Yet another place to find DOOM2.WAD

src/d_iwad.c

@@ -225,6 +225,7 @@ static const char *steam_install_subdirs[] =
     "steamapps\\common\\Ultimate Doom\\base"
     "steamapps\\common\\DOOM 3 BFG Edition\\base\\wads",
     "steamapps\\common\\Final Doom\\base",
+    "steamapps\\common\\Master Levels of Doom\\doom2",
     "steamapps\\common\\DOOMEternal\\base\\classicwads"
 };
 

src/m_misc.c

@@ -707,6 +707,28 @@ char *sentencecase(const char *str)
     return newstr;
 }
 
+bool isuppercase(const char *str)
+{
+    const int   len = (int)strlen(str);
+
+    for (int i = 1; i < len; i++)
+        if (islower(str[i]))
+            return false;
+
+    return true;
+}
+
+bool islowercase(const char *str)
+{
+    const int   len = (int)strlen(str);
+
+    for (int i = 1; i < len; i++)
+        if (isupper(str[i]))
+            return false;
+
+    return true;
+}
+
 char *commify(int64_t value)
 {
     char    result[64];

src/m_misc.h

@@ -91,6 +91,8 @@ char *uppercase(const char *str);
 char *lowercase(char *str);
 char *titlecase(const char *str);
 char *sentencecase(const char *str);
+bool isuppercase(const char *str);
+bool islowercase(const char *str);
 char *commify(int64_t value);
 char *commifystat(uint64_t value);
 char *uncommify(const char *input);