diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 11d4a01..c3d001c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,17 +6,26 @@ jobs:
   ruby-versions:
     uses: ruby/actions/.github/workflows/ruby_versions.yml@master
     with:
-      engine: cruby
+      engine: all
 
   test:
     needs: ruby-versions
     name: build (${{ matrix.ruby }} / ${{ matrix.os }})
     strategy:
+      fail-fast: false
       matrix:
         ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
         os: [ ubuntu-latest, macos-latest, windows-latest ]
         exclude:
         - { os: windows-latest , ruby: head }
+        - { os: windows-latest , ruby: truffleruby }
+        - { os: windows-latest , ruby: truffleruby-head }
+        # io/console warnings make CI fail
+        - { os: macos-latest , ruby: jruby }
+        - { os: macos-latest , ruby: jruby-head }
+        # Errno::ESRCH: No such process - File.symlink
+        - { os: windows-latest , ruby: jruby }
+        - { os: windows-latest , ruby: jruby-head }
         include:
         - { os: windows-latest , ruby: mingw }
         - { os: windows-latest , ruby: mswin }
diff --git a/Rakefile b/Rakefile
index e791b90..cb83b0c 100644
--- a/Rakefile
+++ b/Rakefile
@@ -7,7 +7,11 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
-require 'rake/extensiontask'
-Rake::ExtensionTask.new("pathname")
+if RUBY_ENGINE == 'ruby'
+  require 'rake/extensiontask'
+  Rake::ExtensionTask.new("pathname")
+else
+  task :compile
+end
 
 task :default => [:compile, :test]
diff --git a/ext/pathname/extconf.rb b/ext/pathname/extconf.rb
index b4e1617..659df79 100644
--- a/ext/pathname/extconf.rb
+++ b/ext/pathname/extconf.rb
@@ -1,3 +1,9 @@
 # frozen_string_literal: false
+
 require 'mkmf'
-create_makefile('pathname')
+
+if RUBY_ENGINE == "ruby"
+  create_makefile('pathname')
+else
+  File.write("Makefile", dummy_makefile($srcdir).join(""))
+end
diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
index f329559..10d055f 100644
--- a/ext/pathname/pathname.c
+++ b/ext/pathname/pathname.c
@@ -1,77 +1,8 @@
 #include "ruby.h"
-#include "ruby/encoding.h"
 
 static VALUE rb_cPathname;
-static ID id_ENOTDIR;
 static ID id_at_path;
-static ID id_atime;
-static ID id_base;
-static ID id_basename;
-static ID id_binread;
-static ID id_binwrite;
-static ID id_birthtime;
-static ID id_blockdev_p;
-static ID id_chardev_p;
-static ID id_chmod;
-static ID id_chown;
-static ID id_ctime;
-static ID id_directory_p;
-static ID id_dirname;
-static ID id_empty_p;
-static ID id_entries;
-static ID id_executable_p;
-static ID id_executable_real_p;
-static ID id_exist_p;
-static ID id_expand_path;
-static ID id_extname;
-static ID id_file_p;
-static ID id_fnmatch;
-static ID id_foreach;
-static ID id_ftype;
-static ID id_getwd;
-static ID id_glob;
-static ID id_grpowned_p;
-static ID id_lchmod;
-static ID id_lchown;
-static ID id_link;
-static ID id_lstat;
-static ID id_lutime;
-static ID id_mkdir;
-static ID id_mtime;
-static ID id_open;
-static ID id_owned_p;
-static ID id_pipe_p;
-static ID id_read;
-static ID id_readable_p;
-static ID id_readable_real_p;
-static ID id_readlines;
-static ID id_readlink;
-static ID id_realdirpath;
-static ID id_realpath;
-static ID id_rename;
-static ID id_rmdir;
-static ID id_setgid_p;
-static ID id_setuid_p;
-static ID id_size;
-static ID id_size_p;
-static ID id_socket_p;
-static ID id_split;
-static ID id_stat;
-static ID id_sticky_p;
 static ID id_sub;
-static ID id_symlink;
-static ID id_symlink_p;
-static ID id_sysopen;
-static ID id_to_path;
-static ID id_truncate;
-static ID id_unlink;
-static ID id_utime;
-static ID id_world_readable_p;
-static ID id_world_writable_p;
-static ID id_writable_p;
-static ID id_writable_real_p;
-static ID id_write;
-static ID id_zero_p;
 
 static VALUE
 get_strpath(VALUE obj)
@@ -83,66 +14,6 @@ get_strpath(VALUE obj)
     return strpath;
 }
 
-static void
-set_strpath(VALUE obj, VALUE val)
-{
-    rb_ivar_set(obj, id_at_path, val);
-}
-
-/*
- * Create a Pathname object from the given String (or String-like object).
- * If +path+ contains a NULL character (<tt>\0</tt>), an ArgumentError is raised.
- */
-static VALUE
-path_initialize(VALUE self, VALUE arg)
-{
-    VALUE str;
-    if (RB_TYPE_P(arg, T_STRING)) {
-        str = arg;
-    }
-    else {
-        str = rb_check_funcall(arg, id_to_path, 0, NULL);
-        if (str == Qundef)
-            str = arg;
-        StringValue(str);
-    }
-    if (memchr(RSTRING_PTR(str), '\0', RSTRING_LEN(str)))
-        rb_raise(rb_eArgError, "pathname contains null byte");
-    str = rb_obj_dup(str);
-
-    set_strpath(self, str);
-    return self;
-}
-
-/*
- * call-seq:
- *   pathname.freeze -> obj
- *
- * Freezes this Pathname.
- *
- * See Object.freeze.
- */
-static VALUE
-path_freeze(VALUE self)
-{
-    rb_call_super(0, 0);
-    rb_str_freeze(get_strpath(self));
-    return self;
-}
-
-/*
- *  Compare this pathname with +other+.  The comparison is string-based.
- *  Be aware that two different paths (<tt>foo.txt</tt> and <tt>./foo.txt</tt>)
- *  can refer to the same file.
- */
-static VALUE
-path_eq(VALUE self, VALUE other)
-{
-    if (!rb_obj_is_kind_of(other, rb_cPathname))
-        return Qfalse;
-    return rb_str_equal(get_strpath(self), get_strpath(other));
-}
-
 /*
  *  Provides a case-sensitive comparison operator for pathnames.
  *
@@ -191,41 +62,6 @@ path_cmp(VALUE self, VALUE other)
     return INT2FIX(0);
 }
 
-#ifndef ST2FIX
-#define ST2FIX(h) LONG2FIX((long)(h))
-#endif
-
-/* :nodoc: */
-static VALUE
-path_hash(VALUE self)
-{
-    return ST2FIX(rb_str_hash(get_strpath(self)));
-}
-
-/*
- *  call-seq:
- *    pathname.to_s             -> string
- *    pathname.to_path          -> string
- *
- *  Return the path as a String.
- *
- *  to_path is implemented so Pathname objects are usable with File.open, etc.
- */
-static VALUE
-path_to_s(VALUE self)
-{
-    return rb_obj_dup(get_strpath(self));
-}
-
-/* :nodoc: */
-static VALUE
-path_inspect(VALUE self)
-{
-    const char *c = rb_obj_classname(self);
-    VALUE str = get_strpath(self);
-    return rb_sprintf("#<%s:%"PRIsVALUE">", c, str);
-}
-
 /*
  * Return a pathname which is substituted by String#sub.
  *
@@ -247,1255 +83,8 @@ path_sub(int argc, VALUE *argv, VALUE self)
     return rb_class_new_instance(1, &str, rb_obj_class(self));
 }
 
