fish: More portable export sh statment.

Don't depend on bash, but allow sh/dash/etc format:
GUESTFISH_PID=nn; export GUESTFISH_PID

(Thanks Eric Blake).
(cherry picked from commit 633ae13c80d40b0f30db73e520c08cf365d2f8a3)

diff --git a/fish/rc.c b/fish/rc.c
index e637fc6..2d2f227 100644 (file)
--- a/fish/rc.c
+++ b/fish/rc.c
@@ -198,7 +198,7 @@ rc_listen (void)
 
   if (pid > 0) {
     /* Parent process. */
-    printf ("export GUESTFISH_PID=%d\n", pid);
+    printf ("GUESTFISH_PID=%d; export GUESTFISH_PID\n", pid);
     fflush (stdout);
     _exit (0);
   }