Work around bug in `zdharma/fast-syntax-highlighting`

[zhou13]

• [x] I have carefully read all of the instructions in this issue template.
• [x] I have carried them out to the letter.

Environment

apple darwin22.0 /bin/zsh zsh zsh-5.9-0-g73d3173print -l $_autocomplete__funcfiletrace
/Users/yichaozhou/.zgen/zgen.zsh:368
/Users/yichaozhou/.zgen/zgen.zsh:492
/Users/yichaozhou/.zshrc:20
5cc9da1

• Operating system: MacOS

• Terminal emulator: Kitty

• [x] I have filled out the fields above.

• [x] I have ran the commands in the code block above.

• [x] I have pasted their output into the same block.

Steps to reproduce

cd $(mktemp -d)
git clone --depth 1 -- https://github.com/marlonrichert/zsh-autocomplete.git
git clone --depth 1 -- https://github.com/zsh-users/zsh-autosuggestions
> .zshrc <<EOF
PS1='%# ' PS2= RPS2='%^'; setopt transientrprompt interactivecomments
source ~/zsh-autocomplete/zsh-autocomplete.plugin.zsh
source ~/zsh-autosuggestions/zsh-autosuggestions.plugin.zsh
EOF
env -i HOME=$PWD PATH=$PATH TERM=$TERM ${TERMINFO:+TERMINFO=$TERMINFO} zsh -d

• type ls /Users/Shared and <enter>

• type ls /User and <right-arrow>

• 

• [x] I have run the code block above to create a test environment.

• [x] I have reproduced my problem in this environment in the most minimal way possible.

• [x] I have copy-pasted my entire test session into the same code block.

[marlonrichert]

Can you checkout the feature branch and try if the problem is solved there?

[zhou13]

It seems that the problem is not in the feature branch.

[zhou13]

However, when using the feature branch, the color from z-shell/F-Sy-H is not applied correctly. But that is probably another problem.

[marlonrichert]

@zhou13 That is definitely a bug in zdharma/fast-syntax-highlighting. It appears that, when there are ZLE hooks in play that are not its own, it forgets to update $region_highlight. zsh-users/zsh-syntax-highlighting doesn't have this problem.