6 files changed, 27 insertions, 18 deletions
diff --git a/vhosts/blog/nuldoc-src/pages/about.ts b/vhosts/blog/nuldoc-src/pages/about.ts
index 6ef2e05e..e78c109f 100644
--- a/vhosts/blog/nuldoc-src/pages/about.ts
+++ b/vhosts/blog/nuldoc-src/pages/about.ts
@@ -6,7 +6,7 @@ import { Config } from "../config.ts";
 import { el, text } from "../dom.ts";
 import { Page } from "../page.ts";
 import { dateToString } from "../revision.ts";
-import { getPostCreatedDate } from "./post.ts";
+import { getPostPublishedDate } from "./post.ts";
 import { SlidePage } from "./slide.ts";
 
 export type AboutPage = Page;
@@ -134,8 +134,8 @@ export async function generateAboutPage(
               "ul",
               [],
               ...Array.from(slides).sort((a, b) => {
-                const ta = dateToString(getPostCreatedDate(a));
-                const tb = dateToString(getPostCreatedDate(b));
+                const ta = dateToString(getPostPublishedDate(a));
+                const tb = dateToString(getPostPublishedDate(b));
                 if (ta > tb) return -1;
                 if (ta < tb) return 1;
                 return 0;
@@ -148,7 +148,7 @@ export async function generateAboutPage(
                     [["href", slide.href]],
                     text(
                       `${
-                        dateToString(getPostCreatedDate(slide))
+                        dateToString(getPostPublishedDate(slide))
                       }: ${slide.event} (${slide.talkType})`,
                     ),
                   ),
diff --git a/vhosts/blog/nuldoc-src/pages/post.ts b/vhosts/blog/nuldoc-src/pages/post.ts
index f7e53421..b5f954ea 100644
--- a/vhosts/blog/nuldoc-src/pages/post.ts
+++ b/vhosts/blog/nuldoc-src/pages/post.ts
@@ -18,7 +18,12 @@ export interface PostPage extends Page {
   uuid: string;
 }
 
-export function getPostCreatedDate(page: { revisions: Revision[] }): Date {
+export function getPostPublishedDate(page: { revisions: Revision[] }): Date {
+  for (const rev of page.revisions) {
+    if (!rev.isInternal) {
+      return rev.date;
+    }
+  }
   return page.revisions[0].date;
 }
 
@@ -26,6 +31,10 @@ export function getPostUpdatedDate(page: { revisions: Revision[] }): Date {
   return page.revisions[page.revisions.length - 1].date;
 }
 
+export function postHasAnyUpdates(page: { revisions: Revision[] }): boolean {
+  return 2 <= page.revisions.filter((rev) => !rev.isInternal).length;
+}
+
 export async function generatePostPage(
   doc: Document,
   config: Config,
@@ -114,7 +123,7 @@ export async function generatePostPage(
 
   const html = await pageLayout(
     {
-      metaCopyrightYear: getPostCreatedDate(doc).year,
+      metaCopyrightYear: getPostPublishedDate(doc).year,
       metaDescription: doc.description,
       metaKeywords: doc.tags.map((slug) => getTagLabel(config, slug)),
       metaTitle: `${doc.title}｜${config.blog.siteName}`,
@@ -139,7 +148,7 @@ export async function generatePostPage(
     description: doc.description,
     tags: doc.tags,
     revisions: doc.revisions,
-    published: getPostCreatedDate(doc),
+    published: getPostPublishedDate(doc),
     updated: getPostUpdatedDate(doc),
     uuid: doc.uuid,
   };
diff --git a/vhosts/blog/nuldoc-src/pages/post_list.ts b/vhosts/blog/nuldoc-src/pages/post_list.ts
index 7cee87e7..111ecd62 100644
--- a/vhosts/blog/nuldoc-src/pages/post_list.ts
+++ b/vhosts/blog/nuldoc-src/pages/post_list.ts
@@ -6,7 +6,7 @@ import { Config } from "../config.ts";
 import { el, text } from "../dom.ts";
 import { Page } from "../page.ts";
 import { dateToString } from "../revision.ts";
-import { getPostCreatedDate, PostPage } from "./post.ts";
+import { getPostPublishedDate, PostPage } from "./post.ts";
 
 export type PostListPage = Page;
 