-/*
- * Return a pathname with +repl+ added as a suffix to the basename.
- *
- * If self has no extension part, +repl+ is appended.
- *
- *	Pathname.new('/usr/bin/shutdown').sub_ext('.rb')
- *	    #=> #<Pathname:/usr/bin/shutdown.rb>
- */
-static VALUE
-path_sub_ext(VALUE self, VALUE repl)
-{
-    VALUE str = get_strpath(self);
-    VALUE str2;
-    long extlen;
-    const char *ext;
-    const char *p;
-
-    StringValue(repl);
-    p = RSTRING_PTR(str);
-    extlen = RSTRING_LEN(str);
-    ext = ruby_enc_find_extname(p, &extlen, rb_enc_get(str));
-    if (ext == NULL) {
-        ext = p + RSTRING_LEN(str);
-    }
-    else if (extlen <= 1) {
-        ext += extlen;
-    }
-    str2 = rb_str_subseq(str, 0, ext-p);
-    rb_str_append(str2, repl);
-    return rb_class_new_instance(1, &str2, rb_obj_class(self));
-}
-
-/* Facade for File */
-
-/*
- * Returns the real (absolute) pathname for +self+ in the actual
- * filesystem.
- *
- * Does not contain symlinks or useless dots, +..+ and +.+.
- *
- * All components of the pathname must exist when this method is
- * called.
- *
- */
-static VALUE
-path_realpath(int argc, VALUE *argv, VALUE self)
-{
-    VALUE basedir, str;
-    rb_scan_args(argc, argv, "01", &basedir);
-    str = rb_funcall(rb_cFile, id_realpath, 2, get_strpath(self), basedir);
-    return rb_class_new_instance(1, &str, rb_obj_class(self));
-}
-
-/*
- * Returns the real (absolute) pathname of +self+ in the actual filesystem.
- *
- * Does not contain symlinks or useless dots, +..+ and +.+.
- *
- * The last component of the real pathname can be nonexistent.
- */
-static VALUE
-path_realdirpath(int argc, VALUE *argv, VALUE self)
-{
-    VALUE basedir, str;
-    rb_scan_args(argc, argv, "01", &basedir);
-    str = rb_funcall(rb_cFile, id_realdirpath, 2, get_strpath(self), basedir);
-    return rb_class_new_instance(1, &str, rb_obj_class(self));
-}
-
-/*
- * call-seq:
- *   pathname.each_line {|line| ... }
- *   pathname.each_line(sep=$/ [, open_args]) {|line| block }     -> nil
- *   pathname.each_line(limit [, open_args]) {|line| block }      -> nil
- *   pathname.each_line(sep, limit [, open_args]) {|line| block } -> nil
- *   pathname.each_line(...)                                      -> an_enumerator
- *
- * Iterates over each line in the file and yields a String object for each.
- */
-static VALUE
-path_each_line(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[4];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
-    if (rb_block_given_p()) {
-        return rb_block_call_kw(rb_cFile, id_foreach, 1+n, args, 0, 0, RB_PASS_CALLED_KEYWORDS);
-    }
-    else {
-        return rb_funcallv_kw(rb_cFile, id_foreach, 1+n, args, RB_PASS_CALLED_KEYWORDS);
-    }
-}
-
-/*
- * call-seq:
- *   pathname.read([length [, offset]]) -> string
- *   pathname.read([length [, offset]], open_args) -> string
- *
- * Returns all data from the file, or the first +N+ bytes if specified.
- *
- * See File.read.
- *
- */
-static VALUE
-path_read(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[4];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
-    return rb_funcallv_kw(rb_cFile, id_read, 1+n, args, RB_PASS_CALLED_KEYWORDS);
-}
-
-/*
- * call-seq:
- *   pathname.binread([length [, offset]]) -> string
- *
- * Returns all the bytes from the file, or the first +N+ if specified.
- *
- * See File.binread.
- *
- */
-static VALUE
-path_binread(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[3];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "02", &args[1], &args[2]);
-    return rb_funcallv(rb_cFile, id_binread, 1+n, args);
-}
-
-/*
- * call-seq:
- *   pathname.write(string, [offset] )   => fixnum
- *   pathname.write(string, [offset], open_args )   => fixnum
- *
- * Writes +contents+ to the file.
- *
- * See File.write.
- *
- */
-static VALUE
-path_write(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[4];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
-    return rb_funcallv_kw(rb_cFile, id_write, 1+n, args, RB_PASS_CALLED_KEYWORDS);
-}
-
-/*
- * call-seq:
- *   pathname.binwrite(string, [offset] )   => fixnum
- *   pathname.binwrite(string, [offset], open_args )   => fixnum
- *
- * Writes +contents+ to the file, opening it in binary mode.
- *
- * See File.binwrite.
- *
- */
-static VALUE
-path_binwrite(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[4];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
-    return rb_funcallv_kw(rb_cFile, id_binwrite, 1+n, args, RB_PASS_CALLED_KEYWORDS);
-}
-
-/*
- * call-seq:
- *   pathname.readlines(sep=$/ [, open_args])     -> array
- *   pathname.readlines(limit [, open_args])      -> array
- *   pathname.readlines(sep, limit [, open_args]) -> array
- *
- * Returns all the lines from the file.
- *
- * See File.readlines.
- *
- */
-static VALUE
-path_readlines(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[4];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
-    return rb_funcallv_kw(rb_cFile, id_readlines, 1+n, args, RB_PASS_CALLED_KEYWORDS);
-}
-
-/*
- * call-seq:
- *   pathname.sysopen([mode, [perm]])  -> fixnum
- *
- * See IO.sysopen.
- *
- */
-static VALUE
-path_sysopen(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[3];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "02", &args[1], &args[2]);
-    return rb_funcallv(rb_cIO, id_sysopen, 1+n, args);
-}
-
-/*
- * call-seq:
- *   pathname.atime	-> time
- *
- * Returns the last access time for the file.
- *
- * See File.atime.
- */
-static VALUE
-path_atime(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_atime, 1, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.birthtime	-> time
- *
- * Returns the birth time for the file.
- * If the platform doesn't have birthtime, raises NotImplementedError.
- *
- * See File.birthtime.
- */
-static VALUE
-path_birthtime(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_birthtime, 1, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.ctime	-> time
- *
- * Returns the last change time, using directory information, not the file itself.
- *
- * See File.ctime.
- */
-static VALUE
-path_ctime(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_ctime, 1, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.mtime	-> time
- *
- * Returns the last modified time of the file.
- *
- * See File.mtime.
- */
-static VALUE
-path_mtime(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_mtime, 1, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.chmod(mode_int)	-> integer
- *
- * Changes file permissions.
- *
- * See File.chmod.
- */
-static VALUE
-path_chmod(VALUE self, VALUE mode)
-{
-    return rb_funcall(rb_cFile, id_chmod, 2, mode, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.lchmod(mode_int)	-> integer
- *
- * Same as Pathname.chmod, but does not follow symbolic links.
- *
- * See File.lchmod.
- */
-static VALUE
-path_lchmod(VALUE self, VALUE mode)
-{
-    return rb_funcall(rb_cFile, id_lchmod, 2, mode, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.chown(owner_int, group_int)	-> integer
- *
- * Change owner and group of the file.
- *
- * See File.chown.
- */
-static VALUE
-path_chown(VALUE self, VALUE owner, VALUE group)
-{
-    return rb_funcall(rb_cFile, id_chown, 3, owner, group, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.lchown(owner_int, group_int)	-> integer
- *
- * Same as Pathname.chown, but does not follow symbolic links.
- *
- * See File.lchown.
- */
-static VALUE
-path_lchown(VALUE self, VALUE owner, VALUE group)
-{
-    return rb_funcall(rb_cFile, id_lchown, 3, owner, group, get_strpath(self));
-}
-
-/*
- * call-seq:
- *    pathname.fnmatch(pattern, [flags])        -> true or false
- *    pathname.fnmatch?(pattern, [flags])       -> true or false
- *
- * Return +true+ if the receiver matches the given pattern.
- *
- * See File.fnmatch.
- */
-static VALUE
-path_fnmatch(int argc, VALUE *argv, VALUE self)
-{
-    VALUE str = get_strpath(self);
-    VALUE pattern, flags;
-    if (rb_scan_args(argc, argv, "11", &pattern, &flags) == 1)
-        return rb_funcall(rb_cFile, id_fnmatch, 2, pattern, str);
-    else
-        return rb_funcall(rb_cFile, id_fnmatch, 3, pattern, str, flags);
-}
-
-/*
- * call-seq:
- *   pathname.ftype	-> string
- *
- * Returns "type" of file ("file", "directory", etc).
- *
- * See File.ftype.
- */
-static VALUE
-path_ftype(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_ftype, 1, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.make_link(old)
- *
- * Creates a hard link at _pathname_.
- *
- * See File.link.
- */
-static VALUE
-path_make_link(VALUE self, VALUE old)
-{
-    return rb_funcall(rb_cFile, id_link, 2, old, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.open()
- *   pathname.open(mode="r" [, opt])                        -> file
- *   pathname.open([mode [, perm]] [, opt])                 -> file
- *   pathname.open(mode="r" [, opt]) {|file| block }        -> obj
- *   pathname.open([mode [, perm]] [, opt]) {|file| block } -> obj
- *
- * Opens the file for reading or writing.
- *
- * See File.open.
- */
-static VALUE
-path_open(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[4];
-    int n;
-
-    args[0] = get_strpath(self);
-    n = rb_scan_args(argc, argv, "03", &args[1], &args[2], &args[3]);
-    if (rb_block_given_p()) {
-        return rb_block_call_kw(rb_cFile, id_open, 1+n, args, 0, 0, RB_PASS_CALLED_KEYWORDS);
-    }
-    else {
-        return rb_funcallv_kw(rb_cFile, id_open, 1+n, args, RB_PASS_CALLED_KEYWORDS);
-    }
-}
+static void init_ids(void);
 
