Use monospace font in code editor and fix smart quote i.e. automatic replacement of ASCII single/double quote with Unicode quote characters which leads to issue when compiling string literal

Author: light-tech

.gitignore

@@ -19,5 +19,5 @@ xcuserdata/
 llvm-project/
 libffi/
 tools/
-LLVM.xcframework/
+LLVM**.xcframework/
 

Sample.xcodeproj/project.pbxproj

@@ -317,7 +317,8 @@
 				ENABLE_PREVIEWS = YES;
 				HEADER_SEARCH_PATHS = "";
 				INFOPLIST_FILE = Sample/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 14.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.5;
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -347,7 +348,8 @@
 				ENABLE_PREVIEWS = YES;
 				HEADER_SEARCH_PATHS = "";
 				INFOPLIST_FILE = Sample/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 14.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.5;
+				"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

Sample/ContentView.swift

@@ -40,6 +40,8 @@ int main() {
                 VStack {
                     Button("Interpret Sample Program", action: interpretSampleProgram)
                     TextEditor(text: $program)
+                        .disableAutocorrection(true)
+                        .font(.body.monospaced())
                 }.tabItem {
                     Image(systemName: "doc.plaintext")
                     Text("Source code")
@@ -60,6 +62,8 @@ int main() {
                     .padding()
                 HStack {
                     TextEditor(text: $program)
+                        .disableAutocorrection(true)
+                        .font(.body.monospaced())
                     Divider()
                     VStack {
                         Text(compilationOutput)
@@ -87,6 +91,19 @@ int main() {
     }
 }
 
+// Disable smart quote (replacing ' and " with Unicode characters) as this prevents compilation
+// https://stackoverflow.com/questions/66432017/disable-auto-replacement-of-punctuation-in-swiftui-texteditor
+// This does not work on Mac Catalyst: change in System preferences > Keyboard > Text > for Double/Single Quotes, choose the last quote style (amongst the 8 possible types).
+// https://developer.apple.com/forums/thread/124410
+// Note that simply uncheck "Use smart quotes and dashes" does not work either.
+extension UITextView {
+    open override var frame: CGRect {
+        didSet {
+            self.smartQuotesType = UITextSmartQuotesType.no
+        }
+    }
+}
+
 struct ContentView_Previews: PreviewProvider {
     static var previews: some View {
         ContentView()