So what is patchview? It is a wrapper of filterdiff for use with numbered files.

    $ patchview
    
Without args is equivalent to: lsdiff --number

    $ patchview -F2-

    
With one or more args is equivalent to: filterdiff args

There are 4 scripts for working with git repos (gitdiff, gitdiffview, gitshow and gitshowview) and 2 for svn (svndiff and svndiffview).
Also these scripts have option -v which shows the full command that is which is being executed.


    $ svndiff
    $ gitdiff 

Without args, will give the list of files modified
With args will show the patches according the args, for example, `gitdiff -F1` will show the patch for first file

    $ svndiffview
    $ gitdiffview
    
Without args will pipe all patches through filterdiff to `vim - -R` (in read-only mode, easy to quit), showing complete patch with colors.
With args will pipe the patches according the args, for example, `gitsvnview -F2` will pipe the patch for second file to `vim - -R`.

    $ gitshow
    $ gitshowview

Is the same of gitdiff but use `git show` instead of `git diff`. 

Example:
We can make the following one-line script with the name difftotrunk.sh, to view the differences of two directories or svn repos (trunk and .)

    diff ../trunk . -ru -x .svn | patchview "$@"

    $ ./difftotrunk.sh , will show all different files and his number.
    $ ./difftotrunk.sh -F3,4 , will show the differences of files #3 and #4 only.
    $ ./difftotrunk.sh -F3 -#1, will show only hunk #1 of file #3.
    $ ./difftotrunk.sh -F3 -#x1, will show the differences of files #3 without hunk #1 (x means that exclude).