Ruby sometimes prints unicode-escaped chars instead of the chars themselves. Why?

Question

I use ruby 2.2.3p173, and Sublime 3. All my string already on encode('utf-8'). In Linux I have, what I expect. Try make output:

a = [ "Привет" ]
puts "puts=#{a}"
p "p=#{a}"
print "print=#{a}\n"

puts a[ 0 ]
p a[ 0 ]
print a[ 0 ] + "\n"
p a[ 0 ].encoding
p __ENCODING__

Output is:

puts=["\u041F\u0440\u0438\u0432\u0435\u0442"]
"p=[\"\\u041F\\u0440\\u0438\\u0432\\u0435\\u0442\"]"
print=["\u041F\u0440\u0438\u0432\u0435\u0442"]
Привет
"\u041F\u0440\u0438\u0432\u0435\u0442"
Привет
#<Encoding:UTF-8>
#<Encoding:UTF-8>

I expect:

puts=["Привет"]
"p=[\"Привет\"]"
print=["Привет"]
Привет
"Привет"
Привет

How I can print Array with several "utf-8" string in one line?

Where do you run this? Prints ok for me in textmate: http://pastie.org/10650925. Must be a problem with sublime. — Sergio Tulentsev, Dec 24 '15 at 14:15
Possible duplicate of [Ruby Output Unicode Character](http://stackoverflow.com/questions/18492664/ruby-output-unicode-character) — scrappedcola, Dec 24 '15 at 14:15
Does this question have anything to do with printing on one line? — sawa, Dec 24 '15 at 14:17
Try running in irb or from ruby file in console, not from sublime. — Sergio Tulentsev, Dec 24 '15 at 14:23
I cannot reproduce this. Do you have your console configured correctly? This seems to be either a misconfiguration or a bug in Sublime's console. In the first case, the question belongs on SuperUser, in the second case, in Sublime's bug tracker. — Jörg W Mittag, Dec 24 '15 at 16:56

Wand Maker · Accepted Answer · 2015-12-24T17:34:01.647

3

This is particularly observed on Windows. On other *nix systems, it may work alright - For instance, on https://repl.it/ you see right output, as it is most likely hosted on a *nix system.

As per documentation, Array#to_s is

Alias for: inspect

Array#inspect invokes inspect on each of the array member, in this case, array members are all strings, thus String#inspect will be invoked.

String#inspect uses Encoding#default_external as specified in documentation for inspection results.

The default external encoding is used by default for strings created from the following locations:

CSV

File data read from disk

SDBM

StringIO

Zlib::GzipReader

Zlib::GzipWriter

String#inspect

Regexp#inspect

On Windows, default external encoding is not UTF-8, and hence, we see the escaped sequences in output of String#inspect.

p Encoding::default_external
#=> #<Encoding:IBM437>

We change the default external encoding to UTF-8, output will be proper:

Encoding::default_external = Encoding::UTF_8

a = [ "Привет" ]
puts "puts=#{a}"
#=> puts=["Привет"]

p "p=#{a}"
#=> "p=[\"Привет\"]"

edited Dec 24 '15 at 17:34

answered Dec 24 '15 at 14:47

Wand Maker

17,377
6
43
79

No, it does not explain that. I see his expected output, with both `puts` and `p`. Must be something wrong with his env, not his ruby. – Sergio Tulentsev Dec 24 '15 at 16:15
I see the output what OP is seeing, I use plain .rb file to test and run using `ruby file.rb` – Wand Maker Dec 24 '15 at 16:42
Granted, I tried on osx. But still it's not ruby's fault, I think – Sergio Tulentsev Dec 24 '15 at 17:04
@SergioTulentsev Found the fix for windows – Wand Maker Dec 24 '15 at 17:19

score 0 · Answer 2 · edited May 23 '17 at 12:30

0

Just try with irb console Or rails console .

It should be work.

Note: Kindly check also difference between p and puts

Hope this answer help you !!!

edited May 23 '17 at 12:30

Community

1
1

answered Dec 24 '15 at 16:08

Gupta

5,122
3
27
46

Ruby sometimes prints unicode-escaped chars instead of the chars themselves. Why?

2 Answers2