# Encoding.default\_external and -r option

**URL:** <https://www.ruby-forum.com/t/encoding-default-external-and-r-option/129271>\
**Category:** Development\
**Created:** [February 15, 2008, 11:19pm UTC](https://www.ruby-forum.com/t/encoding-default-external-and-r-option/129271 "2008-02-15T23:19:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Masaki\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/58956e/32.png) [@Masaki\_S](https://www.ruby-forum.com/u/Masaki_S)\
**Post date:** [February 15, 2008, 11:19pm UTC](https://www.ruby-forum.com/t/encoding-default-external-and-r-option/129271/1 "2008-02-15T23:19:28Z")

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e$B=uED$G$9!#e(B

e$B\<!$N7k2L$ON\>J}$H$be(BUTF-8e$B$K$J$C$F$[$7$$$G$9!#e(B

$ ruby -v  
ruby 1.9.0 (2008-02-16 revision 15495) [i686-linux]  
$ cat encd.rb  
puts Encoding.default\_external  
$ ruby -Eutf-8 -r./encd.rb -e ‘’  
ASCII-8BIT # UTF-8e$B$K$J$i$J$$!#e(B  
$ ruby -Eutf-8 encd.rb  
UTF-8

e$B=uEDe(B e$B2m5\*e(B

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<div class="post-metadata">

**Author:** ![Masaki\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/58956e/32.png) [@Masaki\_S](https://www.ruby-forum.com/u/Masaki_S)\
**Post date:** [February 16, 2008, 12:23am UTC](https://www.ruby-forum.com/t/encoding-default-external-and-r-option/129271/2 "2008-02-16T00:23:34Z")

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e$B@.@%$G$9!#e(B

Masaki S. wrote:

> $ ruby -Eutf-8 encd.rb  
> UTF-8

e$B$"!\<!"$J$k$[$I!"e(Bdefault\_internal e$B$r%;%C%H$9$kA0$Ke(B library  
e$B$re(B require e$B$7e(B  
e$B$A$c$C$F$k$s$G$9$M!#e(Br15496 e$B$GD\>$7$^$7$?!#e(B

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<div class="post-metadata">

**Author:** ![Masaki\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/58956e/32.png) [@Masaki\_S](https://www.ruby-forum.com/u/Masaki_S)\
**Post date:** [February 16, 2008, 2:15am UTC](https://www.ruby-forum.com/t/encoding-default-external-and-r-option/129271/3 "2008-02-16T02:15:02Z")

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e$B=uED$G$9!#e(B

NARUSE, Yui wrote:

> e$B$"!\<!"$J$k$[$I!"e(Bdefault\_internal e$B$r%;%C%H$9$kA0$Ke(B library e$B$re(B require e$B$7e(B  
> e$B$A$c$C$F$k$s$G$9$M!#e(Br15496 e$B$GD\>$7$^$7$?!#e(B

e$BAGAa$$$G$9$M!#$"$j$,$H$&$4$6$$$^$7$?!#e(B

e$B=uEDe(B e$B2m5\*e(B