STRLCPY/nssh

Add check if there is no any Host directive or empty config file

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nssh

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4	4
5	5		HOST_LIST=()
6	6		while read -r line; do
7		-	HOST_LIST+=($line "")
	7	+	if [[ -n "$line" ]] && [[ "$line" != "Host " ]]; then
	8	+	HOST_LIST+=($line "")
	9	+	fi
8	10		done <<< $(grep -Poh "(?<=^Host\s)[\w._-]*$" ~/.ssh/config)
	11	+
	12	+	if [ ${#HOST_LIST[@]} -eq 0 ]; then
	13	+	echo "Error: No SSH hosts found in configuration file"
	14	+	exit 1
	15	+	fi
9	16
10	17		HEIGHT=20
11	18		WIDTH=60
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