[daisy] [GSoc] daisydiff progress update 3

[Guy Van den Broeck]

> As an example, think of long document where only the href of a link
> changed, it can take quite some time to find where the curly-blue
> underlined link is.

Press "right arrow" or click "first"
    
> Another solution would be different modes for diffs. When you look at 
> TWiki.org for example, they provide different modes to compare revisions:
> 
> sequential
> - Demo: http://twiki.org/cgi-bin/rdiff/Codev/TWikiStandAlone?rev1=3;rev2=1
> - displays, also for severeal versions, only the changed part of the 
> document.
> - This view is very useful for large documents and many contributors, as 
> you don´t have to scoll over the whole document in order to discover the 
> change. And you get an overview when something gets changed in a 
> timeline order.
> - The view has a parameter called context, which defines the number of 
> displayed lines above and below the changed line
> 
> side-by-side
> - Demos:
>   - 
> http://twiki.org/cgi-bin/rdiff/Codev/TWikiStandAlone?rev2=2&rev1=4&render=sidebyside 
> 
>   - 
> http://svn.apache.org/viewvc/apr/apr/trunk/misc/unix/rand.c?r1=382552&r2=384930&pathrev=553146&diff_format=h 
> 
> - This is similar to the former suggested columns and will display the 
> changes, also for several versions in a timely manner

It's not very easy to remove unchanged html above and below the change.
A lot of documents are just big tables or lists; then you will have to
remove children of the list instead of the body; then what about
numbered lists; ...
I'm not saying it can't be done. It's just a lot of work for solving a
problem twice.

> They also have the option to diplay it in "raw-format". This would 
> probably be the old version of diffing, where you can see changes within 
> the html code (Bruno would called it CLASSIC)

Your suggestion would work for the classic mode. I'm not sure how often
the classic mode will be used now that we have the Html mode. It might
not be worth the trouble?

guy