diff --git a/README.md b/README.md
index 72289a1..8c2c83d 100644
--- a/README.md
+++ b/README.md
@@ -218,7 +218,7 @@ function compare(a, b) {
 
 In other words, the imports/exports within groups are sorted alphabetically, case-insensitively and treating numbers like a human would, falling back to good old character code sorting in case of ties. See [Intl.Collator] for more information. Note: `Intl.Collator` sorts punctuation in _some_ defined order. I have no idea what order punctuation sorts in, and I don’t care. There’s no ordered “alphabet” for punctuation that I know of.
 
-There’s one addition to the alphabetical rule: Directory structure. Relative imports/exports of files higher up in the directory structure come before closer ones – `"../../utils"` comes before `"../utils"`, which comes before `"."`. (In short, `.` and `/` sort before any other (non-whitespace, non-control) character. `".."` and similar sort like `"../,"` (to avoid the “shorter prefix comes first” sorting concept).)
+There’s one addition to the alphabetical rule: Directory structure. Relative imports/exports of files higher up in the directory structure come before closer ones – `"../../utils"` comes before `"../utils"`, which comes before `"."`. Note: No path or URL normalization is performed – the plugin simply looks for how many times `../` is repeated at the start of the `from` string. If you put a `./` in there (like `.././../` or `./../../`) then the directory structure sorting won’t work. Simply don’t do that. Also, you _have_ to use forward slashes – backslashes are not supported.
 
 If both `import type` _and_ regular imports are used for the same source, the type imports come first. Same thing for `export type`. (You can move type imports to their own group, as mentioned in [custom grouping].)
 
@@ -241,9 +241,9 @@ import fs2 from "fs";
 import b from "https://example.com/script.js";
 
 // Absolute imports and other imports.
+import Error from "@/components/error.vue";
 import c from "/";
 import d from "/home/user/foo";
-import Error from "@/components/error.vue";
 
 // Relative imports.
 import e from "../..";
@@ -255,8 +255,8 @@ import i from "./styles";
 
 // Different types of exports:
 export { a } from "../..";
-export { b } from "/";
 export { Error } from "@/components/error.vue";
+export { b } from "/";
 export * from "an-npm-package";
 export { readFile } from "fs";
 export * as ns from "https://example.com/script.js";
@@ -655,7 +655,7 @@ Some other differences:
 
 The first question to ask yourself is if dprint is good enough. If so, you’ve got one tool less to worry about!
 
