Allow more services (those that do not produce input and those that accept...

Allow more services (those that do not produce input and those that accept input) to appear in the services menu. Issue 5942

sources/PTYTextView.m

@@ -5583,11 +5583,11 @@ static double EuclideanDistance(NSPoint p1, NSPoint p2) {
 // service stuff
 - (id)validRequestorForSendType:(NSString *)sendType returnType:(NSString *)returnType
 {
-    if (sendType != nil && [sendType isEqualToString: NSStringPboardType]) {
+    if (sendType == nil || [sendType isEqualToString:NSStringPboardType]) {
         return self;
     }
-    return ([super validRequestorForSendType: sendType returnType: returnType]);
+    return ([super validRequestorForSendType:sendType returnType:returnType]);
 }
 // Service
@@ -5610,9 +5610,8 @@ static double EuclideanDistance(NSPoint p1, NSPoint p2) {
 }
 // Service
-- (BOOL)readSelectionFromPasteboard:(NSPasteboard *)pboard
-{
-    return NO;
+- (BOOL)readSelectionFromPasteboard:(NSPasteboard *)pboard {
+    return YES;
 }
 // This textview is about to be hidden behind another tab.