From 8913b84f60a7cb43d9f945fdd183dc70c9f94303 Mon Sep 17 00:00:00 2001
From: Chris Hennes <chennes@gmail.com>
Date: Sun, 18 Aug 2024 11:28:28 -0500
Subject: [PATCH] Gui: Correct repeated extension

Fixes #15908
---
 src/Gui/FileDialog.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Gui/FileDialog.cpp b/src/Gui/FileDialog.cpp
index 1b35178970..ced4054b81 100644
--- a/src/Gui/FileDialog.cpp
+++ b/src/Gui/FileDialog.cpp
@@ -196,7 +196,7 @@ QString FileDialog::getSaveFileName (QWidget * parent, const QString & caption,
         }
 
         QRegularExpression rx;
-        rx.setPattern(QLatin1String(R"(\s(\(\*\.\w{1,})\W)"));
+        rx.setPattern(QLatin1String(R"(\s\((\*\.\w{1,})\W)"));
         QStringList possibleSuffixes;
         getPossibleSuffixes(possibleSuffixes, rx, filterToSearch);
         auto match = rx.match(*filterToSearch);
@@ -207,7 +207,8 @@ QString FileDialog::getSaveFileName (QWidget * parent, const QString & caption,
             int offsetStart = 3;
             int offsetEnd = 4;
             QString suffix = filterToSearch->mid(index + offsetStart, length - offsetEnd);
-            if (fi.suffix().isEmpty() || !possibleSuffixes.contains(fi.suffix())) {
+            QString fiSuffix = QLatin1String("*.") + fi.suffix();  // To match with possibleSuffixes
+            if (fi.suffix().isEmpty() || !possibleSuffixes.contains(fiSuffix)) {
                 dirName += suffix;
             }
         }