From b14e13536adebb761d2585700fd3202ff8a4870c Mon Sep 17 00:00:00 2001
From: danij <danij@dengine.net>
Date: Sat, 16 Jun 2012 06:48:49 +0100
Subject: [PATCH] DED Parser|Fixed: Don't log an unknown flag warning if flag
 name is whitespace

---
 doomsday/engine/portable/src/def_main.c | 18 +++++++++++++++---
 doomsday/engine/portable/src/def_read.c | 20 +++++++++++++++++---
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/doomsday/engine/portable/src/def_main.c b/doomsday/engine/portable/src/def_main.c
index b66ba2770f..90c3d55d08 100644
--- a/doomsday/engine/portable/src/def_main.c
+++ b/doomsday/engine/portable/src/def_main.c
@@ -590,11 +590,20 @@ ded_ptcgen_t* Def_GetDamageGenerator(int mobjType)
 
 int Def_GetFlagValue(const char* flag)
 {
-    int                 i;
+    int i;
+
+    if(!flag || !flag[0])
+    {
+        DEBUG_Message(("Attempted Def_GetFlagValue with %s flag argument.\n",
+                       flag? "zero-length" : "<null>"));
+        return 0;
+    }
 
     for(i = defs.count.flags.num - 1; i >= 0; i--)
+    {
         if(!stricmp(defs.flags[i].id, flag))
             return defs.flags[i].value;
+    }
 
     Con_Message("Warning: Def_GetFlagValue: Undefined flag '%s'.\n", flag);
     return 0;
@@ -1554,7 +1563,7 @@ static int Friendly(int num)
  */
 void Def_CopyLineType(linetype_t* l, ded_linetype_t* def)
 {
-    int                 i, k, a, temp;
+    int i, k, a, temp;
 
     l->id = def->id;
     l->flags = def->flags[0];
@@ -1629,8 +1638,11 @@ void Def_CopyLineType(linetype_t* l, ded_linetype_t* def)
                 temp = Def_EvalFlags(def->iparmStr[k]);
                 if(temp)
                     l->iparm[k] = temp;
-            } else
+            }
+            else
+            {
                 l->iparm[k] = Friendly(Def_GetMusicNum(def->iparmStr[k]));
+            }
         }
         else
         {
diff --git a/doomsday/engine/portable/src/def_read.c b/doomsday/engine/portable/src/def_read.c
index a0fe52536b..ead6442702 100644
--- a/doomsday/engine/portable/src/def_read.c
+++ b/doomsday/engine/portable/src/def_read.c
@@ -504,7 +504,7 @@ static int ReadFloat(float* dest)
 
 static int ReadFlags(int* dest, const char* prefix)
 {
-    char                flag[1024];
+    char flag[1024];
 
     // By default, no flags are set.
     *dest = 0;
@@ -517,7 +517,16 @@ static int ReadFlags(int* dest, const char* prefix)
         if(!ReadString(flag, sizeof(flag)))
             return false;
 
-        *dest = Def_EvalFlags(flag);
+        M_Strip(flag, sizeof(flag));
+
+        if(strlen(flag))
+        {
+            *dest = Def_EvalFlags(flag);
+        }
+        else
+        {
+            *dest = 0;
+        }
         return true;
     }
 
@@ -535,7 +544,12 @@ static int ReadFlags(int* dest, const char* prefix)
             strcpy(flag, token);
         }
 
-        *dest |= Def_EvalFlags(flag);
+        M_Strip(flag, sizeof(flag));
+
+        if(strlen(flag))
+        {
+            *dest |= Def_EvalFlags(flag);
+        }
 
         if(!ReadToken())
             break;