Fix literal URL and blank lines detection

lib/rules/no-consecutive-blank-lines.js

@@ -69,17 +69,19 @@ function noConsecutiveBlankLines(ast, file, preferred, done) {
 
     visit(ast, function (node) {
         var children = node.children;
+        var head = children && children[0];
+        var tail = children && children[children.length - 1];
 
         if (position.generated(node)) {
             return;
         }
 
-        if (children && children[0]) {
+        if (head && !position.generated(head)) {
             /*
              * Compare parent and first child.
              */
 
-            compare(position.start(node), position.start(children[0]), 0);
+            compare(position.start(node), position.start(head), 0);
 
             /*
              * Compare between each child.
@@ -118,7 +120,9 @@ function noConsecutiveBlankLines(ast, file, preferred, done) {
              * Compare parent and last child.
              */
 
-            compare(position.end(node), position.end(children[children.length - 1]), 1);
+            if (tail !== head && !position.generated(tail)) {
+                compare(position.end(node), position.end(tail), 1);
+            }
         }
     });
 

lib/rules/no-literal-urls.js

@@ -22,6 +22,7 @@
  */
 
 var visit = require('unist-util-visit');
+var toString = require('mdast-util-to-string');
 var position = require('mdast-util-position');
 
 /*
@@ -31,6 +32,12 @@ var position = require('mdast-util-position');
 var start = position.start;
 var end = position.end;
 
+/*
+ * Constants.
+ */
+
+var MAILTO = 'mailto:';
+
 /**
  * Warn for literal URLs without angle-brackets.
  *
@@ -45,12 +52,17 @@ function noLiteralURLs(ast, file, preferred, done) {
         var tail = end(node.children[node.children.length - 1]).column;
         var initial = start(node).column;
         var final = end(node).column;
+        var value = toString(node);
 
         if (position.generated(node)) {
             return;
         }
 
-        if (initial === head && final === tail) {
+        if (
+            initial === head &&
+            final === tail &&
+            (value === node.href || value == MAILTO + node.href)
+        ) {
             file.warn('Don’t use literal URLs without angle brackets', node);
         }
     });

test/fixtures/remark-github.md

@@ -0,0 +1,5 @@
+A user @wooorm.
+
+A commit 1234567.
+
+And an issue GH-1.

test/index.js

@@ -16,6 +16,7 @@ var assert = require('assert');
 var remark = require('remark');
 var File = require('vfile');
 var toc = require('remark-toc');
+var github = require('remark-github');
 var lint = require('..');
 var plural = require('plur');
 var clean = require('./clean');
@@ -302,6 +303,24 @@ describe('Gaps', function () {
     });
 });
 
+/*
+ * Validate only “real” links are warned about.
+ */
+
+describe('GitHub', function () {
+    it('should supports gaps in a document', function (done) {
+        var file = toFile('remark-github.md');
+        var processor = remark().use(github).use(lint);
+
+        file.quiet = true;
+
+        processor.process(file, function (err) {
+            assert(file.messages.length === 0);
+            done(err);
+        });
+    });
+});
+
 /*
  * Validate inline en- and disabling.
  */