feat: Decouple greentext handling from blockquote parsing

Author: Martin005

src/parser/mod.rs

@@ -432,8 +432,11 @@ where
     fn parse_block_quote_prefix(&mut self, line: &str) -> bool {
         let bytes = line.as_bytes();
         let indent = self.indent;
-        if indent <= 3 && bytes.get(self.first_nonspace) == Some(&b'>') && !self.is_greentext(line)
-        {
+
+        // When already inside a blockquote, always treat `>` as a blockquote marker,
+        // even if it's a lone `>` (which represents a blank line in the blockquote).
+        // This allows multi-paragraph blockquotes without requiring a space after `>`.
+        if indent <= 3 && bytes.get(self.first_nonspace) == Some(&b'>') {
             self.advance_offset(line, indent + 1, true);
 
             if byte_matches(bytes, self.offset, strings::is_space_or_tab) {

src/tests/greentext.rs

@@ -19,7 +19,7 @@ fn separate_quotes_on_line_end() {
     html_opts!(
         [extension.greentext],
         "> 1\n>\n> 2",
-        "<blockquote>\n<p>1</p>\n</blockquote>\n<p>&gt;</p>\n<blockquote>\n<p>2</p>\n</blockquote>\n"
+        "<blockquote>\n<p>1</p>\n<p>2</p>\n</blockquote>\n"
     );
 }
 
@@ -40,3 +40,73 @@ fn unnest_quotes_on_line_end_commonmark() {
         "<blockquote>\n<p>1</p>\n<blockquote>\n<p>2</p>\n</blockquote>\n<p>1</p>\n</blockquote>\n"
     );
 }
+
+#[test]
+fn greentext_disabled_blockquote() {
+    assert_ast_match!(
+        [],
+        "> First line.\n> The second sentence in the first line.\n>\n> Second line.",
+        (document (1:1-4:14) [
+            (block_quote (1:1-4:14) [
+                (paragraph (1:3-2:40) [
+                    (text (1:3-1:13) "First line.")
+                    (softbreak (1:14-1:14))
+                    (text (2:3-2:40) "The second sentence in the first line.")
+                ])
+                (paragraph (4:3-4:14) [
+                    (text (4:3-4:14) "Second line.")
+                ])
+            ])
+        ])
+    );
+}
+
+#[test]
+fn greentext_enabled_blockquote() {
+    assert_ast_match!(
+        [extension.greentext],
+        "> First line.\n> The second sentence in the first line.\n>\n> Second line.",
+        (document (1:1-4:14) [
+            (block_quote (1:1-4:14) [
+                (paragraph (1:3-2:40) [
+                    (text (1:3-1:13) "First line.")
+                    (softbreak (1:14-1:14))
+                    (text (2:3-2:40) "The second sentence in the first line.")
+                ])
+                (paragraph (4:3-4:14) [
+                    (text (4:3-4:14) "Second line.")
+                ])
+            ])
+        ])
+    );
+}
+
+#[test]
+fn greentext_disabled_blockquote_alerts() {
+    html_opts!(
+        [extension.alerts],
+        "> [!Note]\n> This is the first line.\n>\n> Second line.",
+        concat!(
+            "<div class=\"markdown-alert markdown-alert-note\">\n",
+            "<p class=\"markdown-alert-title\">Note</p>\n",
+            "<p>This is the first line.</p>\n",
+            "<p>Second line.</p>\n",
+            "</div>\n",
+        ),
+    );
+}
+
+#[test]
+fn greentext_enabled_blockquote_alerts() {
+    html_opts!(
+        [extension.greentext, extension.alerts],
+        "> [!Note]\n> This is the first line.\n>\n> Second line.",
+        concat!(
+            "<div class=\"markdown-alert markdown-alert-note\">\n",
+            "<p class=\"markdown-alert-title\">Note</p>\n",
+            "<p>This is the first line.</p>\n",
+            "<p>Second line.</p>\n",
+            "</div>\n",
+        ),
+    );
+}