diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
@@ -21,7 +21,8 @@ jobs:
           - "24.5"
           - "25.3"
           - "26.3"
-          - "27.1"
+          - "27.2"
+          - "28.2"
         experimental: [false]
         include:
           - emacs_version: snapshot

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -20,6 +20,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Security
 
 
+## [0.9.0] - 2022-10-23
+
+### Changed
+
+- Use new implementation by default ([#263])
+  - Set `(setq editorconfig--legacy-version t)` to use previous one
+
+
 ## [0.8.2] - 2021-08-13
 
 ### Added
@@ -226,7 +234,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 *Undocumented*
 
 
-[Unreleased]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.8.2...HEAD
+[Unreleased]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.9.0...HEAD
+[0.9.0]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.8.2...v0.9.0
 [0.8.2]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.8.1...v0.8.2
 [0.8.1]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.8.0...v0.8.1
 [0.8.0]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.7.14...v0.8.0
@@ -253,6 +262,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [0.3]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.2...v0.3
 [0.2]: https://github.com/editorconfig/editorconfig-emacs/compare/v0.1...v0.2
 [0.1]: https://github.com/editorconfig/editorconfig-emacs/releases/tag/v0.1
+[#263]: https://github.com/editorconfig/editorconfig-emacs/issues/263
 [#260]: https://github.com/editorconfig/editorconfig-emacs/issues/260
 [#258]: https://github.com/editorconfig/editorconfig-emacs/issues/258
 [#255]: https://github.com/editorconfig/editorconfig-emacs/issues/255

