[vi-mode] bug: incorrect b behavior

[johnpyp]

Fish: version 3.7.1-1593-g5b324f8ec
OS: Arch Linux
Term: Kitty

Yes, this does happen without third-party customizations.

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b is misbehaving, at least with regards to slashes (where I noticed it). Example:

content:

cd /usr/bin/zsh[CURSOR]
# in normal mode, press b
cd /usr/bin/[z]sh # (correct)
# press b again
cd /usr/[b]in/zsh # (incorrect)

Compare this to real vim or neovim;

cd /usr/bin/zsh[CURSOR]
# in normal mode, press b
cd /usr/bin/[z]sh # (correct)
# press b again
cd /usr/bin[/]zsh
# press b again
cd /usr/[b]in/zsh

More clearly, just enter vi mode, press b from the end of the line and compare to vim to see the difference.

Zsh vi mode seems to handle this case fine.