text: //
  // 
  //
  
  #ifndef SHELL_BACKSPACE_H
  #define SHELL_BACKSPACE_H
  
  #include <cstdio>
  #include <unistd.h>
  #include <string>
  #include "SpecialInput.h"
  #include "KeyboardOperation.h"
  #include "Left.h"
  #include "proc-util.h"
  
  class Backspace : public SpecialInput {
  private:
      static Backspace *instance;
  
      Backspace();
  
  public:
      char *onClick(char *&lines, History &history, char *content, int &length, char *path, Environment &env);
  
      static Backspace *getInstance();
  
  };
  
  #endif //SHELL_BACKSPACE_H
  