From 4559e7541c2ec40f571d7b97eced962f7c6935cd Mon Sep 17 00:00:00 2001
From: Jakub Vrana <jakub@vrana.cz>
Date: Sun, 7 Feb 2021 16:40:29 +0100
Subject: [PATCH] Editor: Avoid trailing dot in export filename

Context: https://sourceforge.net/p/adminer/discussion/960418/thread/ca36ed7b66/
---
 adminer/include/functions.inc.php | 2 +-
 changes.txt                       | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 0dc2a8fa..2f681b1f 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -1115,7 +1115,7 @@ function dump_headers($identifier, $multi_table = false) {
 	$return = $adminer->dumpHeaders($identifier, $multi_table);
 	$output = $_POST["output"];
 	if ($output != "text") {
-		header("Content-Disposition: attachment; filename=" . $adminer->dumpFilename($identifier) . ".$return" . ($output != "file" && !preg_match('~[^0-9a-z]~', $output) ? ".$output" : ""));
+		header("Content-Disposition: attachment; filename=" . $adminer->dumpFilename($identifier) . ".$return" . ($output != "file" && preg_match('~^[0-9a-z]+$~', $output) ? ".$output" : ""));
 	}
 	session_write_close();
 	ob_flush();
diff --git a/changes.txt b/changes.txt
index 61658cf0..3892e879 100644
--- a/changes.txt
+++ b/changes.txt
@@ -21,6 +21,7 @@ MS SQL: Don't truncate comments to 30 chars (PR #376)
 Elasticsearch 6: Fix displaying type mapping (PR #402)
 MongoDB: Fix password-less check in the mongo extension (PR #405)
 Editor: Cast to string when searching (bug #325)
+Editor: Avoid trailing dot in export filename
 Re-enable PHP warnings (regression from 4.7.8)
 
 Adminer 4.7.8 (released 2020-12-06):