add helper method so autocomplete can replace with attributed strings

Source/SLKTextViewController.h

@@ -509,7 +509,7 @@ NS_CLASS_AVAILABLE_IOS(7_0) @interface SLKTextViewController : UIViewController
 
 /**
  Accepts the autocompletion, replacing the detected word with a new string, keeping the prefix.
- This method is a convinience of -acceptAutoCompletionWithString:keepPrefix:
+ This method is a convenience of -acceptAutoCompletionWithString:keepPrefix:
 
  @param string The string to be used for replacing autocompletion placeholders.
  */
@@ -523,6 +523,13 @@ NS_CLASS_AVAILABLE_IOS(7_0) @interface SLKTextViewController : UIViewController
  */
 - (void)acceptAutoCompletionWithString:(NSString *_Nullable)string keepPrefix:(BOOL)keepPrefix;
 
+/**
+ Accepts the autocompletion, replacing the detected word with a new attributed string, and optionally replacing the prefix too.
+
+ @param attributedString The attributed string to be used for replacing autocompletion placeholders.
+ @param keepPrefix YES if the prefix shouldn't be overidden.
+ */
+- (void)acceptAutoCompletionWithAttributedString:(NSAttributedString *_Nullable)attributedString keepPrefix:(BOOL)keepPrefix;
 
 #pragma mark - Text Caching
 ///------------------------------------------------

Source/SLKTextViewController.m

@@ -1760,6 +1760,32 @@ - (void)acceptAutoCompletionWithString:(NSString *)string keepPrefix:(BOOL)keepP
     [self cancelAutoCompletion];
 }
 
+- (void)acceptAutoCompletionWithAttributedString:(NSAttributedString *)attributedString keepPrefix:(BOOL)keepPrefix
+{
+    if (attributedString.length == 0) {
+        return;
+    }
+
+    NSUInteger location = self.foundPrefixRange.location;
+    if (keepPrefix) {
+        location += self.foundPrefixRange.length;
+    }
+
+    NSUInteger length = self.foundWord.length;
+    if (!keepPrefix) {
+        length += self.foundPrefixRange.length;
+    }
+
+    NSRange range = NSMakeRange(location, length);
+    NSRange insertionRange = [self.textView slk_insertAttributedText:attributedString inRange:range];
+
+    self.textView.selectedRange = NSMakeRange(insertionRange.location, 0);
+
+    [self.textView slk_scrollToCaretPositonAnimated:NO];
+
+    [self cancelAutoCompletion];
+}
+
 - (void)cancelAutoCompletion
 {
     [self slk_invalidateAutoCompletion];