Menus and histogram characters not rendering correctly in Ghostty terminal app

[atticusmatticus]

Small description
Similar to #2144, in the terminal app Ghostty. Histogram characters and menus are not displaying correctly. I believe this has to do with ghostty using their own terminal env $TERM=xterm-ghostty because export TERM=xterm-256color fixes this issue for the session.

Is there a way to fix this issue without needing to change the TERM environment variable?

Data to reproduce

I used the tutorial dataset for VisiData. It isn't dataset specific.

Steps to reproduce

Just run VisiData on Ghostty on the tutorial dataset and open a menu or make a histogram.

Expected result

Actual result with screenshot

Configuration

• Does this issue reproduce without any plugins or configuration (using the -N CLI flag)?
  I have a fresh install with no configuration or plugins.

• Does this issue reproduce with either the latest release, or with the develop branch?
  v3.3

Additional context

• What platform and version are you using (Linux, MacOS, Windows)?
  macOS

• Which version of Python?
  Python 3.14.3

• Which terminal are you using (for display and input issues)?
  Ghostty: https://ghostty.org

[atticusmatticus]

NB: for anyone experiencing this issue, a simple workaround is the following alias:

alias vd='TERM=xterm-256color vd'