bring to compliance: ssh.completion

Author: seefood

completion/available/ssh.completion.bash

@@ -1,10 +1,10 @@
-#!/usr/bin/env bash
+# shellcheck shell=bash
 # Bash completion support for ssh.
 
 export COMP_WORDBREAKS=${COMP_WORDBREAKS/\:/}
 
 _sshcomplete() {
-	local CURRENT_PROMPT="${COMP_WORDS[COMP_CWORD]}"
+	local line CURRENT_PROMPT="${COMP_WORDS[COMP_CWORD]}"
 	if [[ ${CURRENT_PROMPT} == *@* ]]; then
 		local OPTIONS="-P ${CURRENT_PROMPT/@*/}@ -- ${CURRENT_PROMPT/*@/}"
 	else
@@ -17,20 +17,21 @@ _sshcomplete() {
 			| awk '{for (i=2; i<=NF; i++) print $i}' \
 			| sed -Ee "s|^([^/~])|$HOME/.ssh/\1|" -e "s|^~/|$HOME/|"); do
 		if [ -r "$fl" ]; then
-			COMPREPLY=(${COMPREPLY[@]} $(compgen -W "$(grep -i ^Host "$fl" | grep -v '[*!]' | awk '{for (i=2; i<=NF; i++) print $i}')" ${OPTIONS}))
+			#shellcheck disable=SC2086
+			while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$(grep -i ^Host "$fl" | grep -v '[*!]' | awk '{for (i=2; i<=NF; i++) print $i}')" ${OPTIONS})
 		fi
 	done
 
 	# parse all hosts found in .ssh/known_hosts
-	if [ -r "$HOME/.ssh/known_hosts" ]; then
-		if grep -v -q -e '^ ssh-rsa' "$HOME/.ssh/known_hosts"; then
-			COMPREPLY=(${COMPREPLY[@]} $(compgen -W "$(awk '{print $1}' "$HOME/.ssh/known_hosts" | grep -v ^\| | cut -d, -f 1 | sed -e 's/\[//g' | sed -e 's/\]//g' | cut -d: -f1 | grep -v ssh-rsa)" ${OPTIONS}))
-		fi
+	if [ -r "$HOME/.ssh/known_hosts" ] && grep -v -q -e '^ ssh-rsa' "$HOME/.ssh/known_hosts"; then
+		#shellcheck disable=SC2086
+		while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$(awk '{print $1}' "$HOME/.ssh/known_hosts" | grep -v ^\| | cut -d, -f 1 | sed -e 's/\[//g' | sed -e 's/\]//g' | cut -d: -f1 | grep -v ssh-rsa)" ${OPTIONS})
 	fi
 
 	# parse hosts defined in /etc/hosts
 	if [ -r /etc/hosts ]; then
-		COMPREPLY=(${COMPREPLY[@]} $(compgen -W "$(grep -v '^[[:space:]]*$' /etc/hosts | grep -v '^#' | awk '{for (i=2; i<=NF; i++) print $i}')" ${OPTIONS}))
+		#shellcheck disable=SC2086
+		while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$(grep -v '^[[:space:]]*$' /etc/hosts | grep -v '^#' | awk '{for (i=2; i<=NF; i++) print $i}')" ${OPTIONS})
 	fi
 
 	return 0