what does diff -M on hp-ux 11.0

[dkotian1]

Hi,

what does diff -M on hp-ux 11.0 do.

The -M option for diff is found in /usr/bin/merge script.
This is an extract what the merge script say about diff -M.
# The -M option causes diff to not cut off identical
# lines at the ends of the files

But, somehow it seems it does the same as diff without
an option.
Can someone give an good usage example of diff -M .


Thanks and Regards
Deepak

 

[mirov]

The option -M of diff command is not documented anywhere. It is probably some leftover from development period of this command.