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diff --git a/src/md2attr_line.hh b/src/md2attr_line.hh
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+/**
+ * Copyright (c) 2022, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef lnav_md2attr_line_hh
+#define lnav_md2attr_line_hh
+
+#include "base/attr_line.hh"
+#include "ghc/filesystem.hpp"
+#include "md4cpp.hh"
+
+class md2attr_line : public md4cpp::typed_event_handler<attr_line_t> {
+public:
+    md2attr_line() { this->ml_blocks.resize(1); }
+
+    md2attr_line& with_source_path(nonstd::optional<ghc::filesystem::path> path)
+    {
+        this->ml_source_path = path;
+        return *this;
+    }
+
+    Result<void, std::string> enter_block(const block& bl) override;
+
+    Result<void, std::string> leave_block(const block& bl) override;
+    Result<void, std::string> enter_span(const span& bl) override;
+    Result<void, std::string> leave_span(const span& sp) override;
+    Result<void, std::string> text(MD_TEXTTYPE tt,
+                                   const string_fragment& sf) override;
+
+    attr_line_t get_result() override { return this->ml_blocks.back(); }
+
+private:
+    struct table_t {
+        struct row_t {
+            std::vector<attr_line_t> r_columns;
+        };
+
+        std::vector<attr_line_t> t_headers;
+        std::vector<row_t> t_rows;
+    };
+
+    struct cell_lines {
+        cell_lines(std::vector<attr_line_t> lines) : cl_lines(std::move(lines))
+        {
+        }
+
+        std::vector<attr_line_t> cl_lines;
+    };
+
+    using list_block_t
+        = mapbox::util::variant<MD_BLOCK_UL_DETAIL*, MD_BLOCK_OL_DETAIL>;
+
+    void append_url_footnote(std::string href);
+    void flush_footnotes();
+
+    nonstd::optional<ghc::filesystem::path> ml_source_path;
+    std::vector<attr_line_t> ml_blocks;
+    std::vector<list_block_t> ml_list_stack;
+    std::vector<table_t> ml_tables;
+    std::vector<size_t> ml_span_starts;
+    std::vector<size_t> ml_html_span_starts;
+    std::vector<attr_line_t> ml_footnotes;
+    int32_t ml_code_depth{0};
+};
+
+#endif