Re: Compare files, save differences

On Mon, Apr 21, 2014 at 5:14 AM, Jeri Raye <jeri.raye@gmail.com> wrote:

Hi,

I have a file allwords.txt.
And I have another file mywords.txt

How can I filter the differences, and safe them in another file called difwords.txt?

Example:
+------ allwords.txt -------+
James
Richard
Anna
Claude
Ben
+------------+

+------mywords.txt-----+
Anna
Ben
+-------------------+

This should then make the following file

+------difwords.txt-----+
James
Richard
Claude
+-----------+

Jeri,

I had the same problem when I create Vim syntax files.

I have a list of "words" and I need to compare those against all the words in my Vim syntax file.  So when the product I wrote the syntax file for comes out with a new version, there is typically more "keywords" which need to be added to the syntax file.

I have a process which creates 1 file with all the keywords for the new version.  Now I need to merge that with my existing Vim syntax file.

I want to see any combination of:

1.  All words missing.

2.  All words in both (not missing).

3.  Can also do the same linewise, rather than wordwise. 

So I wrote a plugin to do it:

WhatMissing.vim - Shows what is missing between 2 buffers

http://vim.sourceforge.net/script.php?script_id=1108

It has a menu to help with the choices and getting started.

Enjoy.

David

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