QRegularExpression: match newlines when converting wildcards

A * or a ? in a wildcard pattern is allowed to match any character,
including newlines. When converting a wildcard pattern to a PCRE,
* and ? were converted to ., which by default does _not_ match over
newlines (/s is necessary).

There isn't a metacharacter that matches everything, so either we modify
the returned pattern to enable dot-matches-all (for instance, by
wrapping the returned expression in (?s:...)), or use a character class
that includes everything. Picking this last approach for simplicity.

Change-Id: I86703f654e3414783427c4c8e0bb018885b42e54
Fixes: QTBUG-113676
Pick-to: 6.5
Reviewed-by: Samuel Gaist <samuel.gaist@idiap.ch>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp b/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp
index 5a8dc2b373..02c2725ba4 100644
--- a/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp
+++ b/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp
@@ -2491,6 +2491,10 @@ void tst_QRegularExpression::wildcard_data()
     addRow("foo/(?)/bar", "foo/(Q)/bar", true, true);
 
     addRow("foo*bar", "foo/fie/baz/bar", false, true);
+    addRow("foo*bar", "foo bar", true, true);
+    addRow("foo*bar", "foo\tbar", true, true);
+    addRow("foo*bar", "foo\nbar", true, true);
+    addRow("foo*bar", "foo\r\nbar", true, true);
 
     // different anchor modes
     addRow("foo", "afoob", false, false, true);