V2 llvfs merge

indra/llvfs/lldiriterator.cpp

@@ -128,6 +128,14 @@ bool LLDirIterator::Impl::next(std::string &fname)
 	return found;
 }
 
+/**
+Converts the incoming glob into a regex. This involves
+converting incoming glob expressions to regex equivilents and
+at the same time, escaping any regex meaningful characters which
+do not have glob meaning, i.e.
+            .()+|^$ 
+in the input.
+*/
 std::string glob_to_regex(const std::string& glob)
 {
 	std::string regex;
@@ -142,9 +150,6 @@ std::string glob_to_regex(const std::string& glob)
 
 		switch (c)
 		{
-			case '.':
-				regex+="\\.";
-				break;
 			case '*':
 				if (glob.begin() == i)
 				{
@@ -177,8 +182,16 @@ std::string glob_to_regex(const std::string& glob)
 			case '!':
 				regex+= square_brace_open ? '^' : c;
 				break;
+			case '.': // This collection have different regex meaning
+			case '^': // and so need escaping.
+			case '(': 
+			case ')':
+			case '+':
+			case '|':
+			case '$':
+				regex += '\\'; 
 			default:
-				regex+=c;
+				regex += c;
 				break;
 		}