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#!/bin/ash
# Match $1 against perl regex $2, case insensitive
regex_imatch() {
printf "%s" "$1" | grep -qPi "$2"
}
# Escapes $1 for use in grep -E/-P, sed -r, etc.
# Pass --slash to escape '/' too. (e.g. for sed)
regex_escape() {
if [ "x$1" = "x--slash" ]; then
printf "%s" "$2" | sed 's,[][()\.^$?*+/],\\&,g'
else
printf "%s" "$1" | sed 's/[][()\.^$?*+]/\\&/g'
fi
}
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