Add style one_or_ordered to MD029/ol-prefix (fixes #97).

doc/Rules.md

@@ -717,11 +717,11 @@ Tags: ol
 
 Aliases: ol-prefix
 
-Parameters: style ("one", "ordered"; default "one")
+Parameters: style ("one", "ordered", "one_or_ordered"; default "one_or_ordered")
 
 This rule is triggered on ordered lists that do not either start with '1.' or
 do not have a prefix that increases in numerical order (depending on the
-configured style, which defaults to 'one').
+configured style).
 
 Example valid list if the style is configured as 'one':
 
@@ -735,6 +735,13 @@ Example valid list if the style is configured as 'ordered':
     2. Do that.
     3. Done.
 
+Both examples are valid when the style is configured as 'one_or_ordered'.
+
+Example invalid list for all styles:
+
+    1. Do this.
+    3. Done.
+
 <a name="md030"></a>
 
 ## MD030 - Spaces after list markers

lib/rules.js

@@ -745,16 +745,23 @@ module.exports = [
     "aliases": [ "ol-prefix" ],
     "regexp": listItemMarkerRe,
     "func": function MD029(params, errors) {
-      var style = params.options.style || "one";
+      var style = params.options.style || "one_or_ordered";
+      var numberRe = /^[\s>]*([^.)]*)[.)]/;
       flattenLists(params).forEach(function forList(list) {
         if (!list.unordered) {
+          var listStyle = style;
+          if (listStyle === "one_or_ordered") {
+            var second = (list.items.length > 1) &&
+              numberRe.exec(list.items[1].line);
+            listStyle = (second && (second[1] !== "1")) ? "ordered" : "one";
+          }
           var number = 1;
           list.items.forEach(function forItem(item) {
-            var match = /^[\s>]*([^.)]*)[.)]/.exec(item.line);
+            var match = numberRe.exec(item.line);
             errors.addDetailIf(item.lineNumber,
               String(number), !match || match[1],
-              "Style: " + (style === "one" ? "1/1/1" : "1/2/3"));
+              "Style: " + (listStyle === "one" ? "1/1/1" : "1/2/3"));
-            if (style === "ordered") {
+            if (listStyle === "ordered") {
               number++;
             }
           });

schema/build-config-schema.js

@@ -163,9 +163,10 @@ rules.forEach(function forRule(rule) {
           "type": "string",
           "enum": [
             "one",
-            "ordered"
+            "ordered",
+            "one_or_ordered"
           ],
-          "default": "one"
+          "default": "one_or_ordered"
         }
       };
       break;

schema/markdownlint-config-schema.json

@@ -555,9 +555,10 @@
           "type": "string",
           "enum": [
             "one",
-            "ordered"
+            "ordered",
+            "one_or_ordered"
           ],
-          "default": "one"
+          "default": "one_or_ordered"
         }
       },
       "additionalProperties": false
@@ -575,9 +576,10 @@
           "type": "string",
           "enum": [
             "one",
-            "ordered"
+            "ordered",
+            "one_or_ordered"
           ],
-          "default": "one"
+          "default": "one_or_ordered"
         }
       },
       "additionalProperties": false

test/break-all-the-rules.md

@@ -44,7 +44,7 @@ Note: Can not break MD025 and MD002 in the same file
 > {MD028:43}
 
 1. list
-2. list {MD029}
+3. list {MD029}
 
 ```js
 ```

test/detailed-results-MD022-MD030.md

@@ -10,7 +10,7 @@ Text
 > Blank line above
 
 1. Alpha
-2.  Beta
+3.  Beta
 
 > >  Multiple spaces, multiple blockquotes
 > >

test/detailed-results-MD022-MD030.results.json

@@ -94,7 +94,7 @@
         "ruleName": "MD029",
         "ruleAlias": "ol-prefix",
         "ruleDescription": "Ordered list item prefix",
-        "errorDetail": "Expected: 1; Actual: 2; Style: 1/1/1",
+        "errorDetail": "Expected: 2; Actual: 3; Style: 1/2/3",
         "errorContext": null,
         "errorRange": [1, 4]
     },

test/ordered-list-item-prefix-one.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD029": {
+    "style": "one"
+  }
+}

test/ordered-list-item-prefix-one.md

@@ -0,0 +1,62 @@
+# Ordered list examples
+
+text
+
+1. Item
+
+text
+
+2. Item {MD029}
+
+text
+
+1. Item
+1. Item
+1. Item
+
+text
+
+1. Item
+2. Item {MD029}
+3. Item {MD029}
+
+text
+
+1. Item
+2. Item {MD029}
+1. Item
+4. Item {MD029}
+
+text
+
+1. Item
+1. Item
+3. Item {MD029}
+1. Item
+
+text
+
+1. Item
+2. Item {MD029}
+3. Item {MD029}
+
+text
+
+4. Item {MD029}
+5. Item {MD029}
+
+text
+
+- Item
+  1. Item
+  1. Item
+  1. Item
+- Item
+  1. Item
+  2. Item {MD029}
+  3. Item {MD029}
+- Item
+  1. Item
+  2. Item {MD029}
+  4. Item {MD029}
+- Item

test/ordered-list-item-prefix-one_or_ordered.md

@@ -0,0 +1,62 @@
+# Ordered list examples
+
+text
+
+1. Item
+
+text
+
+2. Item {MD029}
+
+text
+
+1. Item
+1. Item
+1. Item
+
+text
+
+1. Item
+2. Item
+3. Item
+
+text
+
+1. Item
+2. Item
+1. Item {MD029}
+4. Item
+
+text
+
+1. Item
+1. Item
+3. Item {MD029}
+1. Item
+
+text
+
+1. Item
+2. Item
+3. Item
+
+text
+
+4. Item {MD029}
+5. Item {MD029}
+
+text
+
+- Item
+  1. Item
+  1. Item
+  1. Item
+- Item
+  1. Item
+  2. Item
+  3. Item
+- Item
+  1. Item
+  2. Item
+  4. Item {MD029}
+- Item

test/ordered-list-item-prefix-ordered.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD029": {
+    "style": "ordered"
+  }
+}

test/ordered-list-item-prefix-ordered.md

@@ -0,0 +1,62 @@
+# Ordered list examples
+
+text
+
+1. Item
+
+text
+
+2. Item {MD029}
+
+text
+
+1. Item
+1. Item {MD029}
+1. Item {MD029}
+
+text
+
+1. Item
+2. Item
+3. Item
+
+text
+
+1. Item
+2. Item
+1. Item {MD029}
+4. Item
+
+text
+
+1. Item
+1. Item {MD029}
+3. Item
+1. Item {MD029}
+
+text
+
+1. Item
+2. Item
+3. Item
+
+text
+
+4. Item {MD029}
+5. Item {MD029}
+
+text
+
+- Item
+  1. Item
+  1. Item {MD029}
+  1. Item {MD029}
+- Item
+  1. Item
+  2. Item
+  3. Item
+- Item
+  1. Item
+  2. Item
+  4. Item {MD029}
+- Item

test/ordered_list_item_prefix-paren.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD029": {
+    "style": "one"
+  }
+}

test/ordered_list_item_prefix.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD029": {
+    "style": "one"
+  }
+}