dot/shell-rc: Get user name from id(1) if it's not in the environment.

diff --git a/dot/shell-rc b/dot/shell-rc
index 11b9fc7f8e04296eeae7ba8acf116c0db337eb3f..ac8819dcbe0a1fa3e5ab02bd8563114b15f0e65d 100644 (file)
--- a/dot/shell-rc
+++ b/dot/shell-rc
@@ -37,7 +37,7 @@ __mdw_set_prompt_pieces () {
   ## highlight when I'm running as some other user.  Highlight when this
   ## isn't the outermost shell on the terminal.
   local left right user u tty
-  user=${USER-$LOGNAME}
+  user=${USER-${LOGNAME-$(id -un)}}
   case $(id -u) in
     0)
       left=$(echo « | iconv -f UTF-8 -t //translit)