From c4b19f7fc4707321801973b259387c4e59de90cd Mon Sep 17 00:00:00 2001
From: Peter Palfrader <peter@palfrader.org>
Date: Wed, 22 Sep 2021 10:25:08 +0200
Subject: 49431 (tweaked, c.f. Bart: 49434): Faster ~/.ssh/config processing

When iterating over the ssh config file, iterate over the array linearly
instead of always processing the first and then removing it from the
list.  This speeds up processing significantly.
---
 Completion/Unix/Type/_ssh_hosts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'Completion/Unix/Type')

diff --git a/Completion/Unix/Type/_ssh_hosts b/Completion/Unix/Type/_ssh_hosts
index bd5366425..a4a08ad91 100644
--- a/Completion/Unix/Type/_ssh_hosts
+++ b/Completion/Unix/Type/_ssh_hosts
@@ -20,8 +20,9 @@ if [[ -r $config ]]; then
   local key line host
   local -a lines=("${(@f)$(<"$config")}") 2>/dev/null
   local -a match_args
-  while (($#lines)); do
-    IFS=$'=\t ' read -r key line <<<"${lines[1]}"
+  local idx=1
+  while (( idx <= $#lines )); do
+    IFS=$'=\t ' read -r key line <<<"${lines[idx]}"
     if [[ "$key" == ((#i)match) ]]; then
       match_args=(${(z)line})
       while [[ $#match_args -ge 2 ]]; do
@@ -35,7 +36,7 @@ if [[ -r $config ]]; then
     fi
     case "$key" in
     ((#i)include)
-      lines[1]=("${(@f)$(cd $HOME/.ssh; cat ${(z)~line})}") 2>/dev/null;;
+      lines[idx]=("${(@f)$(cd $HOME/.ssh; cat ${(z)~line})}") 2>/dev/null;;
     ((#i)host(|name))
       for host in ${(z)line}; do
 	case $host in
@@ -43,7 +44,7 @@ if [[ -r $config ]]; then
 	(*) config_hosts+=("$host") ;;
 	esac
       done ;&
-    (*) shift lines;;
+    (*) (( ++idx ));;
     esac
   done
   if (( ${#config_hosts} )); then
-- 
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