From 91f6e9d3ac0a8c26d08d7be9d1545830bf9bb189 Mon Sep 17 00:00:00 2001
From: Bryce Berger <bryce.z.berger@gmail.com>
Date: Thu, 28 Nov 2024 12:09:43 -0500
Subject: [PATCH] fileset: add docs for aliases

---
 docs/filesets.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/docs/filesets.md b/docs/filesets.md
index ec46a7c838..86999acd5a 100644
--- a/docs/filesets.md
+++ b/docs/filesets.md
@@ -61,6 +61,20 @@ You can also specify patterns by using functions.
 * `all()`: Matches everything.
 * `none()`: Matches nothing.
 
+## Aliases
+
+New symbols can be defined in the config file, using predefined symbols/
+functions and other aliases.
+
+Unlike revsets, aliases currently cannot be functions.
+
+For example:
+```toml
+[fileset-aliases]
+LIB = "root-glob:lib/**"
+NO_LOCK = "~root-glob:**/*.lock"
+```
+
 ## Examples
 
 Show diff excluding `Cargo.lock`.