[Bug-wget] feature proposal, "--hashes"

[gregry .]

Hi,

I recently joined the list to propose and discuss a new feature I'm considering 
adding to wget.  Namely, a command line option to generate hashes of downloaded 
content as downloading progresses.  This would typically be used in cases where 
the user wants to download something, and would also like to verify the 
integrity of what they've downloaded without requiring a manual second step 
(and re-read of the entire file from storage).

For example instead of simply:
wget http://favorite-distro.org/current/dvd.iso
... the user could specify an option to also generate hashes of downloaded 
content:
wget --hashes md5,sha1 http://favorite-distro.org/current/dvd.iso
... and after the download is successful, the digests of the content would be 
printed to the screen or log file, or both.