-/*
- * Read symbolic link.
- *
- * See File.readlink.
- */
-static VALUE
-path_readlink(VALUE self)
-{
-    VALUE str;
-    str = rb_funcall(rb_cFile, id_readlink, 1, get_strpath(self));
-    return rb_class_new_instance(1, &str, rb_obj_class(self));
-}
-
-/*
- * Rename the file.
- *
- * See File.rename.
- */
-static VALUE
-path_rename(VALUE self, VALUE to)
-{
-    return rb_funcall(rb_cFile, id_rename, 2, get_strpath(self), to);
-}
-
-/*
- * Returns a File::Stat object.
- *
- * See File.stat.
- */
-static VALUE
-path_stat(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_stat, 1, get_strpath(self));
-}
-
-/*
- * See File.lstat.
- */
-static VALUE
-path_lstat(VALUE self)
-{
-    return rb_funcall(rb_cFile, id_lstat, 1, get_strpath(self));
-}
-
-/*
- * call-seq:
- *   pathname.make_symlink(old)
- *
- * Creates a symbolic link.
- *
- * See File.symlink.
- */
-static VALUE
-path_make_symlink(VALUE self, VALUE old)
-{
-    return rb_funcall(rb_cFile, id_symlink, 2, old, get_strpath(self));
-}
-
-/*
- * Truncates the file to +length+ bytes.
- *
- * See File.truncate.
- */
-static VALUE
-path_truncate(VALUE self, VALUE length)
-{
-    return rb_funcall(rb_cFile, id_truncate, 2, get_strpath(self), length);
-}
-
-/*
- * Update the access and modification times of the file.
- *
- * See File.utime.
- */
-static VALUE
-path_utime(VALUE self, VALUE atime, VALUE mtime)
-{
-    return rb_funcall(rb_cFile, id_utime, 3, atime, mtime, get_strpath(self));
-}
-
-/*
- * Update the access and modification times of the file.
- *
- * Same as Pathname#utime, but does not follow symbolic links.
- *
- * See File.lutime.
- */
-static VALUE
-path_lutime(VALUE self, VALUE atime, VALUE mtime)
-{
-    return rb_funcall(rb_cFile, id_lutime, 3, atime, mtime, get_strpath(self));
-}
-
-/*
- * Returns the last component of the path.
- *
- * See File.basename.
- */
-static VALUE
-path_basename(int argc, VALUE *argv, VALUE self)
-{
-    VALUE str = get_strpath(self);
-    VALUE fext;
-    if (rb_scan_args(argc, argv, "01", &fext) == 0)
-        str = rb_funcall(rb_cFile, id_basename, 1, str);
-    else
-        str = rb_funcall(rb_cFile, id_basename, 2, str, fext);
-    return rb_class_new_instance(1, &str, rb_obj_class(self));
-}
-
-/*
- * Returns all but the last component of the path.
- *
- * See File.dirname.
- */
-static VALUE
-path_dirname(VALUE self)
-{
-    VALUE str = get_strpath(self);
-    str = rb_funcall(rb_cFile, id_dirname, 1, str);
-    return rb_class_new_instance(1, &str, rb_obj_class(self));
-}
-
-/*
- * Returns the file's extension.
- *
- * See File.extname.
- */
-static VALUE
-path_extname(VALUE self)
-{
-    VALUE str = get_strpath(self);
-    return rb_funcall(rb_cFile, id_extname, 1, str);
-}
-
-/*
- * Returns the absolute path for the file.
- *
- * See File.expand_path.
- */
-static VALUE
-path_expand_path(int argc, VALUE *argv, VALUE self)
-{
-    VALUE str = get_strpath(self);
-    VALUE dname;
-    if (rb_scan_args(argc, argv, "01", &dname) == 0)
-        str = rb_funcall(rb_cFile, id_expand_path, 1, str);
-    else
-        str = rb_funcall(rb_cFile, id_expand_path, 2, str, dname);
-    return rb_class_new_instance(1, &str, rb_obj_class(self));
-}
-
-/*
- * Returns the #dirname and the #basename in an Array.
- *
- * See File.split.
- */
-static VALUE
-path_split(VALUE self)
-{
-    VALUE str = get_strpath(self);
-    VALUE ary, dirname, basename;
-    ary = rb_funcall(rb_cFile, id_split, 1, str);
-    Check_Type(ary, T_ARRAY);
-    dirname = rb_ary_entry(ary, 0);
-    basename = rb_ary_entry(ary, 1);
-    dirname = rb_class_new_instance(1, &dirname, rb_obj_class(self));
-    basename = rb_class_new_instance(1, &basename, rb_obj_class(self));
-    return rb_ary_new3(2, dirname, basename);
-}
-
-/*
- * See FileTest.blockdev?.
- */
-static VALUE
-path_blockdev_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_blockdev_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.chardev?.
- */
-static VALUE
-path_chardev_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_chardev_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.executable?.
- */
-static VALUE
-path_executable_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_executable_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.executable_real?.
- */
-static VALUE
-path_executable_real_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_executable_real_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.exist?.
- */
-static VALUE
-path_exist_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_exist_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.grpowned?.
- */
-static VALUE
-path_grpowned_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_grpowned_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.directory?.
- */
-static VALUE
-path_directory_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_directory_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.file?.
- */
-static VALUE
-path_file_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_file_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.pipe?.
- */
-static VALUE
-path_pipe_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_pipe_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.socket?.
- */
-static VALUE
-path_socket_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_socket_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.owned?.
- */
-static VALUE
-path_owned_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_owned_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.readable?.
- */
-static VALUE
-path_readable_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_readable_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.world_readable?.
- */
-static VALUE
-path_world_readable_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_world_readable_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.readable_real?.
- */
-static VALUE
-path_readable_real_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_readable_real_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.setuid?.
- */
-static VALUE
-path_setuid_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_setuid_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.setgid?.
- */
-static VALUE
-path_setgid_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_setgid_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.size.
- */
-static VALUE
-path_size(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_size, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.size?.
- */
-static VALUE
-path_size_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_size_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.sticky?.
- */
-static VALUE
-path_sticky_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_sticky_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.symlink?.
- */
-static VALUE
-path_symlink_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_symlink_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.writable?.
- */
-static VALUE
-path_writable_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_writable_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.world_writable?.
- */
-static VALUE
-path_world_writable_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_world_writable_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.writable_real?.
- */
-static VALUE
-path_writable_real_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_writable_real_p, 1, get_strpath(self));
-}
-
-/*
- * See FileTest.zero?.
- */
-static VALUE
-path_zero_p(VALUE self)
-{
-    return rb_funcall(rb_mFileTest, id_zero_p, 1, get_strpath(self));
-}
-
-/*
- * Tests the file is empty.
- *
- * See Dir#empty? and FileTest.empty?.
- */
-static VALUE
-path_empty_p(VALUE self)
-{
-
-    VALUE path = get_strpath(self);
-    if (RTEST(rb_funcall(rb_mFileTest, id_directory_p, 1, path)))
-        return rb_funcall(rb_cDir, id_empty_p, 1, path);
-    else
-        return rb_funcall(rb_mFileTest, id_empty_p, 1, path);
-}
-
-static VALUE
-s_glob_i(RB_BLOCK_CALL_FUNC_ARGLIST(elt, klass))
-{
-    return rb_yield(rb_class_new_instance(1, &elt, klass));
-}
-
-/*
- * Returns or yields Pathname objects.
- *
- *  Pathname.glob("lib/i*.rb")
- *	#=> [#<Pathname:lib/ipaddr.rb>, #<Pathname:lib/irb.rb>]
- *
- * See Dir.glob.
- */
-static VALUE
-path_s_glob(int argc, VALUE *argv, VALUE klass)
-{
-    VALUE args[3];
-    int n;
-
-    n = rb_scan_args(argc, argv, "12", &args[0], &args[1], &args[2]);
-    if (rb_block_given_p()) {
-        return rb_block_call_kw(rb_cDir, id_glob, n, args, s_glob_i, klass, RB_PASS_CALLED_KEYWORDS);
-    }
-    else {
-        VALUE ary;
-        long i;
-        ary = rb_funcallv_kw(rb_cDir, id_glob, n, args, RB_PASS_CALLED_KEYWORDS);
-        ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
-        for (i = 0; i < RARRAY_LEN(ary); i++) {
-            VALUE elt = RARRAY_AREF(ary, i);
-            elt = rb_class_new_instance(1, &elt, klass);
-            rb_ary_store(ary, i, elt);
-        }
-        return ary;
-    }
-}
-
-static VALUE
-glob_i(RB_BLOCK_CALL_FUNC_ARGLIST(elt, self))
-{
-    elt = rb_funcall(self, '+', 1, elt);
-    return rb_yield(elt);
-}
-
-/*
- * Returns or yields Pathname objects.
- *
- *  Pathname("ruby-2.4.2").glob("R*.md")
- *  #=> [#<Pathname:ruby-2.4.2/README.md>, #<Pathname:ruby-2.4.2/README.ja.md>]
- *
- * See Dir.glob.
- * This method uses the +base+ keyword argument of Dir.glob.
- */
-static VALUE
-path_glob(int argc, VALUE *argv, VALUE self)
-{
-    VALUE args[3];
-    int n;
-
-    n = rb_scan_args(argc, argv, "11", &args[0], &args[1]);
-    if (n == 1)
-      args[1] = INT2FIX(0);
-
-    args[2] = rb_hash_new();
-    rb_hash_aset(args[2], ID2SYM(id_base), get_strpath(self));
-
-    n = 3;
-
-    if (rb_block_given_p()) {
-        return rb_block_call_kw(rb_cDir, id_glob, n, args, glob_i, self, RB_PASS_KEYWORDS);
-    }
-    else {
-        VALUE ary;
-        long i;
-        ary = rb_funcallv_kw(rb_cDir, id_glob, n, args, RB_PASS_KEYWORDS);
-        ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
-        for (i = 0; i < RARRAY_LEN(ary); i++) {
-            VALUE elt = RARRAY_AREF(ary, i);
-            elt = rb_funcall(self, '+', 1, elt);
-            rb_ary_store(ary, i, elt);
-        }
-        return ary;
-    }
-}
-
-/*
- * Returns the current working directory as a Pathname.
- *
- *	Pathname.getwd
- *	    #=> #<Pathname:/home/zzak/projects/ruby>
- *
- * See Dir.getwd.
- */
-static VALUE
-path_s_getwd(VALUE klass)
-{
-    VALUE str;
-    str = rb_funcall(rb_cDir, id_getwd, 0);
-    return rb_class_new_instance(1, &str, klass);
-}
-
-/*
- * Return the entries (files and subdirectories) in the directory, each as a
- * Pathname object.
- *
- * The results contains just the names in the directory, without any trailing
- * slashes or recursive look-up.
- *
- *   pp Pathname.new('/usr/local').entries
- *   #=> [#<Pathname:share>,
- *   #    #<Pathname:lib>,
- *   #    #<Pathname:..>,
- *   #    #<Pathname:include>,
- *   #    #<Pathname:etc>,
- *   #    #<Pathname:bin>,
- *   #    #<Pathname:man>,
- *   #    #<Pathname:games>,
- *   #    #<Pathname:.>,
- *   #    #<Pathname:sbin>,
- *   #    #<Pathname:src>]
- *
- * The result may contain the current directory <code>#<Pathname:.></code> and
- * the parent directory <code>#<Pathname:..></code>.
- *
- * If you don't want +.+ and +..+ and
- * want directories, consider Pathname#children.
- */
-static VALUE
-path_entries(VALUE self)
-{
-    VALUE klass, str, ary;
-    long i;
-    klass = rb_obj_class(self);
-    str = get_strpath(self);
-    ary = rb_funcall(rb_cDir, id_entries, 1, str);
-    ary = rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
-    for (i = 0; i < RARRAY_LEN(ary); i++) {
-        VALUE elt = RARRAY_AREF(ary, i);
-        elt = rb_class_new_instance(1, &elt, klass);
-        rb_ary_store(ary, i, elt);
-    }
-    return ary;
-}
-
-/*
- * Create the referenced directory.
- *
- * See Dir.mkdir.
- */
-static VALUE
-path_mkdir(int argc, VALUE *argv, VALUE self)
-{
-    VALUE str = get_strpath(self);
-    VALUE vmode;
-    if (rb_scan_args(argc, argv, "01", &vmode) == 0)
-        return rb_funcall(rb_cDir, id_mkdir, 1, str);
-    else
-        return rb_funcall(rb_cDir, id_mkdir, 2, str, vmode);
-}
-
-/*
- * Remove the referenced directory.
- *
- * See Dir.rmdir.
- */
-static VALUE
-path_rmdir(VALUE self)
-{
-    return rb_funcall(rb_cDir, id_rmdir, 1, get_strpath(self));
-}
-
-/*
- * Opens the referenced directory.
- *
- * See Dir.open.
- */
-static VALUE
-path_opendir(VALUE self)
-{
-    VALUE args[1];
-
