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prezto/plugins/perl/functions/psub

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# Perl Substitution
local usage pattern replacement modifiers
usage="$(
cat <<EOF
usage: $0 [-option ...] [--] pattern replacement [file ...]
options:
-g match globally
-i ignore case
-m ^ and $ match the start and the end of a line
-s . matches newline
-x ignore whitespace and comments
EOF
)"
while getopts ':igmxe::' opt; do
case "$opt" in
(i) modifiers="${modifiers}i" ;;
(g) modifiers="${modifiers}g" ;;
(m) modifiers="${modifiers}m" ;;
(x) modifiers="${modifiers}x" ;;
(e) modifiers="${modifiers}e" ;;
(:)
print "$0: option requires an argument: $OPTARG" >&2
print "$usage" >&2
return 1
;;
([?])
print "$0: unknown option: $OPTARG" >&2
print "$usage" >&2
return 1
;;
esac
done
shift $(( $OPTIND - 1 ))
if (( $# < 2 )); then
print "$usage" >&2
return 1
fi
pattern="$1"
replacement="$2"
repeat 2 shift
perl -i'.orig' -n -l -e "s/${pattern//\//\\/}/${replacement//\//\\/}/${modifiers}; print" "$@"