I've tried Nim programs in Windows 10 console and found unicode support to have
some serious issues.
I've used Nim v1.0.6 with either MinGW-W64 v4.3.0 or MinGW-W64 v8.1.0 as the
backend.
Before running a Nim program, **chcp** returns **" Active code page: 737"**
(that is **" OEM Greek"**).
After running a Nim program, **chcp** returns **" Active code page: 65001"**
(that is **" UTF-8"**).
So we know for sure that a Nim program successfully sets the code page to **"
UTF-8"**.
Now take the following short code as en example:
import strutils
import unicode
let s = stdin.readLine
echo s
for cp in s.utf8:
echo cp.toHex, ' ', if cp == "\e": "ESC" else: cp
Run
With Latin character input, the code works as expected:
**Input:**
test
Run
**Output:**
test
74 t
65 e
73 s
74 t
Run
With Greek character input, the code produces some interesting results:
**Input:**
τεστ
Run
**Output:**
00
00
00
00
Run
If **SetConsoleCP()** and **SetConsoleOutputCP()** are used to set the code
page to **" 737"**, the code works somehow, even though the **utf8()** iterator
does not really return UTF-8 code points:
**Input:**
τεστ
Run
**Output:**
τεστ
AB τ
9C ε
A9 σ
AB τ
Run
On Linux the code works as expected.
What are your suggestions?