-If you’d like to enforce grouping, though, you could still use `eslint-plugin-simple-import-sort`. However, the two might disagree slightly on some sorting edge cases. So it’s better to turn off sorting in your dprint config file:
+If you’d like to enforce grouping, though, you could still use `eslint-plugin-simple-import-sort`. There is a risk that the two might disagree slightly on some sorting edge cases. So might want to turn off sorting in your dprint config file:
 
 ```json
 {
diff --git a/examples/readme-order.prettier.ts b/examples/readme-order.prettier.ts
index f5e9c73..8d76ddd 100644
--- a/examples/readme-order.prettier.ts
+++ b/examples/readme-order.prettier.ts
@@ -13,9 +13,9 @@ import fs2 from "fs";
 import b from "https://example.com/script.js";
 
 // Absolute imports and other imports.
+import Error from "@/components/error.vue";
 import c from "/";
 import d from "/home/user/foo";
-import Error from "@/components/error.vue";
 
 // Relative imports.
 import e from "../..";
@@ -27,8 +27,8 @@ import i from "./styles";
 
 // Different types of exports:
 export { a } from "../..";
-export { b } from "/";
 export { Error } from "@/components/error.vue";
+export { b } from "/";
 export * from "an-npm-package";
 export { readFile } from "fs";
 export * as ns from "https://example.com/script.js";
diff --git a/src/shared.js b/src/shared.js
index 60c92d9..b3cb1c3 100644
--- a/src/shared.js
+++ b/src/shared.js
@@ -798,32 +798,13 @@ function isNewline(node) {
 function getSource(node) {
   const source = node.source.value;
 
+  const match = /^(?:\.\.\/)*\.\.(?=\/|$)/.exec(source);
+  const level =
+    Number.MAX_SAFE_INTEGER - (match === null ? 0 : match[0].length);
+
   return {
     // Sort by directory level rather than by string length.
-    source: source
-      // Treat `.` as `./`, `..` as `../`, `../..` as `../../` etc.
-      .replace(/^[./]*\.$/, "$&/")
-      // Make `../` sort after `../../` but before `../a` etc.
-      // Why a comma? See the next comment.
-      .replace(/^[./]*\/$/, "$&,")
-      // Make `.` and `/` sort before any other punctation.
-      // The default order is: _ - , x x x . x x x / x x x
-      // We’re changing it to: . / , x x x _ x x x - x x x
-      .replace(/[./_-]/g, (char) => {
-        switch (char) {
-          case ".":
-            return "_";
-          case "/":
-            return "-";
-          case "_":
-            return ".";
-          case "-":
-            return "/";
-          // istanbul ignore next
-          default:
-            throw new Error(`Unknown source substitution character: ${char}`);
-        }
-      }),
+    source: `${level}:${source}`,
     originalSource: source,
     kind: getImportExportKind(node),
   };
diff --git a/test/__snapshots__/examples.test.js.snap b/test/__snapshots__/examples.test.js.snap
index c706ca1..a393531 100644
--- a/test/__snapshots__/examples.test.js.snap
+++ b/test/__snapshots__/examples.test.js.snap
@@ -104,8 +104,8 @@ import styles from "./styles.scss";
 exports[`examples groups.default-reverse.js 1`] = `
 import styles from "./styles";
 
-import config from "/config";
 import App from "@/App";
+import config from "/config";
 
 import { storiesOf } from "@storybook/react";
 import fs2 from "fs";
@@ -132,9 +132,9 @@ import styles from "./styles.css";
 
 exports[`examples groups.none.js 1`] = `
 import styles from "./styles";
-import config from "/config";
 import App from "@/App";
 import { storiesOf } from "@storybook/react";
+import config from "/config";
 import * as fs from "node:fs";
 import react from "react";
 
@@ -143,9 +143,9 @@ import react from "react";
 exports[`examples groups.type-imports-first.ts 1`] = `
 import type { Page } from "./page";
 import type { Css } from "./styles";
-import type { Config } from "/config";
 import type { AppRouter } from "@/App";
 import type { Story } from "@storybook/react";
+import type { Config } from "/config";
 import type { Dirent } from "node:fs";
 import type { ParsedPath } from "node:path";
 import type { Component } from "react";
@@ -159,8 +159,8 @@ import * as path from "node:path";
 import { storiesOf } from "@storybook/react";
 import react from "react";
 
-import config from "/config";
 import App from "@/App";
+import config from "/config";
 
 import page from "./page";
 import styles from "./styles";
@@ -181,10 +181,10 @@ import type { Store } from "redux";
 import { storiesOf } from "@storybook/react";
 import react from "react";
 
-import type { Config } from "/config";
 import type { AppRouter } from "@/App";
-import config from "/config";
+import type { Config } from "/config";
 import App from "@/App";
+import config from "/config";
 
 import type { Page } from "./page";
 import type { Css } from "./styles";
@@ -199,8 +199,8 @@ import type { ParsedPath } from "node:path";
 import type { Story } from "@storybook/react";
 import type { Component } from "react";
 import type { Store } from "redux";
-import type { Config } from "/config";
 import type { AppRouter } from "@/App";
+import type { Config } from "/config";
 import type { Page } from "./page";
 import type { Css } from "./styles";
 
@@ -212,8 +212,8 @@ import * as path from "node:path";
 import { storiesOf } from "@storybook/react";
 import react from "react";
 
-import config from "/config";
 import App from "@/App";
+import config from "/config";
 
 import page from "./page";
 import styles from "./styles";
@@ -229,17 +229,17 @@ import * as path from "node:path";
 import { storiesOf } from "@storybook/react";
 import react from "react";
 
-import config from "/config";
 import App from "@/App";
+import config from "/config";
 
 import page from "./page";
 import styles from "./styles";
 
 import type { Page } from "./page";
 import type { Css } from "./styles";
-import type { Config } from "/config";
 import type { AppRouter } from "@/App";
 import type { Story } from "@storybook/react";
+import type { Config } from "/config";
 import type { Dirent } from "node:fs";
 import type { ParsedPath } from "node:path";
 import type { Component } from "react";
@@ -261,10 +261,10 @@ import type { Story } from "@storybook/react";
 import type { Component } from "react";
 import type { Store } from "redux";
 
-import config from "/config";
 import App from "@/App";
