Followup to IIS installer tweaks in [9bb48c36]:

* skip 0-byte config files when initializing, go ahead and redirect to installer if no non-0-byte files
* tweak warning on installer.php to let you know if you have a 0-byte config.php that's not writable, as opposed to generally already having a config.php with data in it

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/installer.php b/lib/installer.php
index 2eff2d85a..c046eadea 100644
--- a/lib/installer.php
+++ b/lib/installer.php
@@ -85,7 +85,11 @@ abstract class Installer
         $config = INSTALLDIR.'/config.php';
         if (file_exists($config)) {
             if (!is_writable($config) || filesize($config) > 0) {
-                $this->warning('Config file "config.php" already exists.');
+                if (filesize($config) == 0) {
+                    $this->warning('Config file "config.php" already exists and is empty, but is not writable.');
+                } else {
+                    $this->warning('Config file "config.php" already exists.');
+                }
                 $pass = false;
             }
         }