+ ; p prints current line
+ mov eax, DWORD [ebp-CMDSTR]
+ cmp BYTE [eax], 'p'
+ jne _repl_cmd_print_end
+
+ mov eax, DWORD [cur_line]
+ mov ecx, 4
+ mul ecx
+ add eax, [buffer]
+ push DWORD [eax]
+ push echo_str
+ call printf
+ jmp _repl_continue
+ _repl_cmd_print_end:
+
+ ; n prints the current line number
+ mov eax, DWORD [ebp-CMDSTR]
+ cmp BYTE [eax], 'n'
+ jne _repl_cmd_number_end
+
+ push DWORD [cur_line]
+ push currentline_str
+ call printf
+
+ jmp _repl_continue
+ _repl_cmd_number_end:
+
+ ; - goes to prev line
+ mov eax, DWORD [ebp-CMDSTR]
+ cmp BYTE [eax], '-'
+ jne _repl_cmd_decline_end
+
+ ; make sure we are within bounds
+ mov eax, DWORD [cur_line]
+ sub eax, 1
+ cmp eax, 0
+ jl _repl_invalid_addr
+
+ sub DWORD [cur_line], 1
+
+ jmp _repl_continue
+ _repl_cmd_decline_end:
+
+ ; + goes to next line
+ mov eax, DWORD [ebp-CMDSTR]
+ cmp BYTE [eax], '+'
+ jne _repl_cmd_incline_end
+
+ ; make sure we are within bounds
+ mov eax, DWORD [cur_line]
+ add eax, 1
+ cmp eax, [buffer_lines]
+ jge _repl_invalid_addr
+
+ add DWORD [cur_line], 1
+
+ jmp _repl_continue
+ _repl_cmd_incline_end:
+
+
+ jmp _repl_invalid_cmd
+
+ ; some error messages
+ _repl_invalid_cmd:
+ push invalidcmd_str
+ call printf
+ jmp _repl_continue