From 4895b0c9bda9e46fc7db173e239d155dac957186 Mon Sep 17 00:00:00 2001
From: Ian Douglas Scott <idscott@system76.com>
Date: Fri, 28 Jul 2023 12:44:57 -0700
Subject: [PATCH] config: Implement `fmt::Display` and `std::error::Error` for
 `Error` (#136)

---
 cosmic-config/src/lib.rs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/cosmic-config/src/lib.rs b/cosmic-config/src/lib.rs
index 20e03a55..e3d82138 100644
--- a/cosmic-config/src/lib.rs
+++ b/cosmic-config/src/lib.rs
@@ -9,7 +9,7 @@ use notify::{
 use serde::{de::DeserializeOwned, Serialize};
 use std::{
     borrow::Cow,
-    fs,
+    fmt, fs,
     hash::Hash,
     io::Write,
     path::{Path, PathBuf},
@@ -33,6 +33,22 @@ pub enum Error {
     RonSpanned(ron::error::SpannedError),
 }
 
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Self::AtomicWrites(err) => err.fmt(f),
+            Self::InvalidName(name) => write!(f, "invalid config name '{}'", name),
+            Self::Io(err) => err.fmt(f),
+            Self::NoConfigDirectory => write!(f, "cosmic config directory not found"),
+            Self::Notify(err) => err.fmt(f),
+            Self::Ron(err) => err.fmt(f),
+            Self::RonSpanned(err) => err.fmt(f),
+        }
+    }
+}
+
+impl std::error::Error for Error {}
+
 impl From<atomicwrites::Error<std::io::Error>> for Error {
     fn from(f: atomicwrites::Error<std::io::Error>) -> Self {
         Self::AtomicWrites(f)