🐛 FIX: Table edge cases

- Fix tables inside lists indented with tabs  (implements: markdown-it/markdown-it@75fe6e0)
- Table with no columns is no longer a table (implements: markdown-it/markdown-it@b56eeb0)

Author: chrisjsewell

markdown_it/rules_block/table.py

@@ -10,7 +10,7 @@
 
 
 def getLine(state: StateBlock, line: int):
-    pos = state.bMarks[line] + state.blkIndent
+    pos = state.bMarks[line] + state.tShift[line]
     maximum = state.eMarks[line]
 
     # return state.src.substr(pos, max - pos)
@@ -125,7 +125,7 @@ def table(state: StateBlock, startLine: int, endLine: int, silent: bool):
     # header row will define an amount of columns in the entire table,
     # and align row should be exactly the same (the rest of the rows can differ)
     columnCount = len(columns)
-    if columnCount != len(aligns):
+    if columnCount == 0 or columnCount != len(aligns):
         return False
 
     if silent:

tests/test_port/fixtures/tables.md

@@ -658,6 +658,53 @@ Escape before escaped Pipes inside backticks don't split cells:
 </table>
 .
 
+Regression test for #721, table in a list indented with tabs:
+.
+- Level 1
+
+	- Level 2
+
+		| Column 1 | Column 2 |
+		| -------- | -------- |
+		| abcdefgh | ijklmnop |
+.
+<ul>
+<li>
+<p>Level 1</p>
+<ul>
+<li>
+<p>Level 2</p>
+<table>
+<thead>
+<tr>
+<th>Column 1</th>
+<th>Column 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>abcdefgh</td>
+<td>ijklmnop</td>
+</tr>
+</tbody>
+</table>
+</li>
+</ul>
+</li>
+</ul>
+.
+
+Table without any columns is not a table, #724
+.
+|
+|
+|
+.
+<p>|
+|
+|</p>
+.
+
 GFM 4.10 Tables (extension), Example 198
 .
 | foo | bar |