From 79663d5933c15b59b3c74efeb323f3228eacd465 Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Sat, 5 Sep 2015 19:48:25 +0200
Subject: [PATCH] relatively simple fix to bug 1685: unit ids must start with
 alphanumerical characters. https://bugs.eressea.de/view.php?id=1685

---
 src/kernel/config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/kernel/config.c b/src/kernel/config.c
index b51cf40ee..fe4d96934 100644
--- a/src/kernel/config.c
+++ b/src/kernel/config.c
@@ -768,7 +768,7 @@ int read_unitid(const faction * f, const region * r)
      * paramliste. machen wir das nicht, dann wird getnewunit in s nach der
      * nummer suchen, doch dort steht bei temp-units nur "temp" drinnen! */
 
-    if (!s || *s == 0) {
+    if (!s || *s == 0 || !isalnum(*s)) {
         return -1;
     }
     if (isparam(s, f->locale, P_TEMP)) {