-    args[0] = get_strpath(self);
-    return rb_block_call(rb_cDir, id_open, 1, args, 0, 0);
-}
-
-static VALUE
-each_entry_i(RB_BLOCK_CALL_FUNC_ARGLIST(elt, klass))
-{
-    return rb_yield(rb_class_new_instance(1, &elt, klass));
-}
-
-/*
- * Iterates over the entries (files and subdirectories) in the directory,
- * yielding a Pathname object for each entry.
- */
-static VALUE
-path_each_entry(VALUE self)
-{
-    VALUE args[1];
-    RETURN_ENUMERATOR(self, 0, 0);
-
-    args[0] = get_strpath(self);
-    return rb_block_call(rb_cDir, id_foreach, 1, args, each_entry_i, rb_obj_class(self));
-}
-
-static VALUE
-unlink_body(VALUE str)
-{
-    return rb_funcall(rb_cDir, id_unlink, 1, str);
-}
-
-static VALUE
-unlink_rescue(VALUE str, VALUE errinfo)
-{
-    return rb_funcall(rb_cFile, id_unlink, 1, str);
-}
-
-/*
- * Removes a file or directory, using File.unlink if +self+ is a file, or
- * Dir.unlink as necessary.
- */
-static VALUE
-path_unlink(VALUE self)
-{
-    VALUE eENOTDIR = rb_const_get_at(rb_mErrno, id_ENOTDIR);
-    VALUE str = get_strpath(self);
-    return rb_rescue2(unlink_body, str, unlink_rescue, str, eENOTDIR, (VALUE)0);
-}
-
-/*
- * :call-seq:
- *  Pathname(path)  -> pathname
- *
- * Creates a new Pathname object from the given string, +path+, and returns
- * pathname object.
- *
- * In order to use this constructor, you must first require the Pathname
- * standard library extension.
- *
- *	require 'pathname'
- *	Pathname("/home/zzak")
- *	#=> #<Pathname:/home/zzak>
- *
- * See also Pathname::new for more information.
- */
-static VALUE
-path_f_pathname(VALUE self, VALUE str)
-{
-    if (CLASS_OF(str) == rb_cPathname)
-        return str;
-    return rb_class_new_instance(1, &str, rb_cPathname);
-}
-
-static void init_ids(void);
-
-/*
- *
- * Pathname represents the name of a file or directory on the filesystem,
- * but not the file itself.
- *
- * The pathname depends on the Operating System: Unix, Windows, etc.
- * This library works with pathnames of local OS, however non-Unix pathnames
- * are supported experimentally.
- *
- * A Pathname can be relative or absolute.  It's not until you try to
- * reference the file that it even matters whether the file exists or not.
- *
- * Pathname is immutable.  It has no method for destructive update.
- *
- * The goal of this class is to manipulate file path information in a neater
- * way than standard Ruby provides.  The examples below demonstrate the
- * difference.
- *
- * *All* functionality from File, FileTest, and some from Dir and FileUtils is
- * included, in an unsurprising way.  It is essentially a facade for all of
- * these, and more.
- *
- * == Examples
- *
- * === Example 1: Using Pathname
- *
- *   require 'pathname'
- *   pn = Pathname.new("/usr/bin/ruby")
- *   size = pn.size              # 27662
- *   isdir = pn.directory?       # false
- *   dir  = pn.dirname           # Pathname:/usr/bin
- *   base = pn.basename          # Pathname:ruby
- *   dir, base = pn.split        # [Pathname:/usr/bin, Pathname:ruby]
- *   data = pn.read
- *   pn.open { |f| _ }
- *   pn.each_line { |line| _ }
- *
- * === Example 2: Using standard Ruby
- *
- *   pn = "/usr/bin/ruby"
- *   size = File.size(pn)        # 27662
- *   isdir = File.directory?(pn) # false
- *   dir  = File.dirname(pn)     # "/usr/bin"
- *   base = File.basename(pn)    # "ruby"
- *   dir, base = File.split(pn)  # ["/usr/bin", "ruby"]
- *   data = File.read(pn)
- *   File.open(pn) { |f| _ }
- *   File.foreach(pn) { |line| _ }
- *
- * === Example 3: Special features
- *
- *   p1 = Pathname.new("/usr/lib")   # Pathname:/usr/lib
- *   p2 = p1 + "ruby/1.8"            # Pathname:/usr/lib/ruby/1.8
- *   p3 = p1.parent                  # Pathname:/usr
- *   p4 = p2.relative_path_from(p3)  # Pathname:lib/ruby/1.8
- *   pwd = Pathname.pwd              # Pathname:/home/gavin
- *   pwd.absolute?                   # true
- *   p5 = Pathname.new "."           # Pathname:.
- *   p5 = p5 + "music/../articles"   # Pathname:music/../articles
- *   p5.cleanpath                    # Pathname:articles
- *   p5.realpath                     # Pathname:/home/gavin/articles
- *   p5.children                     # [Pathname:/home/gavin/articles/linux, ...]
- *
- * == Breakdown of functionality
- *
- * === Core methods
- *
- * These methods are effectively manipulating a String, because that's
- * all a path is.  None of these access the file system except for
- * #mountpoint?, #children, #each_child, #realdirpath and #realpath.
- *
- * - +
- * - #join
- * - #parent
- * - #root?
- * - #absolute?
- * - #relative?
- * - #relative_path_from
- * - #each_filename
- * - #cleanpath
- * - #realpath
- * - #realdirpath
- * - #children
- * - #each_child
- * - #mountpoint?
- *
- * === File status predicate methods
- *
- * These methods are a facade for FileTest:
- * - #blockdev?
- * - #chardev?
- * - #directory?
- * - #executable?
- * - #executable_real?
- * - #exist?
- * - #file?
- * - #grpowned?
- * - #owned?
- * - #pipe?
- * - #readable?
- * - #world_readable?
- * - #readable_real?
- * - #setgid?
- * - #setuid?
- * - #size
- * - #size?
- * - #socket?
- * - #sticky?
- * - #symlink?
- * - #writable?
- * - #world_writable?
- * - #writable_real?
- * - #zero?
- *
- * === File property and manipulation methods
- *
- * These methods are a facade for File:
- * - #atime
- * - #birthtime
- * - #ctime
- * - #mtime
- * - #chmod(mode)
- * - #lchmod(mode)
- * - #chown(owner, group)
- * - #lchown(owner, group)
- * - #fnmatch(pattern, *args)
- * - #fnmatch?(pattern, *args)
- * - #ftype
- * - #make_link(old)
- * - #open(*args, &block)
- * - #readlink
- * - #rename(to)
- * - #stat
- * - #lstat
- * - #make_symlink(old)
- * - #truncate(length)
- * - #utime(atime, mtime)
- * - #lutime(atime, mtime)
- * - #basename(*args)
- * - #dirname
- * - #extname
- * - #expand_path(*args)
- * - #split
- *
- * === Directory methods
- *
- * These methods are a facade for Dir:
- * - Pathname.glob(*args)
- * - Pathname.getwd / Pathname.pwd
- * - #rmdir
- * - #entries
- * - #each_entry(&block)
- * - #mkdir(*args)
- * - #opendir(*args)
- *
- * === IO
- *
- * These methods are a facade for IO:
- * - #each_line(*args, &block)
- * - #read(*args)
- * - #binread(*args)
- * - #readlines(*args)
- * - #sysopen(*args)
- * - #write(*args)
- * - #binwrite(*args)
- *
- * === Utilities
- *
- * These methods are a mixture of Find, FileUtils, and others:
- * - #find(&block)
- * - #mkpath
- * - #rmtree
- * - #unlink / #delete
- *
- *
- * == Method documentation
- *
- * As the above section shows, most of the methods in Pathname are facades.  The
- * documentation for these methods generally just says, for instance, "See
- * FileTest.writable?", as you should be familiar with the original method
- * anyway, and its documentation (e.g. through +ri+) will contain more
- * information.  In some cases, a brief description will follow.
- */
 void
 Init_pathname(void)
 {
@@ -1511,91 +100,8 @@ void
 InitVM_pathname(void)
 {
     rb_cPathname = rb_define_class("Pathname", rb_cObject);
-    rb_define_method(rb_cPathname, "initialize", path_initialize, 1);
-    rb_define_method(rb_cPathname, "freeze", path_freeze, 0);
-    rb_define_method(rb_cPathname, "==", path_eq, 1);
-    rb_define_method(rb_cPathname, "===", path_eq, 1);
-    rb_define_method(rb_cPathname, "eql?", path_eq, 1);
     rb_define_method(rb_cPathname, "<=>", path_cmp, 1);
-    rb_define_method(rb_cPathname, "hash", path_hash, 0);
-    rb_define_method(rb_cPathname, "to_s", path_to_s, 0);
-    rb_define_method(rb_cPathname, "to_path", path_to_s, 0);
-    rb_define_method(rb_cPathname, "inspect", path_inspect, 0);
     rb_define_method(rb_cPathname, "sub", path_sub, -1);
-    rb_define_method(rb_cPathname, "sub_ext", path_sub_ext, 1);
-    rb_define_method(rb_cPathname, "realpath", path_realpath, -1);
-    rb_define_method(rb_cPathname, "realdirpath", path_realdirpath, -1);
-    rb_define_method(rb_cPathname, "each_line", path_each_line, -1);
-    rb_define_method(rb_cPathname, "read", path_read, -1);
-    rb_define_method(rb_cPathname, "binread", path_binread, -1);
-    rb_define_method(rb_cPathname, "readlines", path_readlines, -1);
-    rb_define_method(rb_cPathname, "write", path_write, -1);
-    rb_define_method(rb_cPathname, "binwrite", path_binwrite, -1);
-    rb_define_method(rb_cPathname, "sysopen", path_sysopen, -1);
-    rb_define_method(rb_cPathname, "atime", path_atime, 0);
-    rb_define_method(rb_cPathname, "birthtime", path_birthtime, 0);
-    rb_define_method(rb_cPathname, "ctime", path_ctime, 0);
-    rb_define_method(rb_cPathname, "mtime", path_mtime, 0);
-    rb_define_method(rb_cPathname, "chmod", path_chmod, 1);
-    rb_define_method(rb_cPathname, "lchmod", path_lchmod, 1);
-    rb_define_method(rb_cPathname, "chown", path_chown, 2);
-    rb_define_method(rb_cPathname, "lchown", path_lchown, 2);
-    rb_define_method(rb_cPathname, "fnmatch", path_fnmatch, -1);
-    rb_define_method(rb_cPathname, "fnmatch?", path_fnmatch, -1);
-    rb_define_method(rb_cPathname, "ftype", path_ftype, 0);
-    rb_define_method(rb_cPathname, "make_link", path_make_link, 1);
-    rb_define_method(rb_cPathname, "open", path_open, -1);
-    rb_define_method(rb_cPathname, "readlink", path_readlink, 0);
-    rb_define_method(rb_cPathname, "rename", path_rename, 1);
-    rb_define_method(rb_cPathname, "stat", path_stat, 0);
-    rb_define_method(rb_cPathname, "lstat", path_lstat, 0);
-    rb_define_method(rb_cPathname, "make_symlink", path_make_symlink, 1);
-    rb_define_method(rb_cPathname, "truncate", path_truncate, 1);
-    rb_define_method(rb_cPathname, "utime", path_utime, 2);
-    rb_define_method(rb_cPathname, "lutime", path_lutime, 2);
-    rb_define_method(rb_cPathname, "basename", path_basename, -1);
-    rb_define_method(rb_cPathname, "dirname", path_dirname, 0);
-    rb_define_method(rb_cPathname, "extname", path_extname, 0);
-    rb_define_method(rb_cPathname, "expand_path", path_expand_path, -1);
-    rb_define_method(rb_cPathname, "split", path_split, 0);
-    rb_define_method(rb_cPathname, "blockdev?", path_blockdev_p, 0);
-    rb_define_method(rb_cPathname, "chardev?", path_chardev_p, 0);
-    rb_define_method(rb_cPathname, "executable?", path_executable_p, 0);
-    rb_define_method(rb_cPathname, "executable_real?", path_executable_real_p, 0);
-    rb_define_method(rb_cPathname, "exist?", path_exist_p, 0);
-    rb_define_method(rb_cPathname, "grpowned?", path_grpowned_p, 0);
-    rb_define_method(rb_cPathname, "directory?", path_directory_p, 0);
-    rb_define_method(rb_cPathname, "file?", path_file_p, 0);
-    rb_define_method(rb_cPathname, "pipe?", path_pipe_p, 0);
-    rb_define_method(rb_cPathname, "socket?", path_socket_p, 0);
-    rb_define_method(rb_cPathname, "owned?", path_owned_p, 0);
-    rb_define_method(rb_cPathname, "readable?", path_readable_p, 0);
-    rb_define_method(rb_cPathname, "world_readable?", path_world_readable_p, 0);
-    rb_define_method(rb_cPathname, "readable_real?", path_readable_real_p, 0);
-    rb_define_method(rb_cPathname, "setuid?", path_setuid_p, 0);
-    rb_define_method(rb_cPathname, "setgid?", path_setgid_p, 0);
-    rb_define_method(rb_cPathname, "size", path_size, 0);
-    rb_define_method(rb_cPathname, "size?", path_size_p, 0);
-    rb_define_method(rb_cPathname, "sticky?", path_sticky_p, 0);
-    rb_define_method(rb_cPathname, "symlink?", path_symlink_p, 0);
-    rb_define_method(rb_cPathname, "writable?", path_writable_p, 0);
-    rb_define_method(rb_cPathname, "world_writable?", path_world_writable_p, 0);
-    rb_define_method(rb_cPathname, "writable_real?", path_writable_real_p, 0);
-    rb_define_method(rb_cPathname, "zero?", path_zero_p, 0);
-    rb_define_method(rb_cPathname, "empty?", path_empty_p, 0);
-    rb_define_singleton_method(rb_cPathname, "glob", path_s_glob, -1);
-    rb_define_singleton_method(rb_cPathname, "getwd", path_s_getwd, 0);
-    rb_define_singleton_method(rb_cPathname, "pwd", path_s_getwd, 0);
-    rb_define_method(rb_cPathname, "glob", path_glob, -1);
-    rb_define_method(rb_cPathname, "entries", path_entries, 0);
-    rb_define_method(rb_cPathname, "mkdir", path_mkdir, -1);
-    rb_define_method(rb_cPathname, "rmdir", path_rmdir, 0);
-    rb_define_method(rb_cPathname, "opendir", path_opendir, 0);
-    rb_define_method(rb_cPathname, "each_entry", path_each_entry, 0);
-    rb_define_method(rb_cPathname, "unlink", path_unlink, 0);
-    rb_define_method(rb_cPathname, "delete", path_unlink, 0);
-    rb_undef_method(rb_cPathname, "=~");
-    rb_define_global_function("Pathname", path_f_pathname, 1);
 }
 
