From d2df5cf4d4e925206e008af3c4db2ca03cb6f953 Mon Sep 17 00:00:00 2001
From: Gregory Pakosz <gregory.pakosz@gmail.com>
Date: Sat, 22 Jun 2019 14:23:26 +0200
Subject: [PATCH] always use grep -E for regular expression and unset
 GREP_OPTIONS, fixes #252

---
 .tmux.conf | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/.tmux.conf b/.tmux.conf
index 212caca..8c1e64d 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -175,6 +175,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 # # exit the script if any statement returns a non-true return value
 # set -e
 #
+# unset GREP_OPTIONS
 # export LC_NUMERIC=C
 #
 # if ! printf '' | sed -E 's///' 2>/dev/null; then
@@ -226,7 +227,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #   current_session=${1:-$(tmux display -p '#{session_name}')}
 #   current_pane=${2:-$(tmux display -p '#{pane_id}')}
 #
-#   dead_panes=$(tmux list-panes -s -t "$current_session" -F '#{pane_dead} #{pane_id} #{pane_start_command}' | grep -o '^1 %.\+maximized.\+$' || true)
+#   dead_panes=$(tmux list-panes -s -t "$current_session" -F '#{pane_dead} #{pane_id} #{pane_start_command}' | grep -E -o '^1 %.+maximized.+$' || true)
 #   restore=$(echo "$dead_panes" | sed -n -E -e "s/^1 $current_pane .+maximized.+'(%[0-9]+)'$/tmux swap-pane -s \1 -t $current_pane \; kill-pane -t $current_pane/p" -e "s/^1 (%[0-9]+) .+maximized.+'$current_pane'$/tmux swap-pane -s \1 -t $current_pane \; kill-pane -t \1/p" )
 #
 #   if [ -z "$restore" ]; then
@@ -688,7 +689,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #     fi
 #     eval "tmux $left $right" 2>/dev/null || true
 #   done  << EOF
-# $(tmux list-keys 2>/dev/null | grep -e 'new-window\(\s\+-c\s\+"#{pane_current_path}\|$\)')
+# $(tmux list-keys 2>/dev/null | grep -E 'new-window(\s+-c\s+"#{pane_current_path}"|$)')
 # EOF
 #
 #   tmux_conf_new_pane_retain_current_path=${tmux_conf_new_pane_retain_current_path:-true}
@@ -702,7 +703,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #     fi
 #     eval "tmux $left $right" 2>/dev/null || true
 #   done  << EOF
-# $(tmux list-keys 2>/dev/null | grep -e 'split\(-\|_\)window')
+# $(tmux list-keys 2>/dev/null | grep -E 'split(-|_)window')
 # EOF
 #
 #   tmux_conf_new_pane_reconnect_ssh=${tmux_conf_new_pane_reconnect_ssh:-false}
@@ -716,7 +717,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #     fi
 #     eval "tmux $left $right" 2>/dev/null || true
 #   done  << EOF
-# $(tmux list-keys 2>/dev/null | grep -e 'split\(-\|_\)window')
+# $(tmux list-keys 2>/dev/null | grep -E 'split(-|_)window')
 # EOF
 #
 #   tmux_conf_new_session_prompt=${tmux_conf_new_session_prompt:-false}
@@ -730,7 +731,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #     fi
 #     eval "tmux $left $right" 2>/dev/null || true
 #   done  << EOF
-# $(tmux list-keys 2>/dev/null | grep -e 'new-session')
+# $(tmux list-keys 2>/dev/null | grep 'new-session')
 # EOF
 #
 #   tmux_conf_copy_to_os_clipboard=${tmux_conf_copy_to_os_clipboard:-false}
@@ -744,7 +745,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #   if [ -n "$command" ]; then
 #     # shellcheck disable=SC2086
 #     for table in "" "-t emacs-copy" "-t vi-copy"; do
-#       line=$(tmux list-keys $table 2>/dev/null | grep -e 'copy-selection\|copy-pipe' | head -1)
+#       line=$(tmux list-keys $table 2>/dev/null | grep -E 'copy-selection|copy-pipe' | head -1)
 #       [ -z "$line" ] && continue
 #       prefix=${line%copy-*}
 #       column=${#prefix}
@@ -759,7 +760,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #         fi
 #         eval "tmux $left $right" 2>/dev/null || true
 #       done  << EOF
-# $(tmux list-keys $table 2>/dev/null | grep -e 'copy-selection\|copy-pipe')
+# $(tmux list-keys $table 2>/dev/null | grep -E 'copy-selection|copy-pipe')
 # EOF
 #     done
 #  fi
@@ -1199,7 +1200,7 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 #   _apply_overrides
 #   _apply_bindings
 #   _apply_theme
-#   for name in $(printenv | grep -Eo '^tmux_conf_[^=]+'); do tmux setenv -gu "$name"; done;
+#   for name in $(printenv | grep -E -o '^tmux_conf_[^=]+'); do tmux setenv -gu "$name"; done;
 # }
 #
 # _urlview() {