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* array.c (rb_ary_flatten_bang): returns nil if nothing changed.

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a patch from Marc-Andre Lafortune in [ruby-core:23382].


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23361 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2009-05-07 07:40:11 +00:00
parent 2f16447239
commit 94ee3e7e02
3 changed files with 9 additions and 1 deletions
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2
array.c
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@ -3338,7 +3338,7 @@ rb_ary_flatten_bang(int argc, VALUE *argv, VALUE ary)
rb_scan_args(argc, argv, "01", &lv);
if (!NIL_P(lv)) level = NUM2INT(lv);
if (level == 0) return ary;
if (level == 0) return Qnil;
result = flatten(ary, level, &mod);
if (mod == 0) return Qnil;