From: Christoph Anton Mitterer <calestyo@gmail.com>
Date: Thu, 16 Oct 2014 02:45:23 GMT
Subject: FEAUTRE-REQUEST: upon git difftool, files which cannot be modified (persistently) should be made read only
Message-ID: <1413427523.4706.40.camel@gmail.com>

Hi.

Apparently since a while, git difftool has the awseome feature,
that it just symlinks the files to the working copy, if a diff with
that is requested.

e.g. something like:
git difftool -d
will have 
/tmp/git-difftool.TWYTA

created with subdirs

left:
-rw-r--r-- 1 user     user      45k Oct 16 04:33 file

right: 
lrwxrwxrwx 1 calestyo calestyo   52 Oct 16 04:33 file -> /home/user/foo/file

When one edits and saves this in one's favourite difftool,... it
actually gets into the working copy.

But of course saving the left (in this example) has no effect, so it
would be nice if all these files were marked readonly, so that one
already sees in the difftool "changes here are useless".


Cheers,
Chris.