[AC21.4] New shy groups regexp test

Arnaud Giersch donated this test to verify his regexp fix to cure the gnus infloop. Empirically it seems to work: it fails on 21.4.16 and passes on the latest 21.4 sources in CVS. Thanks for the patch, Arnaud! - Vin tests/ChangeLog addition: 2005-02-01 Vin Shelton <acs(a)xemacs.org&gt; * automated/regexp-tests.el: Added an additional shy groups test authored by Arnaud Giersch <arnaud.giersch(a)free.fr&gt; 21.4 source patch: Diff command: cvs -q diff -u Files affected: tests/automated/regexp-tests.el Index: tests/automated/regexp-tests.el =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/tests/automated/regexp-tests.el,v retrieving revision 1.2.2.9 diff -a -u -u -r1.2.2.9 regexp-tests.el --- tests/automated/regexp-tests.el 2005/01/16 02:39:18 1.2.2.9 +++ tests/automated/regexp-tests.el 2005/02/02 03:15:26 ＠＠ -442,5 +442,10 ＠＠ (Assert (string= text2 (match-string 0 text2))) (Assert (string= "a" (match-string 1 text2))) (Assert (null (match-string 2 text2))) + + ;; Test Arnaud Giersch's shy group fix + (Assert (progn (string-match "\\(a\\)" "a") + (string-match "\\(?:a\\)" "a") + (not (match-beginning 1)))) )