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author | Kasumi Hanazuki <kasumi@rollingapple.net> | 2020-08-13 02:26:09 +0000 |
---|---|---|
committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2020-08-13 20:54:12 +0900 |
commit | 014a4fda54cb6897ed54ea9c44376db3459fc46e (patch) | |
tree | e9f9750eec6b6e644ddb0095b75fe779eb19c39f /test | |
parent | 5d71eed1a7f0a70db013de59cd7e95bdca0d5c0e (diff) | |
download | ruby-014a4fda54cb6897ed54ea9c44376db3459fc46e.tar.gz |
rb_str_{index,rindex}_m: Handle /\K/ in pattern
When the pattern Regexp given to String#index and String#rindex
contain a /\K/ (lookbehind) operator, these methods return the
position where the beginning of the lookbehind pattern matches, while
they are expected to return the position where the \K matches.
```
# without patch
"abcdbce".index(/b\Kc/) # => 1
"abcdbce".rindex(/b\Kc/) # => 4
```
This patch fixes this problem by using BEG(0) instead of the return
value of rb_reg_search.
```
# with patch
"abcdbce".index(/b\Kc/) # => 2
"abcdbce".rindex(/b\Kc/) # => 5
```
Fixes [Bug #17118]
Diffstat (limited to 'test')
-rw-r--r-- | test/ruby/test_string.rb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb index 308ba80373..489eee33dc 100644 --- a/test/ruby/test_string.rb +++ b/test/ruby/test_string.rb @@ -1353,6 +1353,8 @@ CODE assert_nil("foo".index(//, -100)) assert_nil($~) + + assert_equal(2, S("abcdbce").index(/b\Kc/)) end def test_insert @@ -1525,6 +1527,8 @@ CODE assert_equal(3, "foo".rindex(//)) assert_equal([3, 3], $~.offset(0)) + + assert_equal(5, S("abcdbce").rindex(/b\Kc/)) end def test_rjust |