🐛 FIX: List/table parsing ambiguity (#149)

A list should take precedence in case of ambiguity

Implements: markdown-it/markdown-it@cd5296f

markdown_it/port.yaml

@@ -1,7 +1,7 @@
 - package: markdown-it/markdown-it
   version: 12.0.4
-  commit: 7b8969ce5cb2edc54f2c1aa39a85a3a08076337d
-  date: Dec 20, 2020
+  commit: cd5296f1e7de2b978526178631859c18bb9d9928
+  date: Mar 27, 2021
   notes:
     - Rename variables that use python built-in names, e.g.
       - `max` -> `maximum`

markdown_it/rules_block/table.py

@@ -71,18 +71,29 @@ def table(state: StateBlock, startLine: int, endLine: int, silent: bool):
     pos = state.bMarks[nextLine] + state.tShift[nextLine]
     if pos >= state.eMarks[nextLine]:
         return False
+    first_ch = state.srcCharCode[pos]
+    pos += 1
+    if first_ch not in {0x7C, 0x2D, 0x3A}:  # not in {"|", "-", ":"}
+        return False
 
-    ch = state.srcCharCode[pos]
+    if pos >= state.eMarks[nextLine]:
+        return False
+    second_ch = state.srcCharCode[pos]
     pos += 1
-    # /* | */ /* - */ /* : */
-    if ch != 0x7C and ch != 0x2D and ch != 0x3A:
+    # not in {"|", "-", ":"} and not space
+    if second_ch not in {0x7C, 0x2D, 0x3A} and not isSpace(second_ch):
+        return False
+
+    # if first character is '-', then second character must not be a space
+    # (due to parsing ambiguity with list)
+    if first_ch == 0x2D and isSpace(second_ch):
         return False
 
     while pos < state.eMarks[nextLine]:
         ch = state.srcCharCode[pos]
 
         # /* | */  /* - */ /* : */
-        if ch != 0x7C and ch != 0x2D and ch != 0x3A and not isSpace(ch):
+        if ch not in {0x7C, 0x2D, 0x3A} and not isSpace(ch):
             return False
 
         pos += 1

markdown_it/token.py

@@ -52,7 +52,9 @@ class Token:
     content: str = attr.ib(default="")
     # '*' or '_' for emphasis, fence string for fence, etc.
     markup: str = attr.ib(default="")
-    # fence info string
+    # Additional information:
+    #   - Info string for "fence" tokens
+    #   - The value "auto" for autolink "link_open" and "link_close" tokens
     info: str = attr.ib(default="")
     # A place for plugins to store any arbitrary data
     meta: dict = attr.ib(factory=dict)

tests/test_port/fixtures/tables.md

@@ -881,3 +881,16 @@ GFM 4.10 Tables (extension), Example 205
 </thead>
 </table>
 .
+
+A list takes precedence in case of ambiguity
+.
+a | b
+- | -
+1 | 2
+.
+<p>a | b</p>
+<ul>
+<li>| -
+1 | 2</li>
+</ul>
+.