phabricator diff question

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

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 assume just replacing 'git' with 'arc' here doesn't work? What's the
error?