FCEDIT/EDITOR ignored in vi command editor mode

[AleksejK1]

Describe the bug
I have FCEDIT and EDITOR set to "nvim", but when I press 'v' in vi editing command mode, it opens vi editor.

To Reproduce
Steps to reproduce the behavior:

set -o vi
export FCEDIT=nvim
export EDITOR=nvim
date
fc <get command editing in Nvim>
date <Press Esc and v, get dropped to Vi, not Nvim>

Expected behavior
Open nvim as command editor.

Environment (please complete the following information):

• OS: Arch
• Version 2.59
• Locale en_GB.UTF-8
• If you built yash yourself, also show your configuration parameters.

  ./configure \
    --prefix=/usr \
    --enable-array \
    --enable-dirstack \
    --enable-double-bracket \
    --enable-help \
    --enable-history \
    --enable-lineedit \
    --enable-nls \
    --enable-printf \
    --enable-socket \
    --enable-test \
    --enable-ulimit

[magicant]

In the current implementation, the editor is hard-coded as vi. It might be useful to honor the VISUAL or EDITOR variable if defined.

Meanwhile, you can define an alias so that nvim is used as vi: alias vi=nvim.