From 03d9514071e6079a541a10f84c3f4bda48a74e52 Mon Sep 17 00:00:00 2001
From: Gregory Pakosz <gregory.pakosz@gmail.com>
Date: Wed, 25 Sep 2019 23:40:50 +0200
Subject: [PATCH] optimized _username() and _hostname() by removing some calls
 to external programs

---
 .tmux.conf | 46 ++++++++++++++++++++++++----------------------
 1 file changed, 24 insertions(+), 22 deletions(-)

diff --git a/.tmux.conf b/.tmux.conf
index e89d9e8..4b9d855 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -563,12 +563,13 @@ run -b '[ -z "#{window_active}" ] && [ -z "#{version}" ] && tmux set display-tim
 #   ssh_or_mosh_args=$(_ssh_or_mosh_args "$tty_info")
 #   if [ -n "$ssh_or_mosh_args" ]; then
 #     # shellcheck disable=SC2086
-#     username=$(ssh -G $ssh_or_mosh_args 2>/dev/null | awk 'NR > 2 { exit } ; /^user / { print $2 }')
+#     username=$(ssh -G $ssh_or_mosh_args 2>/dev/null | awk '/^user / { print $2; exit }')
 #     # shellcheck disable=SC2086
 #     [ -z "$username" ] && username=$(ssh -T -o ControlPath=none -o ProxyCommand="sh -c 'echo %%username%% %r >&2'" $ssh_or_mosh_args 2>&1 | awk '/^%username% / { print $2; exit }')
 #   else
 #     if ! _is_enabled "$ssh_only"; then
-#       username=$(printf '%s' "$tty_info" | cut -d' ' -f2)
+#       username="${tty_info#* }"
+#       username="${username%% *}"
 #     fi
 #   fi
 #
@@ -584,20 +585,21 @@ run -b '[ -z "#{window_active}" ] && [ -z "#{version}" ] && tmux set display-tim
 #   ssh_or_mosh_args=$(_ssh_or_mosh_args "$tty_info")
 #   if [ -n "$ssh_or_mosh_args" ]; then
 #     # shellcheck disable=SC2086
-#     hostname=$(ssh -G $ssh_or_mosh_args 2>/dev/null | awk 'NR > 2 { exit } ; /^hostname / { print $2 }')
+#     hostname=$(ssh -G $ssh_or_mosh_args 2>/dev/null | awk '/^hostname / { print $2; exit }')
 #     # shellcheck disable=SC2086
 #     [ -z "$hostname" ] && hostname=$(ssh -T -o ControlPath=none -o ProxyCommand="sh -c 'echo %%hostname%% %h >&2'" $ssh_or_mosh_args 2>&1 | awk '/^%hostname% / { print $2; exit }')
-#     #shellcheck disable=SC1004
-#     hostname=$(echo "$hostname" | awk '\
-#     { \
-#       if ($1~/^[0-9.:]+$/) \
-#         print $1; \
-#       else \
-#         split($1, a, ".") ; print a[1] \
-#     }')
+#
+#     case "$hostname" in
+#         *[a-z-].*)
+#             hostname=${hostname%%.*}
+#             ;;
+#         127.0.0.1)
+#             hostname="localhost"
+#             ;;
+#     esac
 #   else
 #     if ! _is_enabled "$ssh_only"; then
-#       hostname=$(command hostname -s)
+#       hostname=$3
 #     fi
 #   fi
 #
@@ -864,9 +866,9 @@ run -b '[ -z "#{window_active}" ] && [ -z "#{version}" ] && tmux set display-tim
 #     -e 's%#{circled_window_index}%#(cut -c3- ~/.tmux.conf | sh -s _circled #I)%g' \
 #     -e 's%#{circled_session_name}%#(cut -c3- ~/.tmux.conf | sh -s _circled #S)%g' \
 #     -e 's%#{username}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} false #D)%g' \
-#     -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D)%g' \
+#     -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #h #D)%g' \
 #     -e 's%#{username_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} true #D)%g' \
-#     -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #D)%g')
+#     -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #h #D)%g')
 #   tmux set -g set-titles-string "$(_decode_unicode_escapes "$tmux_conf_theme_terminal_title")"
 #
 #   tmux_conf_theme_window_status_fg=${tmux_conf_theme_window_status_fg:-#8a8a8a} # white
@@ -888,16 +890,16 @@ run -b '[ -z "#{window_active}" ] && [ -z "#{version}" ] && tmux set display-tim
 #     -e 's%#{circled_window_index}%#(cut -c3- ~/.tmux.conf | sh -s _circled #I)%g' \
 #     -e 's%#{circled_session_name}%#(cut -c3- ~/.tmux.conf | sh -s _circled #S)%g' \
 #     -e 's%#{username}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} false #D)%g' \
-#     -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D)%g' \
+#     -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #h #D)%g' \
 #     -e 's%#{username_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} true #D)%g' \
-#     -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #D)%g')
+#     -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #h #D)%g')
 #   tmux_conf_theme_window_status_current_format=$(echo "$tmux_conf_theme_window_status_current_format" | sed \
 #     -e 's%#{circled_window_index}%#(cut -c3- ~/.tmux.conf | sh -s _circled #I)%g' \
 #     -e 's%#{circled_session_name}%#(cut -c3- ~/.tmux.conf | sh -s _circled #S)%g' \
 #     -e 's%#{username}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} false #D)%g' \
-#     -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D)%g' \
+#     -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #h #D)%g' \
 #     -e 's%#{username_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} true #D)%g' \
-#     -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #D)%g')
+#     -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #h #D)%g')
 #
 #   tmux  setw -g window-status-style "fg=$tmux_conf_theme_window_status_fg,bg=$tmux_conf_theme_window_status_bg,$tmux_conf_theme_window_status_attr" \;\
 #         setw -g window-status-format "$(_decode_unicode_escapes "$tmux_conf_theme_window_status_format")" \;\
@@ -1162,14 +1164,14 @@ run -b '[ -z "#{window_active}" ] && [ -z "#{version}" ] && tmux set display-tim
 #     *'#{username}'*|*'#{hostname}'*|*'#{username_ssh}'*|*'#{hostname_ssh}'*)
 #       status_left=$(echo "$status_left" | sed \
 #         -e 's%#{username}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} false #D)%g' \
-#         -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D)%g' \
+#         -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #h #D)%g' \
 #         -e 's%#{username_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} true #D)%g' \
-#         -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #D)%g')
+#         -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #h #D)%g')
 #       status_right=$(echo "$status_right" | sed \
 #         -e 's%#{username}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} false #D)%g' \
-#         -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D)%g' \
+#         -e 's%#{hostname}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #h #D)%g' \
 #         -e 's%#{username_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} true #D)%g' \
-#         -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #D)%g')
+#         -e 's%#{hostname_ssh}%#(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} true #h #D)%g')
 #       ;;
 #   esac
 #