10 lines
223 B
Bash
10 lines
223 B
Bash
# -*- mode: sh; -*-
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if [[ ! "${(P)${1}}" =~ (^|:)"$2"(:|$) ]]; then
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if [ -n "$3" ]; then
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# Append
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typeset -g $1="${(P)${1}}:$2"
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else
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# Prepend
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typeset -g $1="$2:${(P)${1}}"
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fi
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fi
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