From: Mark Wooding <mdw@distorted.org.uk>
Date: Fri, 8 May 2020 22:45:11 +0000 (+0100)
Subject: dot/shell-rc: Behave usefully in Cygwin elevated sessions.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/profile/commitdiff_plain/08785e51dfecd7f2ebc801df58971c787c33ae47

dot/shell-rc: Behave usefully in Cygwin elevated sessions.

Decorate the prompt as if we're root -- which, really, we basically are
-- and put a `%admin' marker in the window title.
---

diff --git a/dot/shell-rc b/dot/shell-rc
index 9857a82..7313cee 100644
--- a/dot/shell-rc
+++ b/dot/shell-rc
@@ -67,12 +67,26 @@ __mdw_hqual=$__mdw_hqual${SCHROOT_CHROOT_NAME+/$SCHROOT_CHROOT_NAME}
 __mdw_hqual=$__mdw_hqual${CROSS_BUILDENV+/$CROSS_BUILDENV}
 __mdw_set_prompt_hacks () { host=$__mdw_host; dir=""; }
 
+__mdw_system=$(uname -s)
 : ${USER-${LOGNAME-$(id -un)}}
 __mdw_user=$USER
 
 case $(id -u) in
-  0) __mdw_rootp=t ;;
-  *) __mdw_rootp=nil ;;
+  0)
+    __mdw_rootp=t
+    ;;
+  *)
+    case $__mdw_system in
+      CYGWIN_*)
+	case " $(id -G) " in
+	  *" 544 "*) __mdw_rootp=t __mdw_user="$__mdw_user%admin" ;;
+	  *) __mdw_rootp=nil ;;
+	esac
+	;;
+      *)
+	__mdw_rootp=nil
+	;;
+    esac
 esac
 
 __mdw_set_prompt_pieces () {