bash.d/00-completion-cache

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# shellcheck shell=bash
# Cache completion scripts to avoid subprocess overhead on every shell start.
#
# Usage: cached_completion <tool> <generation-command...>
# Example: cached_completion gh gh completion -s bash
#
# The cache file is regenerated when the tool binary is newer than the cache.
# Cache location: ${XDG_CACHE_HOME:-$HOME/.cache}/bash.d/
_COMP_CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/bash.d"
cached_completion() {
local tool="$1"; shift
local cache_file="${_COMP_CACHE}/${tool}.bash"
local tool_path
tool_path="$(command -v "$tool" 2>/dev/null)" || return
if [[ ! -f "$cache_file" || "$tool_path" -nt "$cache_file" ]]; then
mkdir -p "$_COMP_CACHE"
"$@" > "$cache_file" 2>/dev/null || return
fi
# shellcheck disable=SC1090
. "$cache_file"
}