From 90d7b70d8e59e665a91d47725555a21dd10ee45a Mon Sep 17 00:00:00 2001 From: akr Date: Mon, 29 Sep 2008 11:56:43 +0000 Subject: * string.c (rb_str_subseq): use rb_str_drop_bytes if possible. git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@19624 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- string.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'string.c') diff --git a/string.c b/string.c index 7d6f30555..cf7f484c7 100644 --- a/string.c +++ b/string.c @@ -1283,7 +1283,15 @@ rb_str_sublen(VALUE str, long pos) VALUE rb_str_subseq(VALUE str, long beg, long len) { - VALUE str2 = rb_str_new5(str, RSTRING_PTR(str)+beg, len); + VALUE str2; + + if (RSTRING_LEN(str) == beg + len) { + str2 = rb_str_new_shared(str); + rb_str_drop_bytes(str2, beg); + } + else { + str2 = rb_str_new5(str, RSTRING_PTR(str)+beg, len); + } rb_enc_cr_str_copy_for_substr(str2, str); OBJ_INFECT(str2, str); -- cgit