feat: don't include page on index if no date frontmatter

2 files changed, 7 insertions, 5 deletions

diff --git a/README.md b/README.md
index f394d21..1dd1461 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ See [https://romansolotarev.com/ssg.html](https://romanzolotarev.com/ssg.html) f
 3. `chmod +x /usr/bin/ssg-blog`
 4. `ssg-blog src dst 'https://my-website.net'`
 
-ssg-blog checks for subdirectories in the src directory, each of which becomes a category heading (non-recursively). It will generate a sorted list of links to any .md file in those directory (including nested directories). Each .md file requires frontmatter including the title and a YYYY-MM-DD date like this to be included in the index page:
+ssg-blog checks for subdirectories in the src directory, each of which becomes a category heading (non-recursively). It will generate a sorted list of links to any .md file in those directory (including nested directories). Each .md file may include frontmatter with the title and a YYYY-MM-DD date like this to be included in the index page:
 
 ```markdown
 ---
@@ -23,7 +23,9 @@ publish: false
 ---
 ```
 
-If you add `publish: false` to the frontmatter, the post will not show up in the index (it will still be rendered and appear in the sitemap). This field is optional otherwise.
+If a file has no frontmatter, no `date`, or `publish: false`, the page won't be included in the index. It will still be rendered in sitemap.xml.
+
+Setting `publish: true` is optional and equivalent to not having `publish` at all.
 
 ## Example
 
diff --git a/ssg-blog b/ssg-blog
index 9ea93d0..478e317 100755
--- a/ssg-blog
+++ b/ssg-blog
@@ -217,11 +217,11 @@ render_index() {
     find "$category_dir" -type f \( -name "*.md" -o -name "index.md" \) ! -path "*/.*" |
     while read -r article; do
       publish=$(sed -n '/^publish: /s/^publish: //p' "$article" | head -n 1)
-      if [ "$publish" = "false" ]; then
-        continue
-      fi
       title=$(sed -n '/^title: /s/title: //p' "$article" | head -n 1)
       date=$(sed -n '/^date: /s/date: //p' "$article" | head -n 1)
+      if [ "$publish" = "false" ] || [ -z "$date" ]; then
+        continue
+      fi
       article_url="${article#"$src"}"
       article_url="${article_url%.md}.html"
       if [ "${article_url##*/}" = "index.html" ]; then