From 7268933a17220f296e282dc09efd61017a187dc6 Mon Sep 17 00:00:00 2001
From: klemek <klemek.dev@proton.me>
Date: Sat, 25 Apr 2026 17:04:31 +0200
Subject: [PATCH] feat: lucide icon and latex formulas

---
 .env.example                  |  3 ++-
 bun.lock                      |  8 ++++++++
 index.html                    |  2 +-
 package.json                  |  2 ++
 src/App.vue                   | 26 +++++++++++++++++++++++++-
 src/components/PageFooter.vue |  2 +-
 src/lib/articles.ts           | 21 ++++++++++++++++++++-
 src/lib/strings.ts            |  5 +++++
 src/style.scss                |  5 +++--
 src/views/ArticleView.vue     | 13 +++++--------
 src/views/HomeView.vue        |  7 ++++---
 src/views/NotFoundView.vue    |  5 ++---
 12 files changed, 78 insertions(+), 21 deletions(-)
 create mode 100644 src/lib/strings.ts

diff --git a/.env.example b/.env.example
index 9939800..32d632e 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,4 @@
-VITE_APP_TITLE=My Blog
+VITE_APP_TITLE=<i icon=rss></i> My Blog
+VITE_APP_TITLE_NO_HTML=My Blog
 VITE_APP_SIGNATURE=By <b>me</b>
 VITE_APP_LANG=en
\ No newline at end of file
diff --git a/bun.lock b/bun.lock
index a1486bb..b316700 100644
--- a/bun.lock
+++ b/bun.lock
@@ -6,6 +6,8 @@
       "name": "md-blog",
       "dependencies": {
         "highlight.js": "^11.11.1",
+        "katex": "^0.16.45",
+        "lucide": "^1.3.0",
         "vue": "^3.5.32",
         "vue-router": "^5.0.4",
       },
@@ -365,6 +367,8 @@
 
     "colorjs.io": ["colorjs.io@0.5.2", "", {}, "sha512-twmVoizEW7ylZSN32OgKdXRmo1qg+wT5/6C3xu5b9QsWzSFAhHLn2xd8ro0diCsKfCj1RdaTP/nrcW+vAoQPIw=="],
 
+    "commander": ["commander@8.3.0", "", {}, "sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww=="],
+
     "confbox": ["confbox@0.2.4", "", {}, "sha512-ysOGlgTFbN2/Y6Cg3Iye8YKulHw+R2fNXHrgSmXISQdMnomY6eNDprVdW9R5xBguEqI954+S6709UyiO7B+6OQ=="],
 
     "convert-source-map": ["convert-source-map@2.0.0", "", {}, "sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg=="],
@@ -511,6 +515,8 @@
 
     "jsonc-parser": ["jsonc-parser@3.3.1", "", {}, "sha512-HUgH65KyejrUFPvHFPbqOY0rsFip3Bo5wb4ngvdi1EpCYWUQDC5V+Y7mZws+DLkr4M//zQJoanu1SP+87Dv1oQ=="],
 
+    "katex": ["katex@0.16.45", "", { "dependencies": { "commander": "^8.3.0" }, "bin": { "katex": "cli.js" } }, "sha512-pQpZbdBu7wCTmQUh7ufPmLr0pFoObnGUoL/yhtwJDgmmQpbkg/0HSVti25Fu4rmd1oCR6NGWe9vqTWuWv3GcNA=="],
+
     "keyv": ["keyv@4.5.4", "", { "dependencies": { "json-buffer": "3.0.1" } }, "sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw=="],
 
     "kolorist": ["kolorist@1.8.0", "", {}, "sha512-Y+60/zizpJ3HRH8DCss+q95yr6145JXZo46OTpFvDZWLfRCE4qChOyk1b26nMaNpfHHgxagk9dXT5OP0Tfe+dQ=="],
@@ -549,6 +555,8 @@
 
     "lru-cache": ["lru-cache@5.1.1", "", { "dependencies": { "yallist": "^3.0.2" } }, "sha512-KpNARQA3Iwv+jTA0utUVVbrh+Jlrr1Fv0e56GGzAFOXN7dk/FviaDW8LHmK52DlcH4WP2n6gI8vN1aesBFgo9w=="],
 
+    "lucide": ["lucide@1.3.0", "", {}, "sha512-8/98ZCQjNDdfOjSycUujwqxKNrq97WPzdlNBR6tG7BqZgiOFQqzJuFapIpjPceW57sJv3zGIBg0L3SWR7c4fqA=="],
+
     "magic-string": ["magic-string@0.30.21", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.5" } }, "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ=="],
 
