From ff6fd2b1447e1174c553e745796be15461f1b902 Mon Sep 17 00:00:00 2001
From: Ade Attwood <adrian.attwood@marketdojo.com>
Date: Thu, 28 Nov 2024 17:58:57 +0000
Subject: [PATCH] feat(sapling): add `ddd` alias for diffing like `...` diff
 from git

When using sapling I often use `HEAD...origin/main` to diff the current
changes. This replicates this so you can diff a commit with other changes and
or merge commits in it.
---
 site-modules/core/templates/sapling.conf.liquid | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/site-modules/core/templates/sapling.conf.liquid b/site-modules/core/templates/sapling.conf.liquid
index 69f13af..4a7d7c6 100644
--- a/site-modules/core/templates/sapling.conf.liquid
+++ b/site-modules/core/templates/sapling.conf.liquid
@@ -32,3 +32,8 @@ pager = delta
 nvim_diff.executable = nvim
 nvim_diff.args = -d $base $local $other
 nvim_diff.priority = 1
+
+[revsetalias]
+# Diff between two revs. This is the same as `<rev>...<rev>`, unlike `a::b`
+# this is equivalent to `a..b` in git.
+ddd(a, b) = ancestor(a, b)::b