Shorten Email column to 254 characters

Using unique indexes on VARCHAR fields with a character count of more
than 255 produces an error in MySQL with InnoDB tables and UTF-8
encoding.

Also, as per https://www.rfc-editor.org/errata_search.php?eid=1690

, the
maximum length for email addresses is limited to 254 characters.

Fixes FS#47038.

Signed-off-by: Stefan Auditor <stefan.auditor@erdfisch.de>
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

schema/aur-schema.sql

@@ -25,7 +25,7 @@ CREATE TABLE Users (
 	AccountTypeID TINYINT UNSIGNED NOT NULL DEFAULT 1,
 	Suspended TINYINT UNSIGNED NOT NULL DEFAULT 0,
 	Username VARCHAR(32) NOT NULL,
-	Email VARCHAR(256) NOT NULL,
+	Email VARCHAR(254) NOT NULL,
 	HideEmail TINYINT UNSIGNED NOT NULL DEFAULT 0,
 	Passwd CHAR(32) NOT NULL,
 	Salt CHAR(32) NOT NULL DEFAULT '',

upgrading/4.2.0.txt

@@ -13,5 +13,5 @@ CREATE UNIQUE INDEX ProviderNameProvides ON OfficialProviders (Name, Provides);
 2. Resize the email address field:
 
 ----
-ALTER TABLE Users MODIFY Email VARCHAR(256) NOT NULL;
+ALTER TABLE Users MODIFY Email VARCHAR(254) NOT NULL;
 ----