-import type { Config } from "/config";
+import config from "/config";
 import type { AppRouter } from "@/App";
+import type { Config } from "/config";
 
 import page from "./page";
 import styles from "./styles";
@@ -282,8 +282,8 @@ import * as path from "node:path";
 import { storiesOf } from "@storybook/react";
 import react from "react";
 
-import config from "/config";
 import App from "@/App";
+import config from "/config";
 
 import page from "./page";
 import styles from "./styles";
@@ -293,8 +293,8 @@ import type { ParsedPath } from "node:path";
 import type { Story } from "@storybook/react";
 import type { Component } from "react";
 import type { Store } from "redux";
-import type { Config } from "/config";
 import type { AppRouter } from "@/App";
+import type { Config } from "/config";
 import type { Page } from "./page";
 import type { Css } from "./styles";
 
@@ -484,9 +484,9 @@ import fs2 from "fs";
 import b from "https://example.com/script.js";
 
 // Absolute imports and other imports.
+import Error from "@/components/error.vue";
 import c from "/";
 import d from "/home/user/foo";
-import Error from "@/components/error.vue";
 
 // Relative imports.
 import e from "../..";
@@ -498,8 +498,8 @@ import i from "./styles";
 
 // Different types of exports:
 export { a } from "../..";
-export { b } from "/";
 export { Error } from "@/components/error.vue";
+export { b } from "/";
 export * from "an-npm-package";
 export { readFile } from "fs";
 export * as ns from "https://example.com/script.js";
diff --git a/test/exports.test.js b/test/exports.test.js
index 7680c7d..6c1ebae 100644
--- a/test/exports.test.js
+++ b/test/exports.test.js
@@ -815,8 +815,8 @@ const flowTests = {
           |export type {Z} from "Z";
           |export type Y = 5;
           |export type {B} from "./B";
-          |export type {C} from "/B";
           |export type {E} from "@/B";
+          |export type {C} from "/B";
           |export type {X} from "X";
         `);
       },
@@ -1099,8 +1099,8 @@ const typescriptTests = {
           |export type Y = 5;
           |export {a, type type as type, z} from "../type";
           |export type {B} from "./B";
-          |export type {C} from "/B";
           |export type {E} from "@/B";
+          |export type {C} from "/B";
           |export type {X} from "X";
         `);
       },
diff --git a/test/imports.test.js b/test/imports.test.js
index 4ddd5fb..b81a4a3 100644
--- a/test/imports.test.js
+++ b/test/imports.test.js
@@ -874,55 +874,55 @@ const baseTests = (expect) => ({
           |import {} from "react";
           |
           |import {} from "";
+          |import {} from "@/components/Alert"
+          |import {} from "@/components/error.vue"
           |import {} from "/";
           |import {} from "/a";
           |import {} from "/a/b";
-          |import {} from "@/components/Alert"
-          |import {} from "@/components/error.vue"
           |import {} from "#/test"
           |import {} from "~/test"
           |
-          |import {} from "...";
-          |import {} from ".../";
           |import {} from "../../..";
           |import {} from "../../../";
-          |import {} from "../../../,";
           |import {} from "../../../_a";
+          |import {} from "../../../,";
           |import {} from "../../../[id]";
           |import {} from "../../../a";
           |import {} from "../../../utils";
           |import {} from "../..";
           |import {} from "../../";
-          |import {} from "../../,";
           |import {} from "../../_a";
-          |import {} from "../../[id]";
           |import {} from "../../-a";
+          |import {} from "../../,";
+          |import {} from "../../[id]";
           |import {} from "../../a";
           |import {} from "../../utils";
           |import {} from "..";
           |import {} from "../";
-          |import {} from "../,";
           |import {} from "../_a";
-          |import {} from "../[id]";
           |import {} from "../-a";
+          |import {} from "../,";
+          |import {} from "../[id]";
           |import {} from "../a";
           |import {} from "../a/..";
           |import {} from "../a/...";
           |import {} from "../a/../";
           |import {} from "../a/../b";
-          |import {} from ".//";
           |import {} from ".";
+          |import {} from "...";
+          |import {} from ".../";
           |import {} from "./";
-          |import {} from "./,";
           |import {} from "./_a";
-          |import {} from "./[id]";
           |import {} from "./-a";
+          |import {} from "./,";
+          |import {} from "./[id]";
+          |import {} from ".//";
           |import {} from "./A";
           |import {} from "./a";
           |import {} from "./ä"; // “a” followed by “̈̈” (COMBINING DIAERESIS).
           |import {} from "./ä";
-          |import {} from "./a/.";
           |import {} from "./a/-";
+          |import {} from "./a/.";
           |import {} from "./a/0";
           |import {} from "./B"; // B1
           |import {} from "./B"; // B2
@@ -1570,6 +1570,30 @@ const baseTests = (expect) => ({
       },
       errors: 1,
     },
+
+    // groups – all in one group.
+    {
+      options: [{ groups: [] }],
+      code: input`
+          |import styles from "./styles";
+          |import App from "@/App";
+          |import { storiesOf } from "@storybook/react";
+          |import config from "/config";
+          |import react from "react";
+          |import * as fs from "node:fs";
+      `,
+      output: (actual) => {
+        expect(actual).toMatchInlineSnapshot(`
+          |import styles from "./styles";
+          |import App from "@/App";
+          |import { storiesOf } from "@storybook/react";
+          |import config from "/config";
+          |import * as fs from "node:fs";
+          |import react from "react";
+        `);
+      },
+      errors: 1,
+    },
   ],
 });
 
@@ -1632,8 +1656,8 @@ const flowTests = {
           |import type {X} from "X";
           |import type {Z} from "Z";
           |
-          |import type C from "/B";
           |import type E from "@/B";
+          |import type C from "/B";
           |
           |import type B from "./B";
           |import typeof D from "./D";