Fixed typos in comment

lib/parser_block.js

@@ -80,7 +80,7 @@ ParserBlock.prototype.tokenize = function (state, startLine, endLine) {
       if (ok) { break; }
     }
 
-    // set state.tight iff we had an empty line before current tag
+    // set state.tight if we had an empty line before current tag
     // i.e. latest empty line should not count
     state.tight = !hasEmptyLines;
 

lib/rules_block/list.js

@@ -5,7 +5,7 @@
 var isSpace = require('../common/utils').isSpace;
 
 
-// Search `[-+*][\n ]`, returns next pos arter marker on success
+// Search `[-+*][\n ]`, returns next pos after marker on success
 // or -1 on fail.
 function skipBulletListMarker(state, startLine) {
   var marker, pos, max, ch;
@@ -33,7 +33,7 @@ function skipBulletListMarker(state, startLine) {
   return pos;
 }
 
-// Search `\d+[.)][\n ]`, returns next pos arter marker on success
+// Search `\d+[.)][\n ]`, returns next pos after marker on success
 // or -1 on fail.
 function skipOrderedListMarker(state, startLine) {
   var ch,
@@ -210,12 +210,10 @@ module.exports = function list(state, startLine, endLine, silent) {
     while (pos < max) {
       ch = state.src.charCodeAt(pos);
 
-      if (isSpace(ch)) {
       if (ch === 0x09) {
         offset += 4 - (offset + state.bsCount[nextLine]) % 4;
-        } else {
+      } else if (ch === 0x20) {
         offset++;
-        }
       } else {
         break;
       }
@@ -316,7 +314,7 @@ module.exports = function list(state, startLine, endLine, silent) {
     if (markerCharCode !== state.src.charCodeAt(posAfterMarker - 1)) { break; }
   }
 
-  // Finilize list
+  // Finalize list
   if (isOrdered) {
     token = state.push('ordered_list_close', 'ol', -1);
   } else {