I found out that Bitbucket Stash gives Triple Dot Diff from source branch to destination branch in the Compare . But, I would like to get Double Dot Diff between the two branches in Stash UI/ Stash REST API.
Double dot diff vs triple dot diff :- https://stackoverflow.com/questions/7251477/what-are-the-differences-between-double-dot-and-triple-dot-in-git-dif
In short, Double dot diff is diff from HEAD commit of source branch to that of destination branch. And, Triple dot diff is diff from common ancestor of two branches to destination branch.
Any idea on how I can get Triple dot diff from source to destination branches using Stash REST API and/or Stash UI?