[LLVMdev] phabricator diff question

[reed kotler]

I want to update (or create) a revision and want it to show only the 
difference between two git branches.

for example:

1758_9a and 1758_10a

if I do a :

git diff 1758_9a..1758_10

I get the diff that I want.

however if I am in branch 1758_10a and do a :


~/arcanist/bin/arc diff 1758_9a --create

if will highlight all lines in both change 1758_9a and 1758_10a from the 
master branch

How do I get it to just highlight the difference between 1758_9a and 
1758_10a.

tia.

Reed