# \[Feature #1866\] redefinable not (!) operators for 1.8

**URL:** <https://www.ruby-forum.com/t/feature-1866-redefinable-not-operators-for-1-8/173113>\
**Category:** Development\
**Created:** [August 3, 2009, 8:47am UTC](https://www.ruby-forum.com/t/feature-1866-redefinable-not-operators-for-1-8/173113 "2009-08-03T08:47:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Shyouhei\_U](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/94ad74/32.png) [@Shyouhei\_U](https://www.ruby-forum.com/u/Shyouhei_U)\
**Post date:** [August 3, 2009, 8:47am UTC](https://www.ruby-forum.com/t/feature-1866-redefinable-not-operators-for-1-8/173113/1 "2009-08-03T08:47:51Z")

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Feature #1866: redefinable not (!) operators for 1.8  
[http://redmine.ruby-lang.org/issues/show/1866](http://redmine.ruby-lang.org/issues/show/1866)

e$B5/I\<\<Te(B: Shyouhei U.  
e$B%9%F!\<%?%9e(B: Assigned, e$BM%@hEYe(B: Low  
e$BC4Ev\<Te(B: Akinori MUSHA, e$B%+%F%4%je(B: core, Target version: Ruby  
1.8.8

1.8e$B$G$be(B!e$B$r:FDj5A2DG=$K$9$k$H$$$&$N$O$I$&$G$7$g$&$+!#e(B  
e$B=c?h$J3HD%$J$N$G!"8eJ}8\_49$OLdBj$J$$$s$8$c$J$$$+$H;W$C$F$$$^$9!#e(Btest-alle$B$ODL$C$F$$$=$&$G$9!#e(B

e$B\<BAu$re(B(redminee$B$Ke(B)e$BE:IU$7$^$9!#e(B

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<div class="post-metadata">

**Author:** ![Shyouhei\_U](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/94ad74/32.png) [@Shyouhei\_U](https://www.ruby-forum.com/u/Shyouhei_U)\
**Post date:** [August 20, 2009, 11:28am UTC](https://www.ruby-forum.com/t/feature-1866-redefinable-not-operators-for-1-8/173113/2 "2009-08-20T11:28:32Z")

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e$B%A%1%C%He(B #1866 e$B$,99?7$5$l$^$7$?!#e(B (by Akinori MUSHA)

e$B7|G0E@$O@-G=Dc2\<$/$i$$$G$7$g$&$+!#7ZHy$G$9$+$M!)e(B

## e$B$"$H!"e(BNODE\_NOTe$B$OGQ;\_$G$-$^$9$+!)e(B

[http://redmine.ruby-lang.org/issues/show/1866](http://redmine.ruby-lang.org/issues/show/1866)

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<div class="post-metadata">

**Author:** ![Shyouhei\_U](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/94ad74/32.png) [@Shyouhei\_U](https://www.ruby-forum.com/u/Shyouhei_U)\
**Post date:** [August 20, 2009, 3:20pm UTC](https://www.ruby-forum.com/t/feature-1866-redefinable-not-operators-for-1-8/173113/3 "2009-08-20T15:20:55Z")

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e$B%A%1%C%He(B #1866 e$B$,99?7$5$l$^$7$?!#e(B (by Shyouhei U.)

e$B@-G=Dc2\<$O7ZHy$J$N$G$O$J$$$+$H$\*$b$$$^$9$,!"$9$$$^$;$s!"L$I\>2A$G$9!#e(B

## NODE\_NOTe$B$OGQ;\_$7$h$&$H;W$($P$G$-$k5$$,$7$^$9$,!“e(B1.8e$B$N4V$O%P%$%J%j8\_49@-$N$?$a$K$”$($F;D$7$F$\*$$$?$[$&$,$h$/$J$$$G$7$g$&$+!#e(B

[http://redmine.ruby-lang.org/issues/show/1866](http://redmine.ruby-lang.org/issues/show/1866)