Skewed vertical box lines displayed in Far Manager

[vblazhkun]

Windows Terminal version

1.22.3232.0

Windows build number

10.0.19045.0

Other Software

Far Manager 3.0.6364.0 x64

Steps to reproduce

Open a directory in the left panel of Far Manager with some Russian-named files there.

Expected Behavior

No skewed surrounding boxes displayed anywhere.

An example from conhost.exe:

Actual Behavior

On the rows where the Russian-named files are, the vertical box drawing lines are shifted left. The characters used to draw the given lines are Unicode Box Drawings Double Vertical encoded as U+2551.

Example:

NOTE: I have not seen that issue in the previous versions (e.g. 1.21.3231.0) of the Terminal. It might be related to some new setting introduced in the Preview release, but I am not sure.

[DHowett]

Would you be able to capture a screenshot that covers the entire width of the window where the corruption exists?

[vblazhkun]

The entire screen as requested:

Also I do not see the issue with Midnight Commander running under WSL with the same directory and box drawing characters:

[DHowett]

This is highly unusual. Two files with the same display name?

Is there a chance you have decomposed and composed character versions of the same filename in that folder?

Decomposed (or composed, I guess) characters will have different measurement outcomes on 1.22+.

[vblazhkun]

This is highly unusual. Two files with the same display name?

Is there a chance you have decomposed and composed character versions of the same filename in that folder?

Decomposed (or composed, I guess) characters will have different measurement outcomes on 1.22+.

The filenames are actually different (see the attached hex dump):

1. d0 93 d1 80 d1 83 d0 bf d0 bf d0 be d0 b2 d0 b0 d1 8f 20 d0 bf d0 b5 d1 87 d0 b0 d1 82 d1 8c 20 d0 b2 d1 8b d0 b1 d1 80 d0 b0 d0 bd d0 bd d1 8b d1 85 20 d0 b7 d0 b0 d0 bf d0 b8 d1 81 d0 b5 d0 b8 cc 86 31 20 28 31 29 2e 70 64 66 0a
2. d0 93 d1 80 d1 83 d0 bf d0 bf d0 be d0 b2 d0 b0 d1 8f 20 d0 bf d0 b5 d1 87 d0 b0 d1 82 d1 8c 20 d0 b2 d1 8b d0 b1 d1 80 d0 b0 d0 bd d0 bd d1 8b d1 85 20 d0 b7 d0 b0 d0 bf d0 b8 d1 81 d0 b5 d0 b9 31 20 28 31 29 2e 70 64 66 0a

[vblazhkun]

And the diff:

Looks like the letter й issue. It can be composed as a single character and as a double character (diacritical) as well: и + U+0306.

[o-sdn-o]

• https://habr.com/en/articles/262679/
• And it looks like FarManager is not measuring grapheme clusters correctly.

[vblazhkun]

Another observation: U+0306 somehow eats the space on the right and the space pops-up when I add any character on the left:

[Zeroes1]

@o-sdn-o Far Manager don't support grapheme now (it's may be later)

@vblazhkun Я надеюсь у вас выставлена эта опция в настройках? ( в вашей версии это в разделе Отрисовка)

В настройках Совместимости или Отрисовки
Режим измерения текста должен быть изменён
Кластеры Grapheme -> консоль Windows
в settings.json
за это отвечает строка:
"compatibility.textMeasurement": "console",

пока не появится поддержка графем в FAR'e

@DHowett It's possible force set English lang interface of WT? not get from regional settins from OS?

[DHowett]

@DHowett It's possible force set English lang interface of WT? not get from regional settins from OS?

Yes. It is in the Appearance page if you are using the MSIX version.

[Zeroes1]

@DHowett need close ticket? It's only Far Manager issue. There is a current solution to the problem.