fix user-text empty lines

1 files changed, 32 insertions, 1 deletions

diff --git a/src/markdown.zig b/src/markdown.zig
index fad1676..58f1b97 100644
--- a/src/markdown.zig
+++ b/src/markdown.zig
@@ -286,6 +286,7 @@ pub const Renderer = struct {
             },
             c.MD_BLOCK_P => {
                 self.flushParagraph() catch |e| return self.fail(e);
+                if (self.list_item_depth == 0) self.appendBlank() catch |e| return self.fail(e);
             },
             c.MD_BLOCK_LI => {
                 self.flushParagraph() catch |e| return self.fail(e);
@@ -337,7 +338,7 @@ pub const Renderer = struct {
         const self: *Renderer = @ptrCast(@alignCast(userdata.?));
         const s = p[0..@intCast(size)];
         switch (t) {
-            c.MD_TEXT_BR, c.MD_TEXT_SOFTBR => self.add(" ") catch |e| return self.fail(e),
+            c.MD_TEXT_BR, c.MD_TEXT_SOFTBR => self.add("\n") catch |e| return self.fail(e),
             c.MD_TEXT_NULLCHAR => self.add("�") catch |e| return self.fail(e),
             c.MD_TEXT_ENTITY => self.add(decodeEntity(s)) catch |e| return self.fail(e),
             else => self.add(s) catch |e| return self.fail(e),
@@ -386,6 +387,36 @@ test "Renderer uses MD4C for common markdown" {
     try testing.expect(found_code);
 }
 
+test "Renderer preserves user-authored line breaks and blank paragraph lines" {
+    var out: std.ArrayList([]const u8) = .empty;
+    defer {
+        for (out.items) |l| testing.allocator.free(l);
+        out.deinit(testing.allocator);
+    }
+    var r: Renderer = .{ .alloc = testing.allocator, .width = 80, .out_lines = &out };
+    try r.render("first\nsecond\n\nthird");
+    try testing.expectEqual(@as(usize, 4), out.items.len);
+    try testing.expectEqualStrings("first", out.items[0]);
+    try testing.expectEqualStrings("second", out.items[1]);
+    try testing.expectEqualStrings("", out.items[2]);
+    try testing.expectEqualStrings("third", out.items[3]);
+}
+
+test "Renderer keeps soft breaks between inline-styled lines" {
+    var out: std.ArrayList([]const u8) = .empty;
+    defer {
+        for (out.items) |l| testing.allocator.free(l);
+        out.deinit(testing.allocator);
+    }
+    var r: Renderer = .{ .alloc = testing.allocator, .width = 80, .out_lines = &out };
+    try r.render("`code block`\n_underline_\n**bold**\n~strikethrough~");
+    try testing.expectEqual(@as(usize, 4), out.items.len);
+    try testing.expect(std.mem.indexOf(u8, out.items[0], "code block") != null);
+    try testing.expect(std.mem.indexOf(u8, out.items[1], "underline") != null);
+    try testing.expect(std.mem.indexOf(u8, out.items[2], "bold") != null);
+    try testing.expect(std.mem.indexOf(u8, out.items[3], "strikethrough") != null);
+}
+
 test "Renderer preserves nested list indentation" {
     var out: std.ArrayList([]const u8) = .empty;
     defer {