NAITOH Jun 338eb0065b [ruby/strscan] StringScanner#captures: Return nil not "" for ... unmached capture (https://github.com/ruby/strscan/pull/72) fix https://github.com/ruby/strscan/issues/70 If there is no substring matching the group (s[3]), the behavior is different. If there is no substring matching the group, the corresponding element (s[3]) should be nil. ``` s = StringScanner.new('foobarbaz') #=> #<StringScanner 0/9 @ "fooba..."> s.scan /(foo)(bar)(BAZ)?/ #=> "foobar" s[0] #=> "foobar" s[1] #=> "foo" s[2] #=> "bar" s[3] #=> nil s.captures #=> ["foo", "bar", ""] s.captures.compact #=> ["foo", "bar", ""] ``` ``` s = StringScanner.new('foobarbaz') #=> #<StringScanner 0/9 @ "fooba..."> s.scan /(foo)(bar)(BAZ)?/ #=> "foobar" s[0] #=> "foobar" s[1] #=> "foo" s[2] #=> "bar" s[3] #=> nil s.captures #=> ["foo", "bar", nil] s.captures.compact #=> ["foo", "bar"] ``` https://docs.ruby-lang.org/ja/latest/method/MatchData/i/captures.html ``` /(foo)(bar)(BAZ)?/ =~ "foobarbaz" #=> 0 $~.to_a #=> ["foobar", "foo", "bar", nil] $~.captures #=> ["foo", "bar", nil] $~.captures.compact #=> ["foo", "bar"] ``` * StringScanner#captures is not yet documented. https://docs.ruby-lang.org/ja/latest/class/StringScanner.html 1fbfdd3c6f		2024-01-14 22:27:24 +09:00
..
depend	Update the depend files	2023-02-28 09:09:00 -08:00
extconf.rb	Add function rb_reg_onig_match	2023-07-27 13:33:40 -04:00
strscan.c	[ruby/strscan] StringScanner#captures: Return nil not "" for	2024-01-14 22:27:24 +09:00
strscan.gemspec	Merge strscan-3.0.5	2022-12-09 16:36:22 +09:00