    if firstTwo == '/' * 2 or firstTwo == '\\' * 2:
+        # is a UNC path:
+        # vvvvvvvvvvvvvvvvvvvv equivalent to drive letter
+        # \\machine\mountpoint\directories...
+        #           directory ^^^^^^^^^^^^^^^
+        normp = normcase(p)
+        index = normp.find('/', 2)
+        if index == -1:
+            ##raise RuntimeError, 'illegal UNC path: "' + p + '"'
+            return ("", p)
+        index = normp.find('/', index + 1)
+        if index == -1:
+            index = len(p)
+        return p[:index], p[index:]
+    return '', p
+
+
+# Split a path in head (everything up to the last '/') and tail (the
+# rest).  If the path ends in '/', tail will be empty.  If there is no
+# '/' in the path, head  will be empty.
+# Trailing '/'es are stripped from head unless it is the root.
+
+def split(p):
+    """Split a pathname.  Returns tuple "(head, tail)" where "tail" is
+    everything after the final slash.  Either part may be empty."""
+
+    d, p = splitdrive(p)
+    # set i to index beyond p's last slash
+    i = len(p)
+    while i and p[i-1] not in '/\\':
+        i = i - 1
+    head, tail = p[:i], p[i:]  # now tail has no slashes
+    # remove trailing slashes from head, unless it's all slashes
+    head2 = head
+    while head2 and head2[-1] in '/\\':
+        head2 = head2[:-1]
+    head = head2 or head
+    return d + head, tail
+
+
+# Split a path in root and extension.
+# The extension is everything starting at the last dot in the last
+# pathname component; the root is everything before that.
+# It is always true that root + ext == p.
+
+def splitext(p):
+    """Split the extension from a pathname.
+
+    Extension is everything from the last dot to the end.
+    Return (root, ext), either part may be empty."""
+    root, ext = '', ''
+    for c in p:
+        if c in ['/','\\']:
+            root, ext = root + ext + c, ''
+        elif c == '.':
+            if ext:
+                root, ext = root + ext, c
+            else:
+                ext = c
+        elif ext:
+            ext = ext + c
+        else:
+            root = root + c
+    return root, ext
+
+
+# Return the tail (basename) part of a path.
+
+def basename(p):
+    """Returns the final component of a pathname"""
+    return split(p)[1]
+
+
+# Return the head (dirname) part of a path.
+
+def dirname(p):
+    """Returns the directory component of a pathname"""
+    return split(p)[0]
+
+
+# Return the longest prefix of all list elements.
+
+def commonprefix(m):
+    "Given a list of pathnames, returns the longest common leading component"
+    if not m: return ''
+    s1 = min(m)
+    s2 = max(m)
+    n = min(len(s1), len(s2))
+    for i in xrange(n):
+        if s1[i] != s2[i]:
+            return s1[:i]
+    return s1[:n]
+
+# Get size, mtime, atime of files.
+
+def getsize(filename):
+    """Return the size of a file, reported by os.stat()."""
+    return os.stat(filename).st_size
+
+def getmtime(filename):
+    """Return the last modification time of a file, reported by os.stat()."""
+    return os.stat(filename).st_mtime
+
+def getatime(filename):
+    """Return the last access time of a file, reported by os.stat()."""
+    return os.stat(filename).st_atime
+
+def getctime(filename):
+    """Return the metadata change time of a file, reported by os.stat()."""
+    return os.stat(filename).st_ctime
+
+# Is a path a symbolic link?
+# This will always return false on systems where os.lstat doesn't exist.
+
+def islink(path):
+    """Test whether a path is a symbolic link"""
+    try:
+        st = os.lstat(path)
+    except (os.error, AttributeError):
+        return False
+    return stat.S_ISLNK(st.st_mode)
+
+
+# Does a path exist?
+# This is false for dangling symbolic links.
+
+def exists(path):
+    """Test whether a path exists.  Returns False for broken symbolic links"""
+    try:
+        st = os.stat(path)
+    except os.error:
+        return False
+    return True
+
+
+# Being true for dangling symbolic links is also useful.
+
+def lexists(path):
+    """Test whether a path exists.  Returns True for broken symbolic links"""
+    try:
+        st = os.lstat(path)
+    except os.error:
+        return False
+    return True
+
+
+# Is a path a directory?
+# This follows symbolic links, so both islink() and isdir() can be true
+# for the same path.
+
+def isdir(path):
+    """Test whether a path is a directory"""
+    try:
+        st = os.stat(path)
+    except os.error:
+        return False
+    return stat.S_ISDIR(st.st_mode)
+
+
+# Is a path a regular file?