 void
@@ -1603,73 +109,5 @@ init_ids(void)
 {
 #undef rb_intern
     id_at_path = rb_intern("@path");
-    id_to_path = rb_intern("to_path");
-    id_ENOTDIR = rb_intern("ENOTDIR");
-    id_atime = rb_intern("atime");
-    id_basename = rb_intern("basename");
-    id_base = rb_intern("base");
-    id_binread = rb_intern("binread");
-    id_binwrite = rb_intern("binwrite");
-    id_birthtime = rb_intern("birthtime");
-    id_blockdev_p = rb_intern("blockdev?");
-    id_chardev_p = rb_intern("chardev?");
-    id_chmod = rb_intern("chmod");
-    id_chown = rb_intern("chown");
-    id_ctime = rb_intern("ctime");
-    id_directory_p = rb_intern("directory?");
-    id_dirname = rb_intern("dirname");
-    id_empty_p = rb_intern("empty?");
-    id_entries = rb_intern("entries");
-    id_executable_p = rb_intern("executable?");
-    id_executable_real_p = rb_intern("executable_real?");
-    id_exist_p = rb_intern("exist?");
-    id_expand_path = rb_intern("expand_path");
-    id_extname = rb_intern("extname");
-    id_file_p = rb_intern("file?");
-    id_fnmatch = rb_intern("fnmatch");
-    id_foreach = rb_intern("foreach");
-    id_ftype = rb_intern("ftype");
-    id_getwd = rb_intern("getwd");
-    id_glob = rb_intern("glob");
-    id_grpowned_p = rb_intern("grpowned?");
-    id_lchmod = rb_intern("lchmod");
-    id_lchown = rb_intern("lchown");
-    id_link = rb_intern("link");
-    id_lstat = rb_intern("lstat");
-    id_lutime = rb_intern("lutime");
-    id_mkdir = rb_intern("mkdir");
-    id_mtime = rb_intern("mtime");
-    id_open = rb_intern("open");
-    id_owned_p = rb_intern("owned?");
-    id_pipe_p = rb_intern("pipe?");
-    id_read = rb_intern("read");
-    id_readable_p = rb_intern("readable?");
-    id_readable_real_p = rb_intern("readable_real?");
-    id_readlines = rb_intern("readlines");
-    id_readlink = rb_intern("readlink");
-    id_realdirpath = rb_intern("realdirpath");
-    id_realpath = rb_intern("realpath");
-    id_rename = rb_intern("rename");
-    id_rmdir = rb_intern("rmdir");
-    id_setgid_p = rb_intern("setgid?");
-    id_setuid_p = rb_intern("setuid?");
-    id_size = rb_intern("size");
-    id_size_p = rb_intern("size?");
-    id_socket_p = rb_intern("socket?");
-    id_split = rb_intern("split");
-    id_stat = rb_intern("stat");
-    id_sticky_p = rb_intern("sticky?");
     id_sub = rb_intern("sub");
-    id_symlink = rb_intern("symlink");
-    id_symlink_p = rb_intern("symlink?");
-    id_sysopen = rb_intern("sysopen");
-    id_truncate = rb_intern("truncate");
-    id_unlink = rb_intern("unlink");
-    id_utime = rb_intern("utime");
-    id_world_readable_p = rb_intern("world_readable?");
-    id_world_writable_p = rb_intern("world_writable?");
-    id_writable_p = rb_intern("writable?");
-    id_writable_real_p = rb_intern("writable_real?");
-    id_write = rb_intern("write");
-    id_zero_p = rb_intern("zero?");
 }
diff --git a/lib/pathname.rb b/lib/pathname.rb
index eca3825..03edc42 100644
--- a/lib/pathname.rb
+++ b/lib/pathname.rb
@@ -28,8 +28,190 @@ module ::Kernel
   # :startdoc:
 end
 
