处理\n

CustomKeyboard/Network/KBStreamFetcher.m

@@ -289,6 +289,15 @@ static NSUInteger kb_validUTF8PrefixLen(NSData *data) {
 - (void)emitChunk:(NSString *)rawText {
     if (rawText.length == 0) return;
     NSString *text = rawText;
+    // 0) 规范化换行与段起始：去掉位于片段开头的 \r/\n；将 "\n\t"、"\r\n\t"、"\r\t" 归一为 "\t"
+    text = [text stringByReplacingOccurrencesOfString:@"\r\n\t" withString:@"\t"];
+    text = [text stringByReplacingOccurrencesOfString:@"\n\t" withString:@"\t"];
+    text = [text stringByReplacingOccurrencesOfString:@"\r\t" withString:@"\t"];
+    while (text.length > 0) {
+        unichar c0 = [text characterAtIndex:0];
+        if (c0 == '\n' || c0 == '\r') { text = [text substringFromIndex:1]; continue; }
+        break;
+    }
     // 1) 统一处理 “/t” -> “\t”
     if (self.treatSlashTAsTab) {
         text = [text stringByReplacingOccurrencesOfString:@"/t" withString:@"\t"];

CustomKeyboard/View/KBFunctionView.m

@@ -99,7 +99,7 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
     // 右侧竖排按钮容器
     [self addSubview:self.rightButtonContainer];
     [self.rightButtonContainer mas_makeConstraints:^(MASConstraintMaker *make) {
-        make.right.equalTo(self.mas_right).offset(-12);
+        make.right.equalTo(self.mas_right).offset(-6);
         make.top.equalTo(self.barViewInternal.mas_bottom).offset(8);
         make.bottom.equalTo(self.mas_bottom).offset(-10);
         make.width.mas_equalTo(72);
@@ -208,10 +208,15 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
     [self addSubview:overlay];
     [overlay mas_makeConstraints:^(MASConstraintMaker *make) {
         make.left.equalTo(self.mas_left).offset(12);
-        make.right.equalTo(self.rightButtonContainer.mas_left).offset(-12);
+        // 流式期间占满右侧宽度：不再贴 rightButtonContainer，让文本有最大宽度
+        make.right.equalTo(self.mas_right).offset(-12);
         make.top.equalTo(self.pasteViewInternal.mas_bottom).offset(10);
         make.bottom.equalTo(self.mas_bottom).offset(-10);
     }];
+    // 隐藏右侧按钮栏，最大化文本宽度；关闭 overlay 时再恢复
+    self.rightButtonContainer.hidden = YES;
+    // 适当缩小内部左右留白，进一步提升可用宽度
+    overlay.textView.contentHorizontalPadding = 8.0;
     self.streamOverlay = overlay;
 
     // 只创建 UI；网络在点击 cell 时启动，避免重复 start 导致首包重复
@@ -223,6 +228,8 @@ static NSString * const kKBFunctionTagCellId = @"KBFunctionTagCellId";
     [self.streamOverlay removeFromSuperview];
     self.streamOverlay = nil;
     self.tagListView.hidden = NO;
+    // 恢复右侧按钮栏
+    self.rightButtonContainer.hidden = NO;
 }
 
 // 叠层关闭回调