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28 lines
745 B
Bash
28 lines
745 B
Bash
# Ignore VCS folders (if the necessary grep flags are available).
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VCS_FOLDERS="{.bzr,.cvs,.git,.hg,.svn}"
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_setup_grep_alias() {
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local GREP_OPTIONS
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# Color grep results.
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GREP_OPTIONS=(--color=auto)
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# Is grep argument $1 available?
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grep-flag-available() {
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echo | grep $1 "" >/dev/null 2>&1
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}
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if grep-flag-available --exclude-dir=.cvs; then
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GREP_OPTIONS+=(--exclude-dir=$VCS_FOLDERS)
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elif grep-flag-available --exclude=.cvs; then
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GREP_OPTIONS+=(--exclude=$VCS_FOLDERS)
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fi
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# Re-define alias.
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alias grep="grep $GREP_OPTIONS"
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# Clean up.
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unfunction grep-flag-available
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# Run it on first invocation.
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command grep $GREP_OPTIONS "$@"
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}
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alias grep=_setup_grep_alias
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