diff --git a/README.md b/README.md
@@ -136,26 +136,6 @@ only blocks of `web-mode` by adding following to your init.el:
 ```
 
 
-### `editorconfig-hack-properties-functions`
-
-A list of functions to alter property values before applying them.
-
-These functions will be run after loading \".editorconfig\" files and before
-applying them to current buffer, so that you can alter some properties from
-\".editorconfig\" before they take effect.
-
-For example, Makefile files always use tab characters for indentation: you can
-overwrite \"indent_style\" property when current `major-mode` is
-`makefile-mode`:
-
-``` emacs-lisp
-(add-hook 'editorconfig-hack-properties-functions
-          '(lambda (props)
-             (when (derived-mode-p 'makefile-mode)
-               (puthash 'indent_style "tab" props))))
-
-```
-
 
 ## Troubleshooting
 
@@ -197,6 +177,16 @@ Typically it will occur when the major-mode is not defined using
 Please feel free to submit issues if you find such modes!
 
 
+### `editorconfig-format-buffer` does not work well with lsp-mode
+
+By default, [lsp-mode][] configures indent-region-function so that Emacs uses
+language servers' `textDocument/rangeFormatting` request to format text in
+buffers.
+So EditorConfig settings are ignored unless language servers
+themselves support loading configs from `.editorconfig`.
+
+To avoid this behavior ad-hocly, set `lsp-enable-indentation` to nil.
+
 
 
 ## Submitting Bugs and Feature Requests
@@ -246,3 +236,4 @@ with this program.  If not, see <https://www.gnu.org/licenses/>.
 [EditorConfig C Core]: https://github.com/editorconfig/editorconfig-core-c
 [properties]: https://editorconfig.org/#supported-properties
 [CMake]: https://cmake.org
+[lsp-mode]: https://github.com/emacs-lsp/lsp-mode
diff --git a/editorconfig-core-handle.el b/editorconfig-core-handle.el
@@ -200,8 +200,8 @@ If CONF is not found return nil."
             )
         (while (not (eq (point) point-max))
           (setq line
-                (buffer-substring-no-properties (point-at-bol)
-                                                (point-at-eol)))
+                (buffer-substring-no-properties (line-beginning-position)
+                                                (line-end-position)))
           (setq line
                 (replace-regexp-in-string "\\(^\\| \\)\\(#\\|;\\).*$"
                                           ""

diff --git a/editorconfig.el b/editorconfig.el
@@ -3,7 +3,7 @@
 ;; Copyright (C) 2011-2021 EditorConfig Team
 
 ;; Author: EditorConfig Team <editorconfig@googlegroups.com>
-;; Version: 0.8.2
+;; Version: 0.9.0
 ;; URL: https://github.com/editorconfig/editorconfig-emacs#readme
 ;; Package-Requires: ((cl-lib "0.5") (nadvice "0.3") (emacs "24"))
 
@@ -47,9 +47,7 @@
   (defvar tex-indent-arg)
   (defvar evil-shift-width))
 
-(declare-function editorconfig-core-get-properties-hash
-                  "editorconfig-core"
-                  (&optional file confname confversion))
+(require 'editorconfig-core)
 
 (defgroup editorconfig nil
   "EditorConfig Emacs Plugin.
@@ -95,13 +93,13 @@ your init.el:
 
 Possible known values are:
 
-* `editorconfig-core-get-properties-hash' (default)
+* `editorconfig-core-get-properties-hash\\=' (default)
   * Always use built-in Emacs-Lisp implementation to get properties
 * `editorconfig-get-properties'
-  * Use `editorconfig-get-properties-from-exec' when
+  * Use `editorconfig-get-properties-from-exec\\=' when
     `editorconfig-exec-path' executable is found, otherwise
-    use `editorconfig-core-get-properties-hash'
-* `editorconfig-get-properties-from-exec'
+    use `editorconfig-core-get-properties-hash\\='
+* `editorconfig-get-properties-from-exec\\='
   * Get properties by executing EditorConfig executable"
   :type 'function
   :group 'editorconfig)
@@ -148,6 +146,8 @@ This hook will be run even when there are no matching sections in
 These functions will be run after loading \".editorconfig\" files and before
 applying them to current buffer, so that you can alter some properties from
 \".editorconfig\" before they take effect.
+\(Since 2021/08/30 (v0.9.0): Buffer coding-systems are set before running
+this functions, so this variable cannot be used to change coding-systems.)
 
 For example, Makefiles always use tab characters for indentation: you can
 overwrite \"indent_style\" property when current `major-mode' is a
@@ -162,6 +162,11 @@ This hook will be run even when there are no matching sections in
 \".editorconfig\", or no \".editorconfig\" file was found at all."
   :type 'hook
   :group 'editorconfig)
+(make-obsolete-variable 'editorconfig-hack-properties-functions
+                        "Using `editorconfig-after-apply-functions' instead is recommended,
+    because since 2021/08/30 (v0.9.0) this variable cannot support all properties:
+    charset values will be referenced before running this hook."
+                        "v0.9.0")
 
 (define-obsolete-variable-alias
   'edconf-indentation-alist
@@ -842,11 +847,11 @@ F is that function, and FILENAME and ARGS are arguments passed to F."
                         (format "Error while setting variables from EditorConfig: %S" err))))
     ret))
 
-(defvar editorconfig--enable-20210221-testing nil
-  "Enable testing version of `editorconfig-mode'.
+(defvar editorconfig--legacy-version nil
+  "Use legacy version of editorconfig-mode.
 
-Currently this mode is not well tested yet and can cause unexpected behaviors
-like killing Emacs process or not able to visit files at all.")
+As of 2021/08/30, `editorconfig-mode' uses totally new implementation by
+default.  This flag disables this and go back to previous version.")
 
 ;;;###autoload
 (define-minor-mode editorconfig-mode
@@ -856,7 +861,7 @@ To disable EditorConfig in some buffers, modify
 `editorconfig-exclude-modes' or `editorconfig-exclude-regexps'."
   :global t
   :lighter editorconfig-mode-lighter
-  (if editorconfig--enable-20210221-testing
+  (if (not editorconfig--legacy-version)
       (let ((modehooks '(prog-mode-hook
                           text-mode-hook
                           read-only-mode-hook
@@ -880,7 +885,7 @@ To disable EditorConfig in some buffers, modify
             (remove-hook hook
                          'editorconfig-major-mode-hook))))
 
-    ;; editorconfig--enable-20210221-testing is disabled
+    ;; editorconfig--legacy-version is enabled
     ;; See https://github.com/editorconfig/editorconfig-emacs/issues/141 for why
     ;; not `after-change-major-mode-hook'
     (dolist (hook '(change-major-mode-after-body-hook

diff --git a/ert-tests/editorconfig-2.el b/ert-tests/editorconfig-2.el
diff --git a/ert-tests/editorconfig-core-handle.el b/ert-tests/editorconfig-core-handle.el
@@ -3,6 +3,8 @@
 (defconst fixtures (concat (file-name-directory load-file-name)
                            "fixtures/"))
 
+(set-variable 'vc-handled-backends nil)
+
 (ert-deftest test-editorconfig-core-handle ()
   ;; handle.ini
   (let* ((conf (concat fixtures

diff --git a/ert-tests/editorconfig-core.el b/ert-tests/editorconfig-core.el
@@ -1,5 +1,6 @@
 (require 'editorconfig-core)
 
+(set-variable 'vc-handled-backends nil)
 
 (ert-deftest test-editorconfig-core--get-handles ()
   (let* ((fixtures (concat default-directory

diff --git a/ert-tests/editorconfig-fnmatch.el b/ert-tests/editorconfig-fnmatch.el
@@ -1,5 +1,6 @@
 (require 'editorconfig-fnmatch)
 
+(set-variable 'vc-handled-backends nil)
 
 (ert-deftest test-editorconfig-fnmatch-p ()
   (let ((cases-t

diff --git a/ert-tests/editorconfig.el b/ert-tests/editorconfig.el
@@ -1,5 +1,7 @@
 (require 'editorconfig)
 
+(set-variable 'vc-handled-backends nil)
+
 (defun display-warning (type message &optional level buffer-name)
   "When testing overwrite this function to throw error when called."
   (unless (eq level :debug)

diff --git a/ert-tests/metadata.el b/ert-tests/metadata.el
@@ -1,5 +1,7 @@
 (require 'package)
 
+(set-variable 'vc-handled-backends nil)
+
 (defvar metadata-el-files nil)
 
 (ert-deftest test-metadata ()