[6640] allow any file number after \openout

[Gavin D. Smith]

Revision: 6640
          http://svn.sv.gnu.org/viewvc/?view=rev&root=texinfo&revision=6640
Author:   gavin
Date:     2015-09-23 14:53:24 +0000 (Wed, 23 Sep 2015)
Log Message:
-----------
allow any file number after \openout

Modified Paths:
--------------
    trunk/util/texi2dvi

Modified: trunk/util/texi2dvi
===================================================================
--- trunk/util/texi2dvi 2015-09-22 23:43:43 UTC (rev 6639)
+++ trunk/util/texi2dvi 2015-09-23 14:53:24 UTC (rev 6640)
@@ -1440,7 +1440,7 @@
   verbose "Checking TeX \openout in log support..."
   make_openout_test "" log
   if test -f openout.log \
-     && grep '^\\openout0 *= *`\?dum\.dum'\''\?' openout.log >/dev/null
+     && grep '^\\openout..\? *= *`\?dum\.dum'\''\?' openout.log >/dev/null
   then
     cd_orig
     verbose "Checking TeX \openout in log support... yes"