(AS_SHELL_SANITIZE): "source" -> ".", for compatibility with POSIX shells.

diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index f0738013fb8403551ac5eacdc71df4408f3026dc..e788ea505be729f40c803c80a96984d7ec2f898b 100644 (file)
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -155,7 +155,7 @@ if test "x$as_lineno_1"  = "x$as_lineno_2" ||
   # Don't try to exec as it changes $[0], causing all sort of problems
   # (the dirname of $[0] is not the place where we might find the
   # original and so on.  Autoconf is especially sensible to this).
-  source ./$as_me.lineno
+  . ./$as_me.lineno
   exit 0
 fi