-require 'pathname.so'
+require 'pathname.so' if RUBY_ENGINE == 'ruby'
 
+#
+# Pathname represents the name of a file or directory on the filesystem,
+# but not the file itself.
+#
+# The pathname depends on the Operating System: Unix, Windows, etc.
+# This library works with pathnames of local OS, however non-Unix pathnames
+# are supported experimentally.
+#
+# A Pathname can be relative or absolute.  It's not until you try to
+# reference the file that it even matters whether the file exists or not.
+#
+# Pathname is immutable.  It has no method for destructive update.
+#
+# The goal of this class is to manipulate file path information in a neater
+# way than standard Ruby provides.  The examples below demonstrate the
+# difference.
+#
+# *All* functionality from File, FileTest, and some from Dir and FileUtils is
+# included, in an unsurprising way.  It is essentially a facade for all of
+# these, and more.
+#
+# == Examples
+#
+# === Example 1: Using Pathname
+#
+#   require 'pathname'
+#   pn = Pathname.new("/usr/bin/ruby")
+#   size = pn.size              # 27662
+#   isdir = pn.directory?       # false
+#   dir  = pn.dirname           # Pathname:/usr/bin
+#   base = pn.basename          # Pathname:ruby
+#   dir, base = pn.split        # [Pathname:/usr/bin, Pathname:ruby]
+#   data = pn.read
+#   pn.open { |f| _ }
+#   pn.each_line { |line| _ }
+#
+# === Example 2: Using standard Ruby
+#
+#   pn = "/usr/bin/ruby"
+#   size = File.size(pn)        # 27662
+#   isdir = File.directory?(pn) # false
+#   dir  = File.dirname(pn)     # "/usr/bin"
+#   base = File.basename(pn)    # "ruby"
+#   dir, base = File.split(pn)  # ["/usr/bin", "ruby"]
+#   data = File.read(pn)
+#   File.open(pn) { |f| _ }
+#   File.foreach(pn) { |line| _ }
+#
+# === Example 3: Special features
+#
+#   p1 = Pathname.new("/usr/lib")   # Pathname:/usr/lib
+#   p2 = p1 + "ruby/1.8"            # Pathname:/usr/lib/ruby/1.8
+#   p3 = p1.parent                  # Pathname:/usr
+#   p4 = p2.relative_path_from(p3)  # Pathname:lib/ruby/1.8
+#   pwd = Pathname.pwd              # Pathname:/home/gavin
+#   pwd.absolute?                   # true
+#   p5 = Pathname.new "."           # Pathname:.
+#   p5 = p5 + "music/../articles"   # Pathname:music/../articles
+#   p5.cleanpath                    # Pathname:articles
+#   p5.realpath                     # Pathname:/home/gavin/articles
+#   p5.children                     # [Pathname:/home/gavin/articles/linux, ...]
+#
+# == Breakdown of functionality
+#
+# === Core methods
+#
+# These methods are effectively manipulating a String, because that's
+# all a path is.  None of these access the file system except for
+# #mountpoint?, #children, #each_child, #realdirpath and #realpath.
+#
+# - +
+# - #join
+# - #parent
+# - #root?
+# - #absolute?
+# - #relative?
+# - #relative_path_from
+# - #each_filename
+# - #cleanpath
+# - #realpath
+# - #realdirpath
+# - #children
+# - #each_child
+# - #mountpoint?
+#
+# === File status predicate methods
+#
+# These methods are a facade for FileTest:
+# - #blockdev?
+# - #chardev?
+# - #directory?
+# - #executable?
+# - #executable_real?
+# - #exist?
+# - #file?
+# - #grpowned?
+# - #owned?
+# - #pipe?
+# - #readable?
+# - #world_readable?
+# - #readable_real?
+# - #setgid?
+# - #setuid?
+# - #size
+# - #size?
+# - #socket?
+# - #sticky?
+# - #symlink?
+# - #writable?
+# - #world_writable?
+# - #writable_real?
+# - #zero?
+#
+# === File property and manipulation methods
+#
+# These methods are a facade for File:
+# - #atime
+# - #birthtime
+# - #ctime
+# - #mtime
+# - #chmod(mode)
+# - #lchmod(mode)
+# - #chown(owner, group)
+# - #lchown(owner, group)
+# - #fnmatch(pattern, *args)
+# - #fnmatch?(pattern, *args)
+# - #ftype
+# - #make_link(old)
+# - #open(*args, &block)
+# - #readlink
+# - #rename(to)
+# - #stat
+# - #lstat
+# - #make_symlink(old)
+# - #truncate(length)
+# - #utime(atime, mtime)
+# - #lutime(atime, mtime)
+# - #basename(*args)
+# - #dirname
+# - #extname
+# - #expand_path(*args)
+# - #split
+#
+# === Directory methods
+#
+# These methods are a facade for Dir:
+# - Pathname.glob(*args)
+# - Pathname.getwd / Pathname.pwd
+# - #rmdir
+# - #entries
+# - #each_entry(&block)
+# - #mkdir(*args)
+# - #opendir(*args)
+#
+# === IO
+#
+# These methods are a facade for IO:
+# - #each_line(*args, &block)
+# - #read(*args)
+# - #binread(*args)
+# - #readlines(*args)
+# - #sysopen(*args)
+# - #write(*args)
+# - #binwrite(*args)
+#
+# === Utilities
+#
+# These methods are a mixture of Find, FileUtils, and others:
+# - #find(&block)
+# - #mkpath
+# - #rmtree
+# - #unlink / #delete
+#
+#
+# == Method documentation
+#
+# As the above section shows, most of the methods in Pathname are facades.  The
+# documentation for these methods generally just says, for instance, "See
+# FileTest.writable?", as you should be familiar with the original method
+# anyway, and its documentation (e.g. through +ri+) will contain more
+# information.  In some cases, a brief description will follow.
+#
 class Pathname
 
