Add various Markdown lists as formatted by Prettier with the default --tab-width of 2 and the not uncommon alternate of 4, update Prettier.md with the relevant configuration (produced using v2.8.1 of https://prettier.io/playground/) (refs #652).

doc/Prettier.md

@@ -12,17 +12,16 @@ Other scenarios are documented below.
 
 The default settings of `markdownlint` and `Prettier` are compatible and don't
 result in any linting violations. If `Prettier` is used with `--tab-width` set
-to `4`, the following `markdownlint` configuration can be used:
+to `4` (vs. `2`), the following `markdownlint` configuration can be used:
 
 ```json
 {
-  "MD007": {
+  "list-marker-space": {
-    "indent": 4
-  },
-  "MD030": {
-    "ul_single": 3,
     "ul_multi": 3,
-    "ol_multi": 2
+    "ul_single": 3
+  },
+  "ul-indent": {
+    "indent": 4
   }
 }
 ```

test/prettier-tab-width-2-default.md

@@ -0,0 +1,33 @@
+# Prettier `--tab-width=2` (Default)
+
+Text
+
+- Item
+  - Item
+    - Item
+
+Text
+
+- Item
+- Item
+  - Item
+  - Item
+    - Item
+    - Item
+
+Text
+
+1. Item
+   1. Item
+      1. Item
+
+Text
+
+1. Item
+2. Item
+   1. Item
+   2. Item
+      1. Item
+      2. Item
+
+Text

test/prettier-tab-width-4.md

@@ -0,0 +1,45 @@
+# Prettier `--tab-width==4`
+
+Text
+
+-   Item
+    -   Item
+        -   Item
+
+Text
+
+-   Item
+-   Item
+    -   Item
+    -   Item
+        -   Item
+        -   Item
+
+Text
+
+1. Item
+    1. Item
+        1. Item
+
+Text
+
+1. Item
+2. Item
+    1. Item
+    2. Item
+        1. Item
+        2. Item
+
+Text
+
+<!-- markdownlint-configure-file
+{
+  "list-marker-space": {
+    "ul_multi": 3,
+    "ul_single": 3
+  },
+  "ul-indent": {
+    "indent": 4
+  }
+}
+-->

test/snapshots/markdownlint-test-scenarios.js.md

@@ -32816,6 +32816,102 @@ Generated by [AVA](https://avajs.dev).
       `,
     }
 
+## prettier-tab-width-2-default.md
+
+> Snapshot 1
+
+    {
+      errors: [],
+      fixed: `# Prettier \`--tab-width=2\` (Default)␊
+      ␊
+      Text␊
+      ␊
+      - Item␊
+        - Item␊
+          - Item␊
+      ␊
+      Text␊
+      ␊
+      - Item␊
+      - Item␊
+        - Item␊
+        - Item␊
+          - Item␊
+          - Item␊
+      ␊
+      Text␊
+      ␊
+      1. Item␊
+         1. Item␊
+            1. Item␊
+      ␊
+      Text␊
+      ␊
+      1. Item␊
+      2. Item␊
+         1. Item␊
+         2. Item␊
+            1. Item␊
+            2. Item␊
+      ␊
+      Text␊
+      `,
+    }
+
+## prettier-tab-width-4.md
+
+> Snapshot 1
+
+    {
+      errors: [],
+      fixed: `# Prettier \`--tab-width==4\`␊
+      ␊
+      Text␊
+      ␊
+      -   Item␊
+          -   Item␊
+              -   Item␊
+      ␊
+      Text␊
+      ␊
+      -   Item␊
+      -   Item␊
+          -   Item␊
+          -   Item␊
+              -   Item␊
+              -   Item␊
+      ␊
+      Text␊
+      ␊
+      1. Item␊
+          1. Item␊
+              1. Item␊
+      ␊
+      Text␊
+      ␊
+      1. Item␊
+      2. Item␊
+          1. Item␊
+          2. Item␊
+              1. Item␊
+              2. Item␊
+      ␊
+      Text␊
+      ␊
+      <!-- markdownlint-configure-file␊
+      {␊
+        "list-marker-space": {␊
+          "ul_multi": 3,␊
+          "ul_single": 3␊
+        },␊
+        "ul-indent": {␊
+          "indent": 4␊
+        }␊
+      }␊
+      -->␊
+      `,
+    }
+
 ## proper-names-alternate.md
 
 > Snapshot 1