Encoding::Undefinedconversionerror: "\Xc2" from Ascii-8Bit to Utf-8

Encoding::UndefinedConversionError: \xC2 from ASCII-8BIT to UTF-8

Your string is in some other encoding, most likely iso-8859-1, so you should run this to convert it:

"\xC2".encode("iso-8859-1").force_encoding("utf-8")
=> "Ã"

See this question for more information related to this issue.

Encoding::UndefinedConversionError \xC2 from ASCII-8BIT to UTF-8 with redcarpet

in the end I solved this with adding force_encoding("UFT-8") to the html

like this:

      f.write html.force_encoding("UTF-8")

it fixed it.

`write': \xCF from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError) while writing to file from url

Use force_encoding:

open(uri) {|url_file| tempfile.write(url_file.read.force_encoding("UTF-8"))

\xC2 to UTF-8 in conversion from ASCII-8BIT to UTF-8

It turns out the page had an invalid character (an interpunct '·'), which I found out with the following code (credits to this gist and this question):

lines = IO.readlines("app/views/layouts/application.html.haml").map do |line|
  line.force_encoding('ASCII-8BIT').encode('UTF-8', :invalid => :replace, :undef => :replace, :replace => '?')
end

File.open("app/views/layouts/application.html.haml", "w") do |file|
  file.puts(lines)
end

After running this code, I could find the problematic characters with a simple git diff and moved the code to a helper file with # encoding: utf-8 at the top.
I'm not sure why this doesn't fail with MRI but it should since I'm not specifying the encoding of the haml file.

Encoding::UndefinedConversionError: \x96 from ASCII-8BIT to UTF-8 error while writing to a file in ruby

Well, I will try to suggest.

It sounds like you have received this file from a workstation, running Windows. It looks like this file’s original name is

Volunteer Log – in Page.docx

That said, is was stored using Encoding::CP1252. OK, you are to handle CP1252 in a proper way:

file = File.open 'names', 'w'
file.puts filename.force_encoding(Encoding::CP1252).encode(Encoding::UTF_8)

Hope it helps.

ruby `encode': \xC3 from ASCII-8BIT to UTF-8 (Encoding::UndefinedConversionError)

It seems you should use another encoding for the object. You should set the proper codepage to the variable @tree, for instance, using iso-8859-1 instead of ascii-8bit by using @tree.force_encoding('ISO-8859-1'). Because ASCII-8BIT is used just for binary files.

To find the current external encoding for ruby, issue:

Encoding.default_external

If sudo solves the problem, the problem was in default codepage (encoding), so to resolve it you have to set the proper default codepage (encoding), by either:

1. In ruby to change encoding to utf-8 or another proper one, do as follows:

   Encoding.default_external = Encoding::UTF_8
   

2. In bash, grep current valid set up:

   $ sudo env|grep UTF-8
   LC_ALL=ru_RU.UTF-8
   LANG=ru_RU.UTF-8
   

   Then set them in .bashrc properly, in a similar way, but not exactly with ru_RU language, such as the following:

   export LC_ALL=ru_RU.UTF-8
   export LANG=ru_RU.UTF-8
   

Encoding::UndefinedConversionError (\xE2 from ASCII-8BIT to UTF-8): with Rails 4.1 & mysql BLOB datatype

FYI .. it is resolved i changed Data type from BLOB to TEXT and it worked.

BLOB values are treated as binary strings (byte strings). They have no
character set, and sorting and comparison are based on the numeric
values of the bytes in column values. TEXT values are treated as
nonbinary strings (character strings). They have a character set, and
values are sorted and compared based on the collation of the character
set.

The BLOB and TEXT Types

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