From 192275ee7c30f2bc80760dfac58e1e5a6875b426 Mon Sep 17 00:00:00 2001
From: MAEDA Go <maeda@farend.jp>
Date: Fri, 11 Sep 2026 18:08:49 +0900
Subject: [PATCH] Hide SVG icons in HTML email notifications to avoid a large
 blank space before pre blocks.

---
 app/views/layouts/mailer.html.erb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/views/layouts/mailer.html.erb b/app/views/layouts/mailer.html.erb
index 249e29af8..607bc6b29 100644
--- a/app/views/layouts/mailer.html.erb
+++ b/app/views/layouts/mailer.html.erb
@@ -13,6 +13,9 @@ h2, h3 { font-size: 1.1em; }
 a, a:link, a:visited { color: #1864ab; /* oc-blue-9 */ }
 a:hover, a:active { color: #c92a2a; /* oc-red-9 */ }
 a.wiki-anchor { display: none; }
+/* Hide SVG sprite icons: mail clients cannot render them, and those
+   that keep <svg> would lay them out as 300x150px blank boxes */
+svg { display: none; }
 fieldset.attachments {
   border-width: 1px 0 0 0;
   border-style: solid;
@@ -86,7 +89,6 @@ table, td, th {
   margin: 1em 0;
 }
 .markdown-alert-title { font-weight: bold;}
-.markdown-alert-title svg { display: none; }

 .markdown-alert-tip { border-color: #37b24d; /* oc-green-7 */}
 .markdown-alert-tip .markdown-alert-title { color: #2b8a3e; /* oc-green-9 */ }
--
2.55.0