Fix bug in detailed error message for MD030/list-marker-space when no space present (fixes #57).

lib/rules.js

@@ -758,7 +758,7 @@ module.exports = [
         list.items.forEach(function forItem(item) {
           var match = /^[\s>]*\S+(\s+)/.exec(item.line);
           errors.addDetailIf(item.lineNumber,
-            expectedSpaces, !match || match[1].length);
+            expectedSpaces, (match ? match[1].length : 0));
         });
       });
     }

test/detailed-results-MD030-warning-message.md

@@ -0,0 +1,13 @@
+#
+
+-
+
+1.
+
+- a
+
+1. a
+
+-  a
+
+1.  a

test/detailed-results-MD030-warning-message.results.json

@@ -0,0 +1,38 @@
+[
+    {
+        "lineNumber": 3,
+        "ruleName": "MD030",
+        "ruleAlias": "list-marker-space",
+        "ruleDescription": "Spaces after list markers",
+        "errorDetail": "Expected: 1; Actual: 0",
+        "errorContext": null,
+        "errorRange": null
+    },
+    {
+        "lineNumber": 5,
+        "ruleName": "MD030",
+        "ruleAlias": "list-marker-space",
+        "ruleDescription": "Spaces after list markers",
+        "errorDetail": "Expected: 1; Actual: 0",
+        "errorContext": null,
+        "errorRange": null
+    },
+    {
+        "lineNumber": 11,
+        "ruleName": "MD030",
+        "ruleAlias": "list-marker-space",
+        "ruleDescription": "Spaces after list markers",
+        "errorDetail": "Expected: 1; Actual: 2",
+        "errorContext": null,
+        "errorRange": [1, 3]
+    },
+    {
+        "lineNumber": 13,
+        "ruleName": "MD030",
+        "ruleAlias": "list-marker-space",
+        "ruleDescription": "Spaces after list markers",
+        "errorDetail": "Expected: 1; Actual: 2",
+        "errorContext": null,
+        "errorRange": [1, 4]
+    }
+]