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Merge branch 'grep.zsh-improvements'

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Closes #5085
Closes #7451
Closes #7265
Fixes #8444
Closes #8445
This commit is contained in:
Marc Cornellà 2020-03-01 22:46:24 +01:00
commit 461b2134de
1 changed files with 33 additions and 24 deletions
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57
lib/grep.zsh
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@ -1,28 +1,37 @@
# is x grep argument available? __GREP_CACHE_FILE="$ZSH_CACHE_DIR"/grep-alias
grep-flag-available() {
echo | grep $1 "" >/dev/null 2>&1
}
GREP_OPTIONS="" # See if there's a cache file modified in the last day
__GREP_ALIAS_CACHES=("$__GREP_CACHE_FILE"(Nm-1))
if [[ -z "$__GREP_ALIAS_CACHES" ]]; then
grep-flags-available() {
command grep "$@" "" &>/dev/null <<< ""
}
# color grep results # Ignore these folders (if the necessary grep flags are available)
if grep-flag-available --color=auto; then EXC_FOLDERS="{.bzr,CVS,.git,.hg,.svn,.idea,.tox}"
GREP_OPTIONS+=" --color=auto"
# 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
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 $GREP_OPTIONS'"
fi
} > "$__GREP_CACHE_FILE"
# Clean up
unset GREP_OPTIONS EXC_FOLDERS
unfunction grep-flags-available
fi fi
# ignore VCS folders (if the necessary grep flags are available) source "$__GREP_CACHE_FILE"
VCS_FOLDERS="{.bzr,CVS,.git,.hg,.svn}" unset __GREP_CACHE_FILE __GREP_ALIAS_CACHES
if grep-flag-available --exclude-dir=.cvs; then
GREP_OPTIONS+=" --exclude-dir=$VCS_FOLDERS"
elif grep-flag-available --exclude=.cvs; then
GREP_OPTIONS+=" --exclude=$VCS_FOLDERS"
fi
# export grep settings
alias grep="grep $GREP_OPTIONS"
# clean up
unset GREP_OPTIONS
unset VCS_FOLDERS
unfunction grep-flag-available