Remove tabs at the beginning of the line in paragraphs

lib/rules_inline/newline.js

@@ -2,6 +2,9 @@
 
 'use strict';
 
+var isSpace = require('../common/utils').isSpace;
+
+
 module.exports = function newline(state, silent) {
   var pmax, max, pos = state.pos;
 
@@ -32,7 +35,7 @@ module.exports = function newline(state, silent) {
   pos++;
 
   // skip heading spaces for next line
-  while (pos < max && state.src.charCodeAt(pos) === 0x20) { pos++; }
+  while (pos < max && isSpace(state.src.charCodeAt(pos))) { pos++; }
 
   state.pos = pos;
   return true;

test/fixtures/markdown-it/commonmark_extras.txt

@@ -159,6 +159,28 @@ Info string in fenced code block can't contain marker used for the fence
 <pre><code class="test`"></code></pre>
 .
 
+Tabs should be stripped from the beginning of the line
+.
+ foo
+ bar
+	baz
+.
+<p>foo
+bar
+baz</p>
+.
+
+Tabs should not cause hardbreak, EOL tabs aren't stripped in commonmark 0.27
+.
+foo1	
+foo2    
+bar
+.
+<p>foo1	
+foo2<br>
+bar</p>
+.
+
 Coverage. Directive can terminate paragraph.
 .
 a