[Tfug] Version Control

[Glen Pfeiffer]

On 26 Mar 2013, Bexley Hall wrote:
> > I haven't looked into exactly why they use a multiple of 
> > memory to do this, but internally they calculate a SHA1 sum 
> > on the object before adding it to the repo, and compare it 
> > against other files in order to save just the changes, and 
> > compress it.  This also serves to dedupe the repo contents.
> 
> OK.  But, lots of things end up as BLOBs, then.  Pictures, 
> executables, test suites, non-ASCII documentation, schematics, 
> etc.  And, no way to meaningfully compare them other than to 
> say, "THIS is not THAT".

The approach taken by *every* revision control system I have ever 
used, is that they are not responsible for meaningfully comparing 
two objects; they track changes. When you need to meaningfully 
compare them, you farm that out to an app appropriate for that 
file type.

-- 
Glen