如何在ZSH中禁用内置git补全，仅使用gitfast插件？

问题核心是ZSH内置的_git补全函数优先级高于gitfast插件提供的版本，导致即使启用gitfast，仍会调用系统自带的慢补全。以下是无需手动重命名系统文件的解决方法：

方法1：调整补全路径优先级 #

将gitfast插件的补全目录放到ZSH的fpath最前端，确保ZSH优先加载gitfast的_git函数：

# 在antidote加载前添加到.zshrc或.zplugins文件开头
GITFAST_COMP_DIR="$HOME/.antidote/https-COLON--SLASH--SLASH-github.com-SLASH-ohmyzsh-SLASH-ohmyzsh/plugins/gitfast"
fpath=($GITFAST_COMP_DIR $fpath)

# 加载gitfast后强制绑定补全
compdef _git git

方法2：直接移除系统内置补全 #

通过unset函数或从fpath中删除系统补全目录，彻底禁用内置Git补全：

# 方法A：卸载系统内置_git函数
unfunction _git 2>/dev/null

# 方法B：从fpath中移除系统补全目录
SYSTEM_GIT_COMP_DIR="/usr/share/zsh/5.9/functions/Completion/Unix"
fpath=(${fpath[@]/$SYSTEM_GIT_COMP_DIR})

将上述代码添加到antidote插件加载前的配置中即可。

方法3：调整插件加载顺序 #

把gitfast插件移到所有补全相关插件的最前面，确保它的补全函数最先被加载：

# Plugins for Antidote
romkatv/zsh-defer

# 优先加载gitfast，确保补全优先级最高
ohmyzsh/ohmyzsh path:plugins/gitfast

# OMZ Plugins.
ohmyzsh/ohmyzsh path:plugins/vi-mode
ohmyzsh/ohmyzsh path:plugins/gcloud
ohmyzsh/ohmyzsh path:plugins/colored-man-pages
ohmyzsh/ohmyzsh path:plugins/command-not-found

z-shell/zsh-navigation-tools

# Prompt Plugin.
romkatv/powerlevel10k

# Completion Plugins.
zsh-users/zsh-completions
sorin-ionescu/prezto path:modules/completion

# These popular core plugins should be loaded at the end
zsh-users/zsh-autosuggestions kind:defer
zsh-users/zsh-syntax-highlighting kind:defer
# zdharma-continuum/fast-syntax-highlighting kind:defer
zsh-users/zsh-history-substring-search kind:defer

验证是否生效 #

重启ZSH后执行以下命令，若输出为gitfast插件目录下的_git文件路径，则说明配置成功：

which _git

内容的提问来源于stack exchange，提问作者Gabriel