/usr/bin/byobu-ctrl-a is in byobu 5.17-0ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | #!/bin/sh
#
# byobu-ctrl-a - set the ctrl-a behavior
# Copyright (C) 2011 Canonical Ltd.
#
# Authors: Dustin Kirkland <kirkland@ubuntu.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
Usage() {
cat <<EOF
Usage: ${0##*/} [mode]
mode is one of 'screen' or 'emacs'
if not specified, prompt the user
EOF
}
PKG="byobu"
[ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc"
[ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX
. "${BYOBU_PREFIX}/lib/${PKG}/include/common"
bind_to=""
keybindings="$BYOBU_CONFIG_DIR/keybindings"
[ "$BYOBU_BACKEND" = "tmux" ] && keybindings="$keybindings.tmux"
touch "$keybindings"
# If the user has already chosen an escape sequence, then
# presumably they want ctrl-a to operate in emacs mode
grep -qs "^escape" "$keybindings" && bind_to="emacs"
case "${1}" in
-h|--help) Usage; exit 0;;
screen) bind_to="screen";;
emacs) bind_to="emacs";;
"") :;;
*) { Usage printf "%s\n" "Bad argument $1"; } 1>&2; exit 1;;
esac
while [ -z "$bind_to" ]; do
echo
echo "Configure Byobu's ctrl-a behavior..."
echo
echo "When you press ctrl-a in Byobu, do you want it to operate in:"
echo " (1) Screen mode (GNU Screen's default escape sequence)"
echo " (2) Emacs mode (go to beginning of line)"
echo
echo "Note that:"
echo " - F12 also operates as an escape in Byobu"
echo " - You can press F9 and choose your escape character"
echo " - You can run 'byobu-ctrl-a' at any time to change your selection"
echo
printf "Select [1 or 2]: "
s=$(head -n1)
echo
case "$s" in
1) bind_to="screen"; break;;
2) bind_to="emacs"; break;;
esac
done
case "$bind_to" in
emacs)
case "$BYOBU_BACKEND" in
screen)
$BYOBU_SED -i -e "/^register x /d" -e "/^bindkey \"^A\"/d" -e "/^escape escape \^Aa/d" "$keybindings"
echo 'bindkey "^A"' >> "$keybindings"
$BYOBU_BACKEND -X at 0 source "$BYOBU_CONFIG_DIR/profile"
;;
tmux)
$BYOBU_SED -i -e "/^set -g prefix/d" -e "/ send-prefix/d" -e "/^unbind-key -n C-a/d" "$keybindings"
echo "set -g prefix F12" >> "$keybindings"
echo "unbind-key -n C-a" >> "$keybindings"
$BYOBU_BACKEND source "$BYOBU_PREFIX/share/byobu/profiles/tmuxrc"
;;
