Fix zsh ssh-agent stuff

zsh/customizations/zsh_aliases.zsh

@@ -13,11 +13,14 @@ export PAGER='less --mouse'
 export BROWSER='firefox -P Mari --class Firefox.Main'
 # Set up the vim config path
 export VIM_CONFIG_DIR=$__COMMON_CONFIGS/vim
-# Set the SSH auth sock to the central location
-if [[ -n $SSH_AUTH_SOCK ]] && [[ $SSH_AUTH_SOCK != $HOME/.ssh/ssh_auth_sock ]]; then
+# Run an SSH agent if one doesn't already exist and link the (new or existing) SSH auth socket to the central location
+if [[ ! -S $HOME/.ssh/ssh_auth_sock ]] && [[ ! -S $SSH_AUTH_SOCK ]] ; then
+  eval $(ssh-agent -s | head -n1)
+fi
+if [[ -S $SSH_AUTH_SOCK ]] && [[ $SSH_AUTH_SOCK != $HOME/.ssh/ssh_auth_sock ]]; then
   ln -sf "$SSH_AUTH_SOCK" "$HOME/.ssh/ssh_auth_sock"
 fi
-export SSH_AUTH_SOCK="$HOME/.ssh/ssh_auth_sock"
+SSH_AUTH_SOCK="$HOME/.ssh/ssh_auth_sock"; export SSH_AUTH_SOCK
 
 # Set potentially-destructive commands to use interactive modes
 alias rm='rm -i'
@@ -40,14 +43,14 @@ function __common_configs_in_sync() {
     # Failure modes, in order:
     #   exit 9: Problem cd'ing or getting commit hashes - things that should never fail
     cd $__COMMON_CONFIGS || exit 9
-    localCommit=$(git show-ref --verify --hash refs/heads/master) || exit 9
+    localCommit=$(git show-ref --verify --hash refs/heads/main) || exit 9
     if [[ $1 == --force-fetch ]] || [[ ! -f .last-fetch ]] || [[ $(date --reference=.last-fetch +%s) -lt $(date --date='5 minutes ago' +%s) ]]; then
       git fetch --quiet origin && touch .last-fetch
     fi
-    remoteCommit=$(git show-ref --verify --hash refs/remotes/origin/master) || exit 9
-    #   exit 1: master is not the commit which is checked out.
-    [[ $(git symbolic-ref HEAD) == "refs/heads/master" ]] || exit 1
-    #   exit 2: master and origin/master are different.
+    remoteCommit=$(git show-ref --verify --hash refs/remotes/origin/main) || exit 9
+    #   exit 1: main is not the commit which is checked out.
+    [[ $(git symbolic-ref HEAD) == "refs/heads/main" ]] || exit 1
+    #   exit 2: main and origin/main are different.
     [[ $localCommit == $remoteCommit ]] || exit 2
     #   exit 3: There are staged changes.
     git diff-index --cached --exit-code --quiet HEAD || exit 3