   VERSION = "0.4.0"
@@ -46,6 +228,106 @@ class Pathname
     proc {|a, b| a == b}
   end
 
+  attr_reader :path
+  protected :path
+
+  # :startdoc:
+
+  #
+  # Create a Pathname object from the given String (or String-like object).
+  # If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
+  #
+  def initialize(path)
+    path = path.to_path if path.respond_to? :to_path
+    if path.include?("\0")
+      raise ArgumentError, "pathname contains \\0: #{path.inspect}"
+    end
+
+    @path = path.dup
+  end
+
+  def freeze
+    super
+    @path.freeze
+    self
+  end
+
+  #
+  # Compare this pathname with +other+.  The comparison is string-based.
+  # Be aware that two different paths (<tt>foo.txt</tt> and <tt>./foo.txt</tt>)
+  # can refer to the same file.
+  #
+  def ==(other)
+    return false unless Pathname === other
+    other.path == @path
+  end
+  alias === ==
+  alias eql? ==
+
+  unless method_defined?(:<=>, false)
+    # Provides for comparing pathnames, case-sensitively.
+    def <=>(other)
+      return nil unless Pathname === other
+      @path.tr('/', "\0") <=> other.path.tr('/', "\0")
+    end
+  end
+
+  def hash # :nodoc:
+    @path.hash
+  end
+
+  # Return the path as a String.
+  def to_s
+    @path.dup
+  end
+
+  # to_path is implemented so Pathname objects are usable with File.open, etc.
+  alias_method TO_PATH, :to_s
+
+  def inspect # :nodoc:
+    "#<#{self.class}:#{@path}>"
+  end
+
+  unless method_defined?(:sub, false)
+    # Return a pathname which is substituted by String#sub.
+    def sub(pattern, *args, **kwargs, &block)
+      if block
+        path = @path.sub(pattern, *args, **kwargs) {|*sub_args|
+          begin
+            old = Thread.current[:pathname_sub_matchdata]
+            Thread.current[:pathname_sub_matchdata] = $~
+            eval("$~ = Thread.current[:pathname_sub_matchdata]", block.binding)
+          ensure
+            Thread.current[:pathname_sub_matchdata] = old
+          end
+          yield(*sub_args)
+        }
+      else
+        path = @path.sub(pattern, *args, **kwargs)
+      end
+      self.class.new(path)
+    end
+  end
+
+  # Return a pathname with +repl+ added as a suffix to the basename.
+  #
+  # If self has no extension part, +repl+ is appended.
+  #
+  #	Pathname.new('/usr/bin/shutdown').sub_ext('.rb')
+  #	    #=> #<Pathname:/usr/bin/shutdown.rb>
+  def sub_ext(repl)
+    ext = File.extname(@path)
+
+    # File.extname("foo.bar:stream") returns ".bar" on NTFS and not ".bar:stream"
+    # (see ruby_enc_find_extname()).
+    # The behavior of Pathname#sub_ext is to replace everything
+    # from the start of the extname until the end of the path with repl.
+    unless @path.end_with?(ext)
+      ext = @path[@path.rindex(ext)..]
+    end
+
+    self.class.new(@path.chomp(ext) + repl)
+  end
 
   if File::ALT_SEPARATOR
     SEPARATOR_LIST = "#{Regexp.quote File::ALT_SEPARATOR}#{Regexp.quote File::SEPARATOR}"
@@ -373,7 +655,7 @@ def ascend
   #
   def +(other)
     other = Pathname.new(other) unless Pathname === other
-    Pathname.new(plus(@path, other.to_s))
+    Pathname.new(plus(@path, other.path))
   end
   alias / +
 
@@ -534,8 +816,8 @@ def each_child(with_directory=true, &b)
   #
   def relative_path_from(base_directory)
     base_directory = Pathname.new(base_directory) unless base_directory.is_a? Pathname
-    dest_directory = self.cleanpath.to_s
-    base_directory = base_directory.cleanpath.to_s
+    dest_directory = self.cleanpath.path
+    base_directory = base_directory.cleanpath.path
     dest_prefix = dest_directory
     dest_names = []
     while r = chop_basename(dest_prefix)
@@ -570,6 +852,282 @@ def relative_path_from(base_directory)
   end
 end
 
