Text.Show.Unicode

Provides a interactive printer for printing Unicode characters in ghci REPL. Our design goal is that uprint produces String representations that are valid Haskell String literals and uses as many Unicode printable characters as possible. Hence

read . ushow == id

see the tests of this package for detailed specifications.

Example

With print :

$ ghci
...
> ["哈斯克尔7.6.1"]
["\21704\26031\20811\23572\&7.6.1"]
>

With uprint :

$ ghci -interactive-print=Text.Show.Unicode.uprint Text.Show.Unicode
...
Ok, modules loaded: Text.Show.Unicode.
> ("Хорошо!",["哈斯克尔7.6.1的力量","感じる"])
("Хорошо!",["哈斯克尔7.6.1的力量","感じる"])
> "改\n行"
"改\n行"

You can make uprint the default interactive printer in several ways. One is to cabal install unicode-show, and add the following lines to your ~/.ghci config file.

import qualified Text.Show.Unicode
:set -interactive-print=Text.Show.Unicode.uprint

Documentation

ushow :: Show a => a -> String

Show the input, and then replace Haskell character literals with the character it represents, for any Unicode printable characters except backslash, single and double quotation marks. If something fails, fallback to standard show.

uprint :: Show a => a -> IO ()

A version of print that uses ushow.

ushowWith :: Show a => (Char -> Bool) -> a -> String

Show the input, and then replace character literals with the character itself, for characters that satisfy the given predicate.

uprintWith :: Show a => (Char -> Bool) -> a -> IO ()

A version of print that uses ushowWith.