Change definition of Acedia's "name"

sources/Text/BaseText.uc

@@ -409,9 +409,8 @@ public final function MutableText UpperMutableCopy(
  *
  *  Valid names are case-insensitive `BaseText`s that:
  *      1. No longer than 50 characters long;
- *      2. Contain only ASCII characters, digits and '.' / '_' characters;
+ *      2. Contain only ASCII letters, digits and '.' / '_' characters;
- *      3. Has to start with a latin letter or '_';
+ *      3. Empty `BaseText` is not considered a valid name.
- *      4. Empty `BaseText` is not considered a valid name.
  *
  *  @return `true` if caller `BaseText` contains a valid config object name and
  *      `false` otherwise.
@@ -426,16 +425,7 @@ public final function bool IsValidName()
     if (IsEmpty())          return false;
     if (GetLength() > 50)   return false;
 
-    //  Test first character separately, since it cannot be digit
+    for (i = 0; i < GetLength(); i += 1)
-    nextCharacter = GetCharacter(0);
-    codePoint = nextCharacter.codePoint;
-    isValidCodePoint = ( codePoint == 0x5F              //  '_'
-        ||  (0x41 <= codePoint && codePoint <= 0x5A)    //  'A' to 'Z'
-        ||  (0x61 <= codePoint && codePoint <= 0x7A));  //  'a' to 'z'
-    if (!isValidCodePoint) {
-        return false;
-    }
-    for (i = 1; i < GetLength(); i += 1)
     {
         nextCharacter = GetCharacter(i);
         codePoint = nextCharacter.codePoint;