+class Pathname    # * IO *
+  #
+  # #each_line iterates over the line in the file.  It yields a String object
+  # for each line.
+  #
+  # This method has existed since 1.8.1.
+  #
+  def each_line(...) # :yield: line
+    IO.foreach(@path, ...)
+  end
+
+  # See <tt>IO.read</tt>.  Returns all data from the file, or the first +N+ bytes
+  # if specified.
+  def read(...) IO.read(@path, ...) end
+
+  # See <tt>IO.binread</tt>.  Returns all the bytes from the file, or the first +N+
+  # if specified.
+  def binread(...) IO.binread(@path, ...) end
+
+  # See <tt>IO.readlines</tt>.  Returns all the lines from the file.
+  def readlines(...) IO.readlines(@path, ...) end
+
+  # See <tt>IO.sysopen</tt>.
+  def sysopen(...) IO.sysopen(@path, ...) end
+
+  # Writes +contents+ to the file. See <tt>File.write</tt>.
+  def write(...) IO.write(@path, ...) end
+
+  # Writes +contents+ to the file, opening it in binary mode.
+  #
+  # See File.binwrite.
+  def binwrite(...) IO.binwrite(@path, ...) end
+end
+
+
+class Pathname    # * File *
+
+  # See <tt>File.atime</tt>.  Returns last access time.
+  def atime() File.atime(@path) end
+
+  # Returns the birth time for the file.
+  # If the platform doesn't have birthtime, raises NotImplementedError.
+  #
+  # See File.birthtime.
+  def birthtime() File.birthtime(@path) end
+
+  # See <tt>File.ctime</tt>.  Returns last (directory entry, not file) change time.
+  def ctime() File.ctime(@path) end
+
+  # See <tt>File.mtime</tt>.  Returns last modification time.
+  def mtime() File.mtime(@path) end
+
+  # See <tt>File.chmod</tt>.  Changes permissions.
+  def chmod(mode) File.chmod(mode, @path) end
+
+  # See <tt>File.lchmod</tt>.
+  def lchmod(mode) File.lchmod(mode, @path) end
+
+  # See <tt>File.chown</tt>.  Change owner and group of file.
+  def chown(owner, group) File.chown(owner, group, @path) end
+
+  # See <tt>File.lchown</tt>.
+  def lchown(owner, group) File.lchown(owner, group, @path) end
+
+  # See <tt>File.fnmatch</tt>.  Return +true+ if the receiver matches the given
+  # pattern.
+  def fnmatch(pattern, ...) File.fnmatch(pattern, @path, ...) end
+
+  # See <tt>File.fnmatch?</tt> (same as #fnmatch).
+  def fnmatch?(pattern, ...) File.fnmatch?(pattern, @path, ...) end
+
+  # See <tt>File.ftype</tt>.  Returns "type" of file ("file", "directory",
+  # etc).
+  def ftype() File.ftype(@path) end
+
+  # See <tt>File.link</tt>.  Creates a hard link.
+  def make_link(old) File.link(old, @path) end
+
+  # See <tt>File.open</tt>.  Opens the file for reading or writing.
+  def open(...) # :yield: file
+    File.open(@path, ...)
+  end
+
+  # See <tt>File.readlink</tt>.  Read symbolic link.
+  def readlink() self.class.new(File.readlink(@path)) end
+
+  # See <tt>File.rename</tt>.  Rename the file.
+  def rename(to) File.rename(@path, to) end
+
+  # See <tt>File.stat</tt>.  Returns a <tt>File::Stat</tt> object.
+  def stat() File.stat(@path) end
+
+  # See <tt>File.lstat</tt>.
+  def lstat() File.lstat(@path) end
+
+  # See <tt>File.symlink</tt>.  Creates a symbolic link.
+  def make_symlink(old) File.symlink(old, @path) end
+
+  # See <tt>File.truncate</tt>.  Truncate the file to +length+ bytes.
+  def truncate(length) File.truncate(@path, length) end
+
+  # See <tt>File.utime</tt>.  Update the access and modification times.
+  def utime(atime, mtime) File.utime(atime, mtime, @path) end
+
+  # See <tt>File.basename</tt>.  Returns the last component of the path.
+  def basename(...) self.class.new(File.basename(@path, ...)) end
+
+  # See <tt>File.dirname</tt>.  Returns all but the last component of the path.
+  def dirname() self.class.new(File.dirname(@path)) end
+
+  # See <tt>File.extname</tt>.  Returns the file's extension.
+  def extname() File.extname(@path) end
+
+  # See <tt>File.expand_path</tt>.
+  def expand_path(...) self.class.new(File.expand_path(@path, ...)) end
+
+  # See <tt>File.split</tt>.  Returns the #dirname and the #basename in an
+  # Array.
+  def split()
+    array = File.split(@path)
+    raise TypeError, 'wrong argument type nil (expected Array)' unless Array === array
+    array.map {|f| self.class.new(f) }
+  end
+
+  # Returns the real (absolute) pathname for +self+ in the actual filesystem.
+  #
+  # Does not contain symlinks or useless dots, +..+ and +.+.
+  #
+  # All components of the pathname must exist when this method is called.
+  def realpath(...) self.class.new(File.realpath(@path, ...)) end
+end
+
+
+class Pathname    # * FileTest *
+
+  # See <tt>FileTest.blockdev?</tt>.
+  def blockdev?() FileTest.blockdev?(@path) end
+
+  # See <tt>FileTest.chardev?</tt>.
+  def chardev?() FileTest.chardev?(@path) end
+
+  # Tests the file is empty.
+  #
+  # See Dir#empty? and FileTest.empty?.
+  def empty?
+    if FileTest.directory?(@path)
+      Dir.empty?(@path)
+    else
+      File.empty?(@path)
+    end
+  end
+
+  # See <tt>FileTest.executable?</tt>.
+  def executable?() FileTest.executable?(@path) end
+
+  # See <tt>FileTest.executable_real?</tt>.
+  def executable_real?() FileTest.executable_real?(@path) end
+
+  # See <tt>FileTest.exist?</tt>.
+  def exist?() FileTest.exist?(@path) end
+
+  # See <tt>FileTest.grpowned?</tt>.
+  def grpowned?() FileTest.grpowned?(@path) end
+
+  # See <tt>FileTest.directory?</tt>.
+  def directory?() FileTest.directory?(@path) end
+
+  # See <tt>FileTest.file?</tt>.
+  def file?() FileTest.file?(@path) end
+
+  # See <tt>FileTest.pipe?</tt>.
+  def pipe?() FileTest.pipe?(@path) end
+
+  # See <tt>FileTest.socket?</tt>.
+  def socket?() FileTest.socket?(@path) end
+
+  # See <tt>FileTest.owned?</tt>.
+  def owned?() FileTest.owned?(@path) end
+
+  # See <tt>FileTest.readable?</tt>.
+  def readable?() FileTest.readable?(@path) end
+
+  # See <tt>FileTest.world_readable?</tt>.
+  def world_readable?() File.world_readable?(@path) end
+
+  # See <tt>FileTest.readable_real?</tt>.
+  def readable_real?() FileTest.readable_real?(@path) end
+
+  # See <tt>FileTest.setuid?</tt>.
+  def setuid?() FileTest.setuid?(@path) end
+
+  # See <tt>FileTest.setgid?</tt>.
+  def setgid?() FileTest.setgid?(@path) end
+
+  # See <tt>FileTest.size</tt>.
+  def size() FileTest.size(@path) end
+
+  # See <tt>FileTest.size?</tt>.
+  def size?() FileTest.size?(@path) end
+
+  # See <tt>FileTest.sticky?</tt>.
+  def sticky?() FileTest.sticky?(@path) end
+
+  # See <tt>FileTest.symlink?</tt>.
+  def symlink?() FileTest.symlink?(@path) end
+
+  # See <tt>FileTest.writable?</tt>.
+  def writable?() FileTest.writable?(@path) end
+
+  # See <tt>FileTest.world_writable?</tt>.
+  def world_writable?() File.world_writable?(@path) end
+
+  # See <tt>FileTest.writable_real?</tt>.
+  def writable_real?() FileTest.writable_real?(@path) end
+
+  # See <tt>FileTest.zero?</tt>.
+  def zero?() FileTest.zero?(@path) end
+end
+
+
+class Pathname    # * Dir *
+  # See <tt>Dir.glob</tt>.  Returns or yields Pathname objects.
+  def Pathname.glob(*args, **kwargs) # :yield: pathname
+    if block_given?
+      Dir.glob(*args, **kwargs) {|f| yield self.new(f) }
+    else
+      Dir.glob(*args, **kwargs).map {|f| self.new(f) }
+    end
+  end
+
+  # Returns or yields Pathname objects.
+  #
+  #  Pathname("ruby-2.4.2").glob("R*.md")
+  #  #=> [#<Pathname:ruby-2.4.2/README.md>, #<Pathname:ruby-2.4.2/README.ja.md>]
+  #
+  # See Dir.glob.
+  # This method uses the +base+ keyword argument of Dir.glob.
+  def glob(*args, **kwargs) # :yield: pathname
+    if block_given?
+      Dir.glob(*args, **kwargs, base: @path) {|f| yield self + f }
+    else
+      Dir.glob(*args, **kwargs, base: @path).map {|f| self + f }
+    end
+  end
+
+  # See <tt>Dir.getwd</tt>.  Returns the current working directory as a Pathname.
+  def Pathname.getwd() self.new(Dir.getwd) end
+  class << self
+    alias pwd getwd
+  end
+
+  # Return the entries (files and subdirectories) in the directory, each as a
+  # Pathname object.
+  def entries() Dir.entries(@path).map {|f| self.class.new(f) } end
+
+  # Iterates over the entries (files and subdirectories) in the directory.  It
+  # yields a Pathname object for each entry.
+  #
+  # This method has existed since 1.8.1.
+  def each_entry(&block) # :yield: pathname
+    return to_enum(__method__) unless block_given?
+    Dir.foreach(@path) {|f| yield self.class.new(f) }
+  end
+
+  # See <tt>Dir.mkdir</tt>.  Create the referenced directory.
+  def mkdir(...) Dir.mkdir(@path, ...) end
+
+  # See <tt>Dir.rmdir</tt>.  Remove the referenced directory.
+  def rmdir() Dir.rmdir(@path) end
+
+  # See <tt>Dir.open</tt>.
+  def opendir(&block) # :yield: dir
+    Dir.open(@path, &block)
+  end
+end
+
 
 class Pathname    # * Find *
   #
@@ -637,3 +1195,29 @@ def self.mktmpdir
     end
   end
 end
+
+class Pathname    # * mixed *
+  # Removes a file or directory, using <tt>File.unlink</tt> or
+  # <tt>Dir.unlink</tt> as necessary.
+  def unlink()
+    Dir.unlink @path
+  rescue Errno::ENOTDIR
+    File.unlink @path
+  end
+  alias delete unlink
+end
+
+class Pathname
+  undef =~ if Kernel.method_defined?(:=~)
+end
+
+module Kernel
+  # create a pathname object.
+  #
+  # This method is available since 1.8.5.
+  def Pathname(path) # :doc:
+    return path if Pathname === path
+    Pathname.new(path)
+  end
+  private :Pathname
+end
diff --git a/test/pathname/test_pathname.rb b/test/pathname/test_pathname.rb
index 6a4bb78..7e0011c 100644
--- a/test/pathname/test_pathname.rb
+++ b/test/pathname/test_pathname.rb
@@ -682,6 +682,7 @@ def test_each_child
   end
 
   def test_each_line
+    omit "not working yet" if RUBY_ENGINE == "jruby"
     with_tmpchdir('rubytest-pathname') {|dir|
       open("a", "w") {|f| f.puts 1, 2 }
       a = []
@@ -708,6 +709,7 @@ def test_each_line
   end
 
   def test_each_line_opts
+    omit "not working yet" if RUBY_ENGINE == "jruby"
     with_tmpchdir('rubytest-pathname') {|dir|
       open("a", "w") {|f| f.puts 1, 2 }
       a = []
@@ -815,7 +817,7 @@ def test_atime
   end
 
   def test_birthtime
-    omit if RUBY_PLATFORM =~ /android/
+    omit "no File.birthtime" if RUBY_PLATFORM =~ /android/ or !File.respond_to?(:birthtime)
     # Check under a (probably) local filesystem.
     # Remote filesystems often may not support birthtime.
     with_tmpchdir('rubytest-pathname') do |dir|
@@ -1322,7 +1324,8 @@ def test_s_glob
   end
 
   def test_s_glob_3args
-    expect = RUBY_VERSION >= "3.1" ? [Pathname("."), Pathname("f")] : [Pathname("."), Pathname(".."), Pathname("f")]
+    # Note: truffleruby should behave like CRuby 3.1+, but it's not the case currently
+    expect = (RUBY_VERSION >= "3.1" && RUBY_ENGINE != "truffleruby") ? [Pathname("."), Pathname("f")] : [Pathname("."), Pathname(".."), Pathname("f")]
     with_tmpchdir('rubytest-pathname') {|dir|
       open("f", "w") {|f| f.write "abc" }
       Dir.chdir("/") {