From 29809ef1b58ed94dda4c51c151e4f358d1e9622b Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Tue, 27 Dec 2022 17:01:07 +0100
Subject: [PATCH 1/2] tool/xep2md: Record all list metadata items

E.g. lastcall can exist more than once according to the schema, but only
one item was kept.

Before:

```yaml
lastcall: 2017-11-15
```

After:

```yaml
lastcall:
- 2021-03-30
- 2017-11-15
```
---
 tools/xep2md.lua | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/tools/xep2md.lua b/tools/xep2md.lua
index 019710e0..624b3bee 100644
--- a/tools/xep2md.lua
+++ b/tools/xep2md.lua
@@ -247,11 +247,21 @@ local header_schema = [[
 	supersededby , shortname , schemaloc* , registry? , discuss? ,
 	expires? , author+ , revision+ , councilnote?)
 ]];
-for field in header_schema:gmatch("%w+") do
-	events.add_handler(field.."#text", function (event)
-		meta[field] = event.text:match("%S.*%S");
-		return true;
-	end);
+for field, mod in header_schema:gmatch("(%w+)([*+?]?)") do
+	if mod == "" or mod == "?" then
+		events.add_handler(field .. "#text", function(event)
+			meta[field] = event.text:match("%S.*%S");
+			return true;
+		end);
+	elseif mod == "*" or mod == "+" then
+		events.add_handler(field .. "#text", function(event)
+			if not meta[field] then
+				meta[field] = {};
+			end
+			table.insert(meta[field], event.text:match("%S.*%S"));
+			return true;
+		end);
+	end
 end
 
 do

From 5a55805a67a51427e3717a90e515b5a2b52173ec Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Tue, 27 Dec 2022 17:27:08 +0100
Subject: [PATCH 2/2] tools/2xep: Fix encoding of simple list metadata

An extra wrapper element was added

```
<lastcall>
<lastcall>2017-11-15</lastcall>
</lastcall>
```

Correct is one element with text for each item

```
<lastcall>2017-11-15</lastcall>
```
---
 tools/2xep.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/2xep.lua b/tools/2xep.lua
index 3ca9ed37..34c46902 100644
--- a/tools/2xep.lua
+++ b/tools/2xep.lua
@@ -115,7 +115,7 @@ function Doc(body, metadata, variables)
 					end
 					add("</remark>");
 				else
-					add(("<%s>%s</%s>"):format(field, tostring(sv), field));
+					add(tostring(sv));
 				end
 				add(string.format("</%s>", field));
 			end