From c5acb1015183507a2575934dcfef7d513fff26e0 Mon Sep 17 00:00:00 2001
From: albertony <12441419+albertony@users.noreply.github.com>
Date: Thu, 19 Jan 2023 21:38:24 +0100
Subject: [PATCH] fspath: allow the symbols at and plus in remote names - fixes
 #6710

---
 docs/content/docs.md   | 2 +-
 fs/config/ui_test.go   | 2 +-
 fs/fspath/path.go      | 6 +++---
 fs/fspath/path_test.go | 4 ++++
 4 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/docs/content/docs.md b/docs/content/docs.md
index 8c9cae769..b00177c2b 100644
--- a/docs/content/docs.md
+++ b/docs/content/docs.md
@@ -338,7 +338,7 @@ Will get their own names
 ### Valid remote names
 
 Remote names are case sensitive, and must adhere to the following rules:
- - May contain number, letter, `_`, `-`, `.` and space.
+ - May contain number, letter, `_`, `-`, `.`, `+`, `@` and space.
  - May not start with `-` or space.
  - May not end with space.
 
diff --git a/fs/config/ui_test.go b/fs/config/ui_test.go
index 0756481d1..6a4d5aee0 100644
--- a/fs/config/ui_test.go
+++ b/fs/config/ui_test.go
@@ -183,7 +183,7 @@ func TestNewRemoteName(t *testing.T) {
 	config.ReadLine = makeReadLine([]string{
 		"test",           // already exists
 		"",               // empty string not allowed
-		"bad@characters", // bad characters
+		"bad^characters", // bad characters
 		"newname",        // OK
 	})
 
diff --git a/fs/fspath/path.go b/fs/fspath/path.go
index 5a6775207..09e71d08e 100644
--- a/fs/fspath/path.go
+++ b/fs/fspath/path.go
@@ -13,12 +13,12 @@ import (
 )
 
 const (
-	configNameRe              = `[\w\p{L}\p{N}.]+(?:[ -]+[\w\p{L}\p{N}.-]+)*` // May contain Unicode numbers and letters, as well as `_`, `-`, `.` and space, but not start with `-` (it complicates usage, see #4261) or space, and not end with space
-	illegalPartOfConfigNameRe = `^[ -]+|[^\w\p{L}\p{N}. -]+|[ ]+$`
+	configNameRe              = `[\w\p{L}\p{N}.+@]+(?:[ -]+[\w\p{L}\p{N}.+@-]+)*` // May contain Unicode numbers and letters, as well as `_` (covered by \w), `-`, `.`, `+`, `@` and space, but not start with `-` (it complicates usage, see #4261) or space, and not end with space
+	illegalPartOfConfigNameRe = `^[ -]+|[^\w\p{L}\p{N}.+@ -]+|[ ]+$`
 )
 
 var (
-	errInvalidCharacters = errors.New("config name contains invalid characters - may only contain numbers, letters, `_`, `-`, `.` and space, while not start with `-` or space, and not end with space")
+	errInvalidCharacters = errors.New("config name contains invalid characters - may only contain numbers, letters, `_`, `-`, `.`, `+`, `@` and space, while not start with `-` or space, and not end with space")
 	errCantBeEmpty       = errors.New("can't use empty string as a path")
 	errBadConfigParam    = errors.New("config parameters may only contain `0-9`, `A-Z`, `a-z` and `_`")
 	errEmptyConfigParam  = errors.New("config parameters can't be empty")
diff --git a/fs/fspath/path_test.go b/fs/fspath/path_test.go
index d1828c102..07becd876 100644
--- a/fs/fspath/path_test.go
+++ b/fs/fspath/path_test.go
@@ -41,6 +41,8 @@ func TestCheckConfigName(t *testing.T) {
 		{"..", nil, ".."},
 		{".r.e.m.o.t.e.", nil, ".r.e.m.o.t.e."},
 		{"rem ote", nil, "rem ote"},
+		{"user@example.com", nil, "user@example.com"},
+		{"user+junkmail@example.com", nil, "user+junkmail@example.com"},
 		{"blåbær", nil, "blåbær"},
 		{"chữ Quốc ngữ", nil, "chữ Quốc ngữ"},
 		{"remote ", errInvalidCharacters, "remote_"},
@@ -68,6 +70,8 @@ func TestCheckRemoteName(t *testing.T) {
 		{".r.e.m.o.t.e.:", nil},
 		{"-r-emote-:", errInvalidCharacters},
 		{"rem ote:", nil},
+		{"user@example.com:", nil},
+		{"user+junkmail@example.com:", nil},
 		{"blåbær:", nil},
 		{"chữ Quốc ngữ:", nil},
 		{"remote :", errInvalidCharacters},