Fix line position record of front matter

Author: chrisjsewell

markdown_it/__init__.py

@@ -1,4 +1,4 @@
 from .main import MarkdownIt  # noqa: F401
 
 
-__version__ = "0.4.1"
+__version__ = "0.4.2"

markdown_it/extensions/front_matter/index.py

@@ -81,7 +81,7 @@ def frontMatter(state: StateBlock, startLine: int, endLine: int, silent: bool):
                 continue
 
             pos = start + 1
-            while pos <= maximum:
+            while pos < maximum:
                 if marker_str[(pos - start) % marker_len] != state.src[pos]:
                     break
                 pos += 1
@@ -115,12 +115,12 @@ def frontMatter(state: StateBlock, startLine: int, endLine: int, silent: bool):
             state.bMarks[startLine + 1] : state.eMarks[nextLine - 1]
         ]
         token.block = True
-        token.map = [startLine, pos]
         token.meta = state.src[start_content : start - 1]
 
         state.parentType = old_parent
         state.lineMax = old_line_max
         state.line = nextLine + (1 if auto_closed else 0)
+        token.map = [startLine, state.line - 1]
 
         return True
 

tests/test_front_matter/test_fixtures.py

@@ -3,6 +3,7 @@
 import pytest
 
 from markdown_it import MarkdownIt
+from markdown_it.token import Token
 from markdown_it.utils import read_fixture_file
 from markdown_it.extensions.front_matter import front_matter_plugin
 
@@ -16,3 +17,26 @@ def test_all(line, title, input, expected):
     text = md.render(input)
     print(text)
     assert text.rstrip() == expected.rstrip()
+
+
+def test_token():
+    md = MarkdownIt("commonmark").use(front_matter_plugin)
+    tokens = md.parse("---\na: 1\n---")
+    # print(tokens)
+    assert tokens == [
+        Token(
+            type="front_matter",
+            tag="",
+            nesting=0,
+            attrs=None,
+            map=[0, 2],
+            level=0,
+            children=None,
+            content="a: 1",
+            markup="---",
+            info="",
+            meta="a: 1",
+            block=True,
+            hidden=True,
+        )
+    ]