+# This follows symbolic links, so both islink() and isfile() can be true
+# for the same path.
+
+def isfile(path):
+    """Test whether a path is a regular file"""
+    try:
+        st = os.stat(path)
+    except os.error:
+        return False
+    return stat.S_ISREG(st.st_mode)
+
+
+# Are two filenames really pointing to the same file?
+
+def samefile(f1, f2):
+    """Test whether two pathnames reference the same actual file"""
+    s1 = os.stat(f1)
+    s2 = os.stat(f2)
+    return samestat(s1, s2)
+
+
+# Are two open files really referencing the same file?
+# (Not necessarily the same file descriptor!)
+
+def sameopenfile(fp1, fp2):
+    """Test whether two open file objects reference the same file"""
+    s1 = os.fstat(fp1)
+    s2 = os.fstat(fp2)
+    return samestat(s1, s2)
+
+
+# Are two stat buffers (obtained from stat, fstat or lstat)
+# describing the same file?
+
+def samestat(s1, s2):
+    """Test whether two stat buffers reference the same file"""
+    return s1.st_ino == s2.st_ino and \
+           s1.st_dev == s2.st_dev
+
+
+# Is a path a mount point?  Either a root (with or without drive letter)
+# or an UNC path with at most a / or \ after the mount point.
+
+def ismount(path):
+    """Test whether a path is a mount point (defined as root of drive)
+    XXX: this isn't correct for if path is a symlink!
+    """
+    unc, rest = splitunc(path)
+    if unc:
+        return rest in ("", "/", "\\")
+    p = splitdrive(path)[1]
+    return len(p) == 1 and p[0] in '/\\'
+
+
+# Directory tree walk.
+# For each directory under top (including top itself, but excluding
+# '.' and '..'), func(arg, dirname, filenames) is called, where
+# dirname is the name of the directory and filenames is the list
+# of files (and subdirectories etc.) in the directory.
+# The func may modify the filenames list, to implement a filter,
+# or to impose a different order of visiting.
+
+def walk(top, func, arg):
+    """Directory tree walk with callback function.
+
+    For each directory in the directory tree rooted at top (including top
+    itself, but excluding '.' and '..'), call func(arg, dirname, fnames).
+    dirname is the name of the directory, and fnames a list of the names of
+    the files and subdirectories in dirname (excluding '.' and '..').  func
+    may modify the fnames list in-place (e.g. via del or slice assignment),
+    and walk will only recurse into the subdirectories whose names remain in
+    fnames; this can be used to implement a filter, or to impose a specific
+    order of visiting.  No semantics are defined for, or required of, arg,
+    beyond that arg is always passed to func.  It can be used, e.g., to pass
+    a filename pattern, or a mutable object designed to accumulate
+    statistics.  Passing None for arg is common."""
+    try:
+        names = os.listdir(top)
+    except os.error:
+        return
+    func(arg, top, names)
+    exceptions = ('.', '..')
+    for name in names:
+        if name not in exceptions:
+            name = join(top, name)
+            if isdir(name):
+                walk(name, func, arg)
+
+
+# Expand paths beginning with '~' or '~user'.
+# '~' means $HOME; '~user' means that user's home directory.
+# If the path doesn't begin with '~', or if the user or $HOME is unknown,
+# the path is returned unchanged (leaving error reporting to whatever
+# function is called with the expanded path as argument).
+# See also module 'glob' for expansion of *, ? and [...] in pathnames.
+# (A function should also be defined to do full *sh-style environment
+# variable expansion.)
+
+def expanduser(path):
+    """Expand ~ and ~user constructs.
+
+    If user or $HOME is unknown, do nothing."""
+    if path[:1] != '~':
+        return path
+    i, n = 1, len(path)
+    while i < n and path[i] not in '/\\':
+        i = i + 1
+    if i == 1:
+        if 'HOME' in os.environ:
+            userhome = os.environ['HOME']
+        elif 'HOMEPATH' in os.environ:
+            try:
+                drive = os.environ['HOMEDRIVE']
+            except KeyError:
+                drive = ''
+            userhome = join(drive, os.environ['HOMEPATH'])
+        else:
+            import pwd
+            userhome = pwd.getpwuid(os.getuid()).pw_dir
+    else:
+        import pwd
+        try:
+            pwent = pwd.getpwnam(path[1:i])
+        except KeyError:
+            return path
+        userhome = pwent.pw_dir
+
+    if userhome.endswith('/') or userhome.endswith('\\'):
+        i += 1
+    return userhome + path[i:]
+
+
+# Expand paths containing shell variable substitutions.
