1 LET = LEave Test-framework

     2 

     3 

     4 fl:  a cpp filelist

     5 fl (dir1)?

     6 

     7 let: main testframework

     8 let -f cpp_file_list -o log_dir

     9 let --std-in -o log_dir

    10 

    11 logdiff: print the changes between to log dir

    12 logdiff log_dir_1 log_dir_2