fzf's window has only half of the border in other encoding

[ofseed]

• I have read through the manual page (man fzf)
• I have the latest version of fzf
• I have searched through the existing issues

Info

• OS
  • Linux
  • Mac OS X
  • Windows
  • Etc.
• Shell
  • bash
  • zsh
  • fish

Problem / Steps to reproduce

After Installed fzf, I found it's window has only a half the border like this. The screenshot is taken in nvim-qt, but the problem is same to fzf in console, the preview window also has only half of the border.

The reason might be my console is using GBK encoding. If I turn on the option 'Beta: Using UTF-8 provide global language support' in Windows, the window of fzf would display completely. But many of the programs in Windows is still using GBK encoding, including MSVC and JDK. If I change the encoding setting, they will output garbled characters.
It's very strange. Why half could display but the other half could not?

[junegunn]

#3111 might help which includes fix to gdamore/tcell#578.

This is a binary built from the latest source.

fzf-0.35.1-devel-windows_amd64.zip

[mzr1996]

#3111 might help which includes fix to gdamore/tcell#578.

This is a binary built from the latest source.

fzf-0.35.1-devel-windows_amd64.zip

I notice that fzf 0.35.1 doesn't have this problem, but fzf>=0.36.0 has this problem.
And the issue you mentioned helps. Adding let $RUNEWIDTH_EASTASIAN=0 in my vim config fixed it when fzf>=0.36.0.

[menghuu]

I have the same problem and after add RUNEWIDTH_EASTASIAN=0, it is fixed

the 0.39 version insalled by brew:

the 0.29 version installed by apt

some environment variables are:

> echo $FZF_DEFAULT_COMMAND
fd --hidden --follow --type f --exclude .git

> echo $FZF_DEFAULT_OPTS
--height 40% --layout=reverse --border

> echo $FZF_CTRL_T_COMMAND
fd --hidden --follow --exclude .git

> echo $FZF_ALT_C_COMMAND
fd --hidden --follow --exclude .git --type d

> echo $FZF_CTRL_T_OPTS



> /home/linuxbrew/.linuxbrew/bin/fzf --version
0.39.0 (brew)

> /bin/fzf --version
0.29 (devel)

I read the manpage, and test some case, actually --no-unicode or RUNEWIDTH_EASTASIAN=0(not 1 mentions in manpage) works but why 0.29 version works well, and 0.39 is breaking?

AND, with RUNEWIDTH_EASTASIAN=0 actually work (thanks #2389 (comment))

[junegunn]

@menghuu See 0c5956c.

I'll update the manual page to suggest 0 as well.
Unfortunately, there is no one-size-fits-all solution for this problem. 0.29 worked well for your environment but it didn't in some other environments.