diff --git a/scintilla/lexers/LexBash.cxx b/scintilla/lexers/LexBash.cxx
index 8f27f892ee..732fdb6272 100644
--- a/scintilla/lexers/LexBash.cxx
+++ b/scintilla/lexers/LexBash.cxx
@@ -44,7 +44,7 @@ enum {
 #define HERE_DELIM_MAX			256
 
 // state constants for parts of a bash command segment
-enum class CmdState {
+enum class CmdState : uint8_t {
 	Body,
 	Start,
 	Word,
@@ -57,7 +57,7 @@ enum class CmdState {
 
 // state constants for nested delimiter pairs, used by
 // SCE_SH_STRING, SCE_SH_PARAM and SCE_SH_BACKTICKS processing
-enum class QuoteStyle {
+enum class QuoteStyle : uint8_t {
 	Literal,		// ''
 	CString,		// $''
 	String,			// ""
@@ -203,7 +203,7 @@ class QuoteCls {	// Class to manage quote pairs (simplified vs LexPerl)
 	int Up = '\0';
 	int Down = '\0';
 	QuoteStyle Style = QuoteStyle::Literal;
-	int Outer = SCE_SH_DEFAULT;
+	uint8_t Outer = SCE_SH_DEFAULT;
 	CmdState State = CmdState::Body;
 	void Clear() noexcept {
 		Count = 0;
@@ -218,7 +218,7 @@ class QuoteCls {	// Class to manage quote pairs (simplified vs LexPerl)
 		Up    = u;
 		Down  = opposite(Up);
 		Style = s;
-		Outer = outer;
+		Outer = static_cast<uint8_t>(outer);
 		State = state;
 	}
 };
@@ -651,7 +651,9 @@ void ColouriseBashDoc(Sci_PositionU startPos, Sci_Position length, int initStyle
 					continue;
 				}
 			} else if (sc.ch == QuoteStack.Current.Up) {
-				QuoteStack.Current.Count++;
+				if (QuoteStack.Current.Style != QuoteStyle::Parameter) {
+					QuoteStack.Current.Count++;
+				}
 			} else {
 				if (QuoteStack.Current.Style == QuoteStyle::String ||
 					QuoteStack.Current.Style == QuoteStyle::HereDoc ||