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Fix Range#include? of an empty range of single characters #9846

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Fix Range#include? of an empty range of single characters #9846

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2 changes: 1 addition & 1 deletion core/src/main/java/org/jruby/RubyString.java
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Original file line number Diff line number Diff line change
Expand Up @@ -7191,7 +7191,7 @@ public static IRubyObject includeRange(ThreadContext context, RubyString _beg, R
(e = eByteList.get(0)) < 128 &&
(v = vByteList.get(0)) < 128) {
if (b <= v && v < e) return context.tru;
if (!exclusive && v == e) return context.tru;
if (!exclusive && b <= v && v == e) return context.tru;
return context.fals;
}
}
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5 changes: 5 additions & 0 deletions test/mri/ruby/test_range.rb
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Expand Up @@ -1034,6 +1034,11 @@ def test_include
assert_include("a"..."z", "y")
assert_not_include("a"..."z", "z")
assert_not_include("a".."z", "cc")
assert_not_include("z".."a", "a")
assert_not_include("z".."a", "z")
assert_not_include("z".."a", "m")
assert_include("a".."a", "a")
assert_not_include("a"..."a", "a")
assert_raise(TypeError) {("a"..).include?("c")}
assert_raise(TypeError) {("a"..).include?("5")}

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