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author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-09-29 11:56:43 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-09-29 11:56:43 +0000 |
commit | 90d7b70d8e59e665a91d47725555a21dd10ee45a (patch) | |
tree | 0cf1ac56284db49889a2679a2900dc50e60e14d7 /string.c | |
parent | 15b585277b0cc29fb92071cc84acb700850781d1 (diff) | |
download | ruby-90d7b70d8e59e665a91d47725555a21dd10ee45a.tar.gz ruby-90d7b70d8e59e665a91d47725555a21dd10ee45a.tar.xz ruby-90d7b70d8e59e665a91d47725555a21dd10ee45a.zip |
* 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
Diffstat (limited to 'string.c')
-rw-r--r-- | string.c | 10 |
1 files changed, 9 insertions, 1 deletions
@@ -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); |