ezhil, 110 bytes

Result

AC

Duration

1274ms

Code [DL]

L=raw_input("")@(!len(R=rstrip(raw_input(L+"\n"))))வரை முடி printf(R+"*"*(find(L,"T")-len(R)+1))

stdin

                           T                      
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
 K                                                

stdout

                           T                      
                           T                      
                           T                      
                           T                      
                           T                      
                           T                      
                           T                      
                           T                      
                           T                      
                           T                      
 K**************************

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffc2f5cd410 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55b6b7c1ad30 /* 7 vars */ <unfinished ...>
12    execve("/usr/bin/ezhili", ["/usr/bin/ezhili", "/volume/CODE"], 0x55b6b7c1ad40 /* 7 vars */ <unfinished ...>
11    <... execve resumed> )            = 0
12    <... execve resumed> )            = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=16, si_stime=10} ---
10    +++ exited with 0 +++