From 06c1f175701eccc2fe2d3af242926f85a1fe958a Mon Sep 17 00:00:00 2001
From: Levi Neely <141506390+lneely@users.noreply.github.com>
Date: Sun, 12 Jul 2026 20:36:15 +0200
Subject: [PATCH] Use full compound extension (.md.gpg, .org.age, etc.)

fileitemaction uses completeSuffix() to preserve the full extension.
fileTypeFromExtension() recurses on compound extensions to detect
frontmatter support from the inner extension.
---
 fileitemaction/denote_fileitemaction.cpp | 2 +-
 lib/denote_frontmatter.cpp               | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/fileitemaction/denote_fileitemaction.cpp b/fileitemaction/denote_fileitemaction.cpp
index a2a8732..b5f9561 100644
--- a/fileitemaction/denote_fileitemaction.cpp
+++ b/fileitemaction/denote_fileitemaction.cpp
@@ -68,7 +68,7 @@ void DenoteFileItemAction::renameWithDenote(const KFileItemList &items, QWidget
     defaultTitle.replace(QLatin1Char('_'), QLatin1Char(' '));
 
     // Try to extract title from frontmatter if applicable
-    const QString ext = QStringLiteral(".") + fi.suffix();
+    const QString ext = QStringLiteral(".") + fi.completeSuffix();
     Denote::FileType fileType = Denote::fileTypeFromExtension(ext);
     if (fileType != Denote::FileType::Unknown) {
         QFile file(path);
diff --git a/lib/denote_frontmatter.cpp b/lib/denote_frontmatter.cpp
index db60c73..a3eac83 100644
--- a/lib/denote_frontmatter.cpp
+++ b/lib/denote_frontmatter.cpp
@@ -8,12 +8,21 @@ namespace Denote {
 FileType fileTypeFromExtension(const QString &ext)
 {
     const QString lower = ext.toLower();
+    // Check the full extension first, then the inner extension for compound types
+    // e.g. ".md.gpg" -> check ".md.gpg", then ".md"
     if (lower == QStringLiteral(".md") || lower == QStringLiteral(".markdown"))
         return FileType::MdYaml;
     if (lower == QStringLiteral(".org"))
         return FileType::Org;
     if (lower == QStringLiteral(".txt"))
         return FileType::Txt;
+
+    // For compound extensions, check if the inner part is supported
+    int dot = lower.indexOf(QLatin1Char('.'), 1);
+    if (dot > 0) {
+        return fileTypeFromExtension(lower.left(dot));
+    }
+
     return FileType::Unknown;
 }