Minor fixes to README and main file after review

README.md

@@ -66,7 +66,7 @@ To learn how to use restic backup client with REST backend, please consult [rest
           --tls-key string       TLS key path
       -V, --version              output version and exit
 
-By default the server persists backup data in the O.S. temporary directory (`/tmp/restic` on Linux/BSD and others, in `%TEMP%\\restic` in Windows, etc).  To start the server with a custom persistence directory and with authentication disabled:
+By default the server persists backup data in the OS temporary directory (`$TMPDIR/restic` on Linux/BSD and others when `TMPDIR` is not empty, `/tmp/restic` otherwise; `%TEMP%\\restic` in Windows, etc).  To start the server with a custom persistence directory and with authentication disabled:
 
     rest-server --path /user/home/backup --no-auth
 

changelog/unreleased/pull-158

@@ -1,8 +1,8 @@
-Bugfix: Use os.TempDir() for temporary directory in default path
+Bugfix: Use platform-specific temporary directory in default path
 
 Instead of using hardcoded value for temporary directory, rest-server now uses
-Go stdlib `os.TempDir()` function, which returns the correct temporary path for
-all platforms.
+Go standard library functions to retrieve the temporary directory path for the
+current platform.
 
 https://github.com/restic/rest-server/issues/157
 https://github.com/restic/rest-server/pull/158

cmd/rest-server/main.go

@@ -27,7 +27,7 @@ var cmdRoot = &cobra.Command{
 }
 
 var server = restserver.Server{
-	Path:   fmt.Sprintf("%s%c%s", os.TempDir(), os.PathSeparator, "restic"),
+	Path:   filepath.Join(os.TempDir(), "restic"),
 	Listen: ":8000",
 }