commit df4dccfb1b31b44500748f7e8a49219e3bce426b
author Paul Wankadia <junyer@google.com> Thu Sep 02 04:47:20 2021 -0700
committer Paul Wankadia <junyer@google.com> Thu Sep 02 12:06:50 2021 +0000
tree e4c7978bc9cc6a9de6e396a05d56d27d7fb00ff9
parent 8e08f47b11b413302749c0d8b17a1c94777495d5

Inspect substrings with a Walker<> instead of Prefilter.

For reasons related to its Boolean operations, Prefilter doesn't
necessarily surface all substrings. As a result, a lot of large
substrings were flying under the radar.

Change-Id: I92eca70108df4ed64b72e0211d3c485a717ce50a
Reviewed-on: https://code-review.googlesource.com/c/re2/+/59270
Reviewed-by: Perry Lorier <perryl@google.com>
Reviewed-by: Paul Wankadia <junyer@google.com>