PR11399: Allow '**' to match tapsets across '.'

Normally wildcards are constrained to matching a single probe point
component between the '.' separator.  This patch enables '**' to match
across the separator.

Probe point parameters are still absolute separators though, as there's
not really a meaningful semantic we could use to cross them with '**'.

* elaborate.cxx (isdoubleglob): Check for '**'.
  (match_node::find_and_build): Recurse '**' to cross separators.
* testsuite/semok/doubleglob.stp: New test of broad wildcards.
* testsuite/semko/doubleglob.stp: New negative test.

1 files changed, 3 insertions, 0 deletions

diff --git a/testsuite/semko/doubleglob.stp b/testsuite/semko/doubleglob.stp
new file mode 100755
index 00000000..55a50760
--- /dev/null
+++ b/testsuite/semko/doubleglob.stp
@@ -0,0 +1,3 @@
+#! stap -p2
+
+probe foo**bar {}