Merge pull request hoedown#159 from uranusjr/table-fix

Fix rendering in table with empty cells

src/document.c

@@ -2225,7 +2225,15 @@ parse_table_row(
 		cell_start = i;
 
 		len = find_emph_char(data + i, size - i, '|');
-		i += len ? len : size - i;
+
+		/* Two possibilities for len == 0:
+		   1) No more pipe char found in the current line.
+		   2) The next pipe is right after the current one, i.e. empty cell.
+		   For case 1, we skip to the end of line; for case 2 we just continue.
+		*/
+		if (len == 0 && data[i] != '|')
+			len = size - i;
+		i += len;
 
 		cell_end = i - 1;
 

test/Tests/Table.html

@@ -0,0 +1,66 @@
+<h1>Standard table</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th>headline1</th>
+      <th>headline2</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>123</td>
+      <td></td>
+    </tr>
+  </tbody>
+</table>
+
+
+<h1>Cell alignment</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th style="text-align: left">headline1</th>
+      <th style="text-align: center">headline2</th>
+      <th style="text-align: right">headline3</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td style="text-align: left">123</td>
+      <td style="text-align: center"></td>
+      <td style="text-align: right"></td>
+    </tr>
+  </tbody>
+</table>
+
+
+<h1>Malformed table: missing cell at row in body</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th>headline1</th>
+      <th>headline2</th>
+      <th>headline3</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td>12</td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>34</td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>56</td>
+      <td></td>
+      <td></td>
+    </tr>
+  </tbody>
+</table>

test/Tests/Table.text

@@ -0,0 +1,21 @@
+# Standard table
+
+|headline1|headline2|
+|---------|---------|
+|123      |         |
+
+
+# Cell alignment
+
+|headline1|headline2|headline3|
+|:-------|:------:|------:|
+|123|||
+
+
+# Malformed table: missing cell at row in body
+
+|headline1|headline2|headline3|
+|-------|-------|-------|
+|12
+|34||
+|56|

test/config.json

@@ -106,6 +106,11 @@
             "input": "Tests/Underline.text",
             "output": "Tests/Underline.html",
             "flags": ["--underline"]
+        },
+        {
+            "input": "Tests/Table.text",
+            "output": "Tests/Table.html",
+            "flags": ["--tables"]
         }
     ]
 }