Do not display line number when line is 0 (#31)

Some errors don't have a line number (line 0). In that case, omit the
`:0` suffix from the displayed path so the link reads as a file-only
reference instead of pointing to a nonsensical line 0.

Author: ruudk

src/TicketSwapErrorFormatter.php

@@ -173,7 +173,8 @@ public static function link(
                 ),
                 '{relativePath}' => $relativePath,
                 '{shortPath}' => self::trimPath($relativePath),
-                '{line}' => $line,
+                ':{line}' => $line === 0 ? '' : ':' . $line,
+                '{line}' => $line === 0 ? '' : (string) $line,
             ],
         );
     }

tests/TicketSwapErrorFormatterTest.php

@@ -164,6 +164,28 @@ public static function provideLinkFormats() : iterable
             null,
             true,
         ];
+        yield 'line 0 with editor url' => [
+            self::isWindows()
+                ? "↳ <href=phpstorm://open?file=c:\www\project\src\Core\Admin\Controller\Dashboard\User\AddUserController.php&line=0>src\Core\Admin\...\User\AddUserController.php</>\n"
+                : "↳ <href=phpstorm://open?file=/www/project/src/Core/Admin/Controller/Dashboard/User/AddUserController.php&line=0>src/Core/Admin/.../User/AddUserController.php</>\n",
+            TicketSwapErrorFormatter::LINK_FORMAT_DEFAULT,
+            0,
+            self::isWindows() ? 'c:\www\project\src\Core\Admin\Controller\Dashboard\User\AddUserController.php' : '/www/project/src/Core/Admin/Controller/Dashboard/User/AddUserController.php',
+            self::isWindows() ? 'src\Core\Admin\Controller\Dashboard\User\AddUserController.php' : 'src/Core/Admin/Controller/Dashboard/User/AddUserController.php',
+            self::PHPSTORM_EDITOR_URL,
+            true,
+        ];
+        yield 'line 0 without editor url' => [
+            self::isWindows()
+                ? "↳ src\\Core\\Admin\\Controller\\Dashboard\\User\\AddUserController.php\n"
+                : "↳ src/Core/Admin/Controller/Dashboard/User/AddUserController.php\n",
+            TicketSwapErrorFormatter::LINK_FORMAT_WITHOUT_EDITOR,
+            0,
+            self::isWindows() ? 'c:\\www\\project\\src\\Core\\Admin\\Controller\\Dashboard\\User\\AddUserController.php' : '/www/project/src/Core/Admin/Controller/Dashboard/User/AddUserController.php',
+            self::isWindows() ? 'src\\Core\\Admin\\Controller\\Dashboard\\User\\AddUserController.php' : 'src/Core/Admin/Controller/Dashboard/User/AddUserController.php',
+            null,
+            true,
+        ];
     }
 
     /**