Repeating source zsh-syntax-highlighting.zsh becomes slow

[jrowlingson]

👋 cool project! I've noticed that when re-sourcing zsh-syntax-highlighting.zsh the prompt will take longer each time to initialize. I happened to notice this as I was iterating on my config and repeatedly reloading .zshrc.

To reproduce:

I have the following alias that I use to reload my config:

alias rl='RELOAD=1 source ~/.zshrc'

This alias will become progressively slower when the following is added to my .zshrc:

source /path_to_repo/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh

System info:

zsh-syntax-highlighting#b2c910a

$ zsh --version
zsh 5.8 (x86_64-ubuntu-linux-gnu)

[danielshahaf]

👋 cool project! I've noticed that when re-sourcing `zsh-syntax-highlighting.zsh` the prompt will take longer each time to initialize. I happened to notice this as I was iterating on my config and repeatedly reloading `.zshrc`. To reproduce: I have the following alias that I use to reload my config: ```zsh alias rl='RELOAD=1 source ~/.zshrc' ``` This command will become progressively slower when the following is added to my .zshrc: ```zsh source /path_to_repo/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh ```

If you source z-sy-h.zsh twice, syntax highlighting will be computed twice. That's by design.