     "magic-string-ast": ["magic-string-ast@1.0.3", "", { "dependencies": { "magic-string": "^0.30.19" } }, "sha512-CvkkH1i81zl7mmb94DsRiFeG9V2fR2JeuK8yDgS8oiZSFa++wWLEgZ5ufEOyLHbvSbD1gTRKv9NdX69Rnvr9JA=="],
diff --git a/index.html b/index.html
index e81e8c0..a749e0d 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <link rel="icon" href="/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>%VITE_APP_TITLE%</title>
+    <title>%VITE_APP_TITLE_NO_HTML%</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no" />
     <link href="https://fonts.googleapis.com/css?family=Lato&display=swap" rel="stylesheet" />
     <link rel="stylesheet" type="text/css" href="/src/style.scss" />
diff --git a/package.json b/package.json
index a51df8e..725c34b 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,8 @@
   },
   "dependencies": {
     "highlight.js": "^11.11.1",
+    "katex": "^0.16.45",
+    "lucide": "^1.3.0",
     "vue": "^3.5.32",
     "vue-router": "^5.0.4"
   },
diff --git a/src/App.vue b/src/App.vue
index 7c2aa3f..d420c93 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,3 +1,27 @@
+<script setup lang="ts">
+import hljs from 'highlight.js'
+import { createIcons, icons } from 'lucide'
+import { onMounted, onUpdated, nextTick } from 'vue'
+
+async function update() {
+  setTimeout(async () => {
+    await nextTick()
+    hljs.highlightAll()
+    createIcons({
+      icons,
+      nameAttr: 'icon',
+      attrs: {
+        width: '1.1em',
+        height: '1.1em',
+      },
+    })
+  }, 100)
+}
+
+onMounted(update)
+onUpdated(update)
+</script>
+
 <template>
-  <RouterView />
+  <RouterView @vue:mounted="update" @vue:updated="update" />
 </template>
diff --git a/src/components/PageFooter.vue b/src/components/PageFooter.vue
index a19f3b1..ea920cd 100644
--- a/src/components/PageFooter.vue
+++ b/src/components/PageFooter.vue
@@ -4,7 +4,7 @@ import { REPOSITORY, NAME, VERSION } from '@/lib/meta'
 
 <template>
   <template v-if="$route.fullPath != '/'">
-    <RouterLink to="/">Back to home</RouterLink>
+    <RouterLink to="/"><i icon="undo-2"></i> Back to home</RouterLink>
   </template>
   <hr />
   <footer>
diff --git a/src/lib/articles.ts b/src/lib/articles.ts
index 1e7d6b7..6f2e72b 100644
--- a/src/lib/articles.ts
+++ b/src/lib/articles.ts
@@ -1,5 +1,6 @@
 import type { MarkdownData, Article, ArticleMetadata } from '@interfaces'
 import { dateFromParts } from './dates'
+import katex from 'katex'
 
 function parseMetadata(
   srcAttributes: Record<string, unknown>,
@@ -18,8 +19,26 @@ function parseMetadata(
   }
 }
 
+const LATEX_REGEX = /\$\$((?:(?!\$\$)[\s\S])*)\$\$/m
+const INLINE_LATEX_REGEX = /\$([^$\n]*)\$/
+
 function transformHtml(srcHtml: string, pathPrefix: string): string {
-  return srcHtml.replaceAll('./', pathPrefix + '/')
+  let html: string = srcHtml.replaceAll('="./', '="' + pathPrefix + '/')
+  let match: RegExpExecArray | null
+  do {
+    match = LATEX_REGEX.exec(html)
+    if (match && match[1]) {
+      console.log(match)
+      html = html.replace(match[0], katex.renderToString(match[1]))
+    }
+  } while (match && match[1])
+  do {
+    match = INLINE_LATEX_REGEX.exec(html)
+    if (match && match[1]) {
+      html = html.replace(match[0], katex.renderToString(match[1]))
+    }
+  } while (match && match[1])
+  return html
 }
 