+# The following rules apply:
+#       - no expansion within single quotes
+#       - no escape character, except for '$$' which is translated into '$'
+#       - ${varname} is accepted.
+#       - varnames can be made out of letters, digits and the character '_'
+# XXX With COMMAND.COM you can use any characters in a variable name,
+# XXX except '^|<>='.
+
+def expandvars(path):
+    """Expand shell variables of form $var and ${var}.
+
+    Unknown variables are left unchanged."""
+    if '$' not in path:
+        return path
+    import string
+    varchars = string.letters + string.digits + '_-'
+    res = ''
+    index = 0
+    pathlen = len(path)
+    while index < pathlen:
+        c = path[index]
+        if c == '\'':   # no expansion within single quotes
+            path = path[index + 1:]
+            pathlen = len(path)
+            try:
+                index = path.index('\'')
+                res = res + '\'' + path[:index + 1]
+            except ValueError:
+                res = res + path
+                index = pathlen - 1
+        elif c == '$':  # variable or '$$'
+            if path[index + 1:index + 2] == '$':
+                res = res + c
+                index = index + 1
+            elif path[index + 1:index + 2] == '{':
+                path = path[index+2:]
+                pathlen = len(path)
+                try:
+                    index = path.index('}')
+                    var = path[:index]
+                    if var in os.environ:
+                        res = res + os.environ[var]
+                except ValueError:
+                    res = res + path
+                    index = pathlen - 1
+            else:
+                var = ''
+                index = index + 1
+                c = path[index:index + 1]
+                while c != '' and c in varchars:
+                    var = var + c
+                    index = index + 1
+                    c = path[index:index + 1]
+                if var in os.environ:
+                    res = res + os.environ[var]
+                if c != '':
+                    res = res + c
+        else:
+            res = res + c
+        index = index + 1
+    return res
+
+
+# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A/B.
+
+def normpath(path):
+    """Normalize path, eliminating double slashes, etc."""
+    path = path.replace('\\', '/')
+    prefix, path = splitdrive(path)
+    while path[:1] == '/':
+        prefix = prefix + '/'
+        path = path[1:]
+    comps = path.split('/')
+    i = 0
+    while i < len(comps):
+        if comps[i] == '.':
+            del comps[i]
+        elif comps[i] == '..' and i > 0 and comps[i-1] not in ('', '..'):
+            del comps[i-1:i+1]
+            i = i - 1
+        elif comps[i] == '' and i > 0 and comps[i-1] != '':
+            del comps[i]
+        else:
+            i = i + 1
+    # If the path is now empty, substitute '.'
+    if not prefix and not comps:
+        comps.append('.')
+    return prefix + '/'.join(comps)
+
+
+# Return an absolute path.
+def abspath(path):
+    """Return the absolute version of a path"""
+    if not isabs(path):
+        path = join(os.getcwd(), path)
+    return normpath(path)
+
+
+# Return a canonical path (i.e. the absolute location of a file on the
+# filesystem).
+
+def realpath(filename):
+    """Return the canonical path of the specified filename, eliminating any
+symbolic links encountered in the path."""
+    filename.replace('\\', '/') # simpler this way..
+    if isabs(filename):
+        bits = ['/'] + filename.split('/')[1:]
+    else:
+        bits = [''] + filename.split('/')
+
+    for i in range(2, len(bits)+1):
+        component = join(*bits[0:i])
+        # Resolve symbolic links.
+        if islink(component):
+            resolved = _resolve_link(component)
+            if resolved is None:
+                # Infinite loop -- return original component + rest of the path
+                return abspath(join(*([component] + bits[i:])))
+            else:
+                newpath = join(*([resolved] + bits[i:]))
+                return realpath(newpath)
+
+    return abspath(filename)
+
+
+def _resolve_link(path):
+    """Internal helper function.  Takes a path and follows symlinks
+    until we either arrive at something that isn't a symlink, or
+    encounter a path we've seen before (meaning that there's a loop).
+    """
+    paths_seen = []
+    while islink(path):
+        if path in paths_seen:
+            # Already seen this path, so we must have a symlink loop
+            return None
+        paths_seen.append(path)
+        # Resolve where the link points to
+        resolved = os.readlink(path)
+        if not isabs(resolved):
+            dir = dirname(path)
+            path = normpath(join(dir, resolved))
+        else:
+            path = normpath(resolved)
+    return path
+
+supports_unicode_filenames = False
+