@@ -33,8 +33,8 @@ export async function generatePostListPage(
         ),
       ),
       ...Array.from(posts).sort((a, b) => {
-        const ta = dateToString(getPostCreatedDate(a));
-        const tb = dateToString(getPostCreatedDate(b));
+        const ta = dateToString(getPostPublishedDate(a));
+        const tb = dateToString(getPostPublishedDate(b));
         if (ta > tb) return -1;
         if (ta < tb) return 1;
         return 0;
diff --git a/vhosts/blog/nuldoc-src/pages/slide.ts b/vhosts/blog/nuldoc-src/pages/slide.ts
index 5e4d1834..88069708 100644
--- a/vhosts/blog/nuldoc-src/pages/slide.ts
+++ b/vhosts/blog/nuldoc-src/pages/slide.ts
@@ -8,7 +8,7 @@ import { el, text } from "../dom.ts";
 import { Page } from "../page.ts";
 import { Date, dateToString, Revision } from "../revision.ts";
 import { Slide } from "../slide/slide.ts";
-import { getPostCreatedDate, getPostUpdatedDate } from "./post.ts";
+import { getPostPublishedDate, getPostUpdatedDate } from "./post.ts";
 
 export interface SlidePage extends Page {
   title: string;
@@ -113,7 +113,7 @@ export async function generateSlidePage(
 
   const html = await pageLayout(
     {
-      metaCopyrightYear: getPostCreatedDate(slide).year,
+      metaCopyrightYear: getPostPublishedDate(slide).year,
       metaDescription: slide.title,
       metaKeywords: slide.tags.map((slug) => getTagLabel(config, slug)),
       metaTitle: `${slide.event} (${slide.talkType})｜${config.blog.siteName}`,
@@ -141,7 +141,7 @@ export async function generateSlidePage(
     slideLink: slide.slideLink,
     tags: slide.tags,
     revisions: slide.revisions,
-    published: getPostCreatedDate(slide),
+    published: getPostPublishedDate(slide),
     updated: getPostUpdatedDate(slide),
     uuid: slide.uuid,
   };
diff --git a/vhosts/blog/nuldoc-src/pages/slide_list.ts b/vhosts/blog/nuldoc-src/pages/slide_list.ts
index 0b59b1dc..738f42ac 100644
--- a/vhosts/blog/nuldoc-src/pages/slide_list.ts
+++ b/vhosts/blog/nuldoc-src/pages/slide_list.ts
@@ -6,7 +6,7 @@ import { Config } from "../config.ts";
 import { el, text } from "../dom.ts";
 import { Page } from "../page.ts";
 import { dateToString } from "../revision.ts";
-import { getPostCreatedDate } from "./post.ts";
+import { getPostPublishedDate } from "./post.ts";
 import { SlidePage } from "./slide.ts";
 
 export type SlideListPage = Page;
@@ -34,8 +34,8 @@ export async function generateSlideListPage(
         ),
       ),
       ...Array.from(slides).sort((a, b) => {
-        const ta = dateToString(getPostCreatedDate(a));
-        const tb = dateToString(getPostCreatedDate(b));
+        const ta = dateToString(getPostPublishedDate(a));
+        const tb = dateToString(getPostPublishedDate(b));
         if (ta > tb) return -1;
         if (ta < tb) return 1;
         return 0;
diff --git a/vhosts/blog/nuldoc-src/pages/tag.ts b/vhosts/blog/nuldoc-src/pages/tag.ts
index ef79065d..ea1fe35e 100644
--- a/vhosts/blog/nuldoc-src/pages/tag.ts
+++ b/vhosts/blog/nuldoc-src/pages/tag.ts
@@ -6,7 +6,7 @@ import { slidePageEntry } from "../components/slide_page_entry.ts";
 import { Config, getTagLabel } from "../config.ts";
 import { el, text } from "../dom.ts";
 import { Page } from "../page.ts";
-import { getPostCreatedDate } from "./post.ts";
+import { getPostPublishedDate } from "./post.ts";
 import { TaggedPage } from "./tagged_page.ts";
 
 export interface TagPage extends Page {
@@ -41,7 +41,7 @@ export async function generateTagPage(
 
   const html = await pageLayout(
     {
-      metaCopyrightYear: getPostCreatedDate(pages[pages.length - 1]).year,
+      metaCopyrightYear: getPostPublishedDate(pages[pages.length - 1]).year,
       metaDescription: `タグ「${tagLabel}」のついた記事またはスライドの一覧`,
       metaKeywords: [tagLabel],
       metaTitle: `${pageTitle}｜${config.blog.siteName}`,