 export async function loadArticle(date: Date): Promise<Article | null> {
diff --git a/src/lib/strings.ts b/src/lib/strings.ts
new file mode 100644
index 0000000..be54348
--- /dev/null
+++ b/src/lib/strings.ts
@@ -0,0 +1,5 @@
+export function stripHTML(html: string): string {
+  const div = document.createElement('div')
+  div.innerHTML = html
+  return div.textContent || div.innerText || ''
+}
diff --git a/src/style.scss b/src/style.scss
index 447aa03..bd33077 100644
--- a/src/style.scss
+++ b/src/style.scss
@@ -1,2 +1,3 @@
-@import 'highlight.js/scss/arduino-light.scss';
-@import '@articles/style.scss';
+@use 'highlight.js/scss/arduino-light.scss';
+@use '@articles/style.scss';
+@use 'katex/dist/katex.min.css';
diff --git a/src/views/ArticleView.vue b/src/views/ArticleView.vue
index f8efbaf..ec35b93 100644
--- a/src/views/ArticleView.vue
+++ b/src/views/ArticleView.vue
@@ -1,13 +1,13 @@
 <script setup lang="ts">
 import type { Article } from '@interfaces'
-import { ref, onBeforeMount, onUpdated } from 'vue'
+import { ref, onBeforeMount } from 'vue'
 import { loadArticle } from '@lib/articles'
 import { useRoute, onBeforeRouteUpdate, type RouteLocation } from 'vue-router'
 import NotFoundView from './NotFoundView.vue'
 import { dateFromParts, simpleDateFormat } from '@lib/dates'
 import { SIGNATURE, TITLE } from '@lib/meta'
 import PageFooter from '@components/PageFooter.vue'
-import hljs from 'highlight.js'
+import { stripHTML } from '@/lib/strings'
 
 const article = ref<Article | null>(null)
 const loading = ref<boolean>(true)
@@ -22,16 +22,13 @@ async function loadPage(target: RouteLocation) {
       target.params.day as string,
     ),
   )
-  window.document.title = TITLE + ' — ' + (article.value?.metadata.title ?? 'Not Found')
+  window.document.title =
+    stripHTML(TITLE) + ' — ' + stripHTML(article.value?.metadata.title ?? 'Not Found')
   loading.value = false
 }
 
 onBeforeMount(() => loadPage(route))
 onBeforeRouteUpdate(loadPage)
-
-onUpdated(() => {
-  hljs.highlightAll()
-})
 </script>
 
 <template>
@@ -45,7 +42,7 @@ onUpdated(() => {
     <main class="article">
       <div class="header">
         <RouterLink class="link-home" to="/">↑</RouterLink>
-        <h1>{{ article.metadata.title }}</h1>
+        <h1 v-html="article.metadata.title"></h1>
         <span class="time">
           <span>{{ article.metadata.draft ? 'Drafted on' : 'Published on' }}</span>
           {{ simpleDateFormat(article.metadata.date) }}
diff --git a/src/views/HomeView.vue b/src/views/HomeView.vue
index 1dbbd66..3e5c502 100644
--- a/src/views/HomeView.vue
+++ b/src/views/HomeView.vue
@@ -5,23 +5,24 @@ import type { ArticleMetadata } from '@interfaces'
 import { simpleDateFormat } from '@lib/dates'
 import { TITLE } from '@lib/meta'
 import PageFooter from '@components/PageFooter.vue'
+import { stripHTML } from '@/lib/strings'
 
 const articles = ref<ArticleMetadata[]>([])
 
 onBeforeMount(async () => {
   const newArticles = await listArticles()
   articles.value.splice(0, articles.value.length, ...newArticles)
-  window.document.title = TITLE + ' — Home'
+  window.document.title = stripHTML(TITLE) + ' — Home'
 })
 </script>
 
 <template>
   <main>
-    <h1 class="title">{{ TITLE }}</h1>
+    <h1 class="title" v-html="TITLE"></h1>
     <template v-for="(metadata, index) in articles" v-bind:key="index">
       <div v-if="!metadata.draft && metadata.path" class="article">
         <RouterLink :to="metadata.path">
-          <h3>{{ metadata.title }}</h3>
+          <h3 v-html="metadata.title"></h3>
           <span class="time"
             ><span>Published on</span>&nbsp;&nbsp;{{ simpleDateFormat(metadata.date) }}</span
           >
diff --git a/src/views/NotFoundView.vue b/src/views/NotFoundView.vue
index c0717dc..df4a2af 100644
--- a/src/views/NotFoundView.vue
+++ b/src/views/NotFoundView.vue
@@ -1,10 +1,11 @@
 <script setup lang="ts">
 import { TITLE } from '@/lib/meta'
+import { stripHTML } from '@/lib/strings'
 import PageFooter from '@components/PageFooter.vue'
 import { onBeforeMount } from 'vue'
 
 onBeforeMount(() => {
-  window.document.title = TITLE + ' — Not Found'
+  window.document.title = stripHTML(TITLE) + ' — Not Found'
 })
 </script>
 
@@ -14,5 +15,3 @@ onBeforeMount(() => {
     <PageFooter />
   </main>
 </template>
-
-<style scoped></style>