From 9caf9bb6263299456ae8969527d66f072e584a03 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Tue, 25 Oct 2022 19:38:03 +0300
Subject: feat! subplot metadata field for authors

Rename the field "author", which takes a single string value, to
"authors", which takes a list of strings. This way we're consistent
for single- and multi-author documents.

Sponsored-by: author
---
 examples/seq/seq.subplot             |  3 ++-
 src/ast.rs                           | 10 +++++++---
 subplot.md                           | 11 ++++++++---
 subplot.subplot                      |  3 ++-
 tests/subplots/common/files.subplot  |  3 ++-
 tests/subplots/common/runcmd.subplot |  3 ++-
 6 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/examples/seq/seq.subplot b/examples/seq/seq.subplot
index a6a6219..3bea683 100644
--- a/examples/seq/seq.subplot
+++ b/examples/seq/seq.subplot
@@ -1,5 +1,6 @@
 title: "**seq**(1) acceptance tests"
-author: The Subplot project
+authors:
+  - The Subplot project
 markdowns:
   - seq.md
 bindings:
diff --git a/src/ast.rs b/src/ast.rs
index ceded5c..15843eb 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -285,7 +285,7 @@ pub enum Error {
 pub struct YamlMetadata {
     title: String,
     subtitle: Option<String>,
-    author: Option<String>,
+    authors: Option<Vec<String>>,
     date: Option<String>,
     classes: Option<Vec<String>>,
     bibliography: Option<Vec<PathBuf>>,
@@ -320,8 +320,12 @@ impl YamlMetadata {
             map.insert("subtitle".into(), meta_string(v));
         }
 
-        if let Some(v) = &self.author {
-            map.insert("author".into(), meta_string(v));
+        if let Some(authors) = &self.authors {
+            let authors: Vec<MetaValue> = authors
+                .iter()
+                .map(|s| MetaValue::MetaString(s.into()))
+                .collect();
+            map.insert("author".into(), MetaValue::MetaList(authors));
         }
 
         if let Some(v) = &self.date {
diff --git a/subplot.md b/subplot.md
index 2d494b3..0901133 100644
--- a/subplot.md
+++ b/subplot.md
@@ -637,7 +637,8 @@ they are how Pandoc recongizes the block.
 ~~~{.yaml .numberLines}
 ---
 title: "Subplot"
-author: The Subplot project
+authors:
+- The Subplot project
 date: work in progress
 bindings:
 - subplot.yaml
@@ -2449,7 +2450,9 @@ and file metadate.html contains "WIP"
 
 ~~~{#metadate.subplot .file .yaml .numberLines}
 title: The Fabulous Title
-author: Alfred Pennyworth and Geoffrey Butler
+authors:
+- Alfred Pennyworth
+- Geoffrey Butler
 date: WIP
 markdowns:
 - metadate.md
@@ -2478,7 +2481,9 @@ and file dateoption.html contains "FANCYDATE"
 
 ~~~{#dateless.subplot .file .yaml .numberLines}
 title: The Fabulous Title
-author: Alfred Pennyworth and Geoffrey Butler
+authors:
+- Alfred Pennyworth
+- Geoffrey Butler
 markdowns:
 - dateless.md
 ~~~
diff --git a/subplot.subplot b/subplot.subplot
index 61ecd4f..e109430 100644
--- a/subplot.subplot
+++ b/subplot.subplot
@@ -1,5 +1,6 @@
 title: "Subplot"
-author: The Subplot project
+authors:
+  - The Subplot project
 markdowns:
   - subplot.md
 bindings:
diff --git a/tests/subplots/common/files.subplot b/tests/subplots/common/files.subplot
index edf7a26..75726f9 100644
--- a/tests/subplots/common/files.subplot
+++ b/tests/subplots/common/files.subplot
@@ -1,5 +1,6 @@
 title: Acceptance criteria for the files Subplot library
-author: The Subplot project
+authors:
+  - The Subplot project
 markdowns:
 - files.md
 bindings:
diff --git a/tests/subplots/common/runcmd.subplot b/tests/subplots/common/runcmd.subplot
index e30e5a8..dcfd590 100644
--- a/tests/subplots/common/runcmd.subplot
+++ b/tests/subplots/common/runcmd.subplot
@@ -1,5 +1,6 @@
 title: Acceptance criteria for the lib/runcmd Subplot library
-author: The Subplot project
+authors:
+  - The Subplot project
 markdowns:
 - runcmd.md
 bindings:
-- 
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