fix(#2): enforce newline in alert

mdformat_gfm_alerts/factories/_gfm_blockquote_factories.py

@@ -73,7 +73,7 @@ def parse_possible_blockquote_admon(
         # Exit if no match for any pattern
         text = state.src[start:]
         regexes = [
-            re.compile(rf"{pat}(?P<inline_content>(?: |<br>)[^\n]+)?", re.IGNORECASE)
+            re.compile(rf"{pat}(?: |<br>)?(?P<inline_content>[^\n]+)?", re.IGNORECASE)
             for pat in patterns
         ]
         match = next((_m for rx in regexes if (_m := rx.match(text))), None)

mdformat_gfm_alerts/mdit_plugins/__init__.py

@@ -1,6 +1 @@
-from ._gfm_alerts import (
-    GFM_ALERTS_PREFIX,
-    INLINE_SEP,
-    format_gfm_alerts_markup,
-    gfm_alerts_plugin,
-)
+from ._gfm_alerts import GFM_ALERTS_PREFIX, format_gfm_alerts_markup, gfm_alerts_plugin

mdformat_gfm_alerts/mdit_plugins/_gfm_alerts.py

@@ -32,9 +32,13 @@ def format_gfm_alerts_markup(
     admonition: AlertData,
 ) -> None:
     """Format markup."""
-    title_line = (
-        f"[!{admonition.meta_text.upper()}]{INLINE_SEP}{admonition.inline_content}"
-    )
+    # To fix #2, when the admonition and text are on the same line, push the content
+    #  to the next line. While this is equivalent in the markdown spec, this is
+    #  required for Github
+    newline = "\n"
+
+    meta = f"[!{admonition.meta_text.upper()}]"
+    title_line = f"{meta}{newline}{admonition.inline_content}".rstrip()
 
     with new_token(state, GFM_ALERTS_PREFIX, "div") as token:
         token.attrs = {

mdformat_gfm_alerts/plugin.py

@@ -8,7 +8,7 @@
 from mdformat.renderer import RenderContext, RenderTreeNode
 from mdformat.renderer.typing import Render
 
-from .mdit_plugins import GFM_ALERTS_PREFIX, INLINE_SEP, gfm_alerts_plugin
+from .mdit_plugins import GFM_ALERTS_PREFIX, gfm_alerts_plugin
 
 
 def update_mdit(mdit: MarkdownIt) -> None:
@@ -18,7 +18,7 @@ def update_mdit(mdit: MarkdownIt) -> None:
 
 def _render_gfm_alerts(node: RenderTreeNode, context: RenderContext) -> str:
     """Render a `RenderTreeNode`."""
-    title_line = node.markup.replace(INLINE_SEP, "")
+    title_line = node.markup
     elements = [render for child in node.children if (render := child.render(context))]
     # Do not separate the title line from the first row
     return "\n".join([title_line, "\n\n".join(elements)]).rstrip()

tests/format/fixtures.md

@@ -69,7 +69,8 @@ Fixes formatting issues introduced without this extension
 - List A
   - List Nested
 
-> [!NOTE] Useful information that users should know, even when skimming content.
+> [!NOTE]
+> Useful information that users should know, even when skimming content.
 
 > [!CAUTION]
 > Advises about risks or negative outcomes of certain actions.