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lib: use grep-alias cache only if ZSH_CACHE_DIR is writable

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Fixes #8693
This commit is contained in:
Marc Cornellà 2020-03-02 12:35:58 +01:00
parent 9ce7de9f16
commit d3dfc13716
1 changed files with 14 additions and 10 deletions
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24
lib/grep.zsh
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@ -2,7 +2,9 @@ __GREP_CACHE_FILE="$ZSH_CACHE_DIR"/grep-alias
# See if there's a cache file modified in the last day
__GREP_ALIAS_CACHES=("$__GREP_CACHE_FILE"(Nm-1))
if [[ -z "$__GREP_ALIAS_CACHES" ]]; then
if [[ -n "$__GREP_ALIAS_CACHES" ]]; then
source "$__GREP_CACHE_FILE"
else
grep-flags-available() {
command grep "$@" "" &>/dev/null <<< ""
}
@ -12,26 +14,28 @@ if [[ -z "$__GREP_ALIAS_CACHES" ]]; then
# Check for --exclude-dir, otherwise check for --exclude. If --exclude
# isn't available, --color won't be either (they were released at the same
# time (v2.5): http://git.savannah.gnu.org/cgit/grep.git/tree/NEWS?id=1236f007
# time (v2.5): https://git.savannah.gnu.org/cgit/grep.git/tree/NEWS?id=1236f007
if grep-flags-available --color=auto --exclude-dir=.cvs; then
GREP_OPTIONS="--color=auto --exclude-dir=$EXC_FOLDERS"
elif grep-flags-available --color=auto --exclude=.cvs; then
GREP_OPTIONS="--color=auto --exclude=$EXC_FOLDERS"
fi
{
if [[ -n "$GREP_OPTIONS" ]]; then
# export grep, egrep and fgrep settings
echo "alias grep='grep $GREP_OPTIONS'"
echo "alias egrep='egrep $GREP_OPTIONS'"
echo "alias fgrep='fgrep $GREP_OPTIONS'"
if [[ -n "$GREP_OPTIONS" ]]; then
# export grep, egrep and fgrep settings
alias grep="grep $GREP_OPTIONS"
alias egrep="egrep $GREP_OPTIONS"
alias fgrep="fgrep $GREP_OPTIONS"
# write to cache file if cache directory is writable
if [[ -w "$ZSH_CACHE_DIR" ]]; then
alias -L grep egrep fgrep >| "$__GREP_CACHE_FILE"
fi
} > "$__GREP_CACHE_FILE"
fi
# Clean up
unset GREP_OPTIONS EXC_FOLDERS
unfunction grep-flags-available
fi
source "$__GREP_CACHE_FILE"
unset __GREP_CACHE_FILE __GREP_ALIAS_CACHES