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rc/sh/v_domap
2021-10-22 18:25:33 +02:00

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#!/usr/bin/env sh
# YES_ZSH
# YES_BASH
# YES_DASH
# YES_ASH
v_domap() {
argc $# -eq 1 "$0" || return
# TODO: sanity-check on characters of the variable name.
local _k_="$1" _v_= _new_= _next_= _i_= _o_=
eval "_v_=\"\$$_k_\""
while [ -n "$_v_" ]; do
_next_="${_v_#[! ]}"
[ "$_next_" != "$_v_" ] || _next_="${_v_# }"
_i_="${_v_%"$_next_"}"; _v_="$_next_"
map
_new_="$_new_$_o_"
#printf 'new: %s\n' "$_new_"
done
eval "$_k_=\"\$_new_\""
}
[ -n "${preload+-}" ] || . ~/sh/preload || exit 2
eval ${preload:-preload} argc
[ -n "${preload+-}" ] || v_domap "$@"