Arch Linux

Summary and Info:
For example, running `sudo pacman -Su` results in: (Copy to text editors with monospace fonts to see exactly what happened)

```
:: 正在進行全系統更新…
正在解決依賴關係…
正在檢查衝突的軟體包…

軟體包 (2) 舊版本 新版本 淨更動 下載大小

testing/linux 4.17.3-1 4.17.4-1 0.01 MiB 70.38 MiB
testing/linux-headers 4.17.3-1 4.17.4-1 0.00 MiB 8.25 MiB

總計下載大小： 78.63 MiB
總計安裝大小： 157.30 MiB
淨升級大小： 0.01 MiB

:: 進行安裝嗎？ [Y/n] n
```

The term 舊版本 does not align with 4.17.3-1. In comparison, the English version is correctly aligned:
```
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...

Package (2) Old Version New Version Net Change Download Size

testing/linux 4.17.3-1 4.17.4-1 0.01 MiB 70.38 MiB
testing/linux-headers 4.17.3-1 4.17.4-1 0.00 MiB 8.25 MiB

Total Download Size: 78.63 MiB
Total Installed Size: 157.30 MiB
Net Upgrade Size: 0.01 MiB

:: Proceed with installation? [Y/n] n
```

The problem here is that pacman uses printf to align columns, but such an approach does not work well with some non-ASCII characters [1]

[1] https://stackoverflow.com/questions/35427491/the-width-specifier-in-printf-does-not-work-properly-with-accented-characters/35427692

Steps to Reproduce:
1. Enable `VerbosePkgLists` in pacman.conf
2. Downgrade some random packages
3. `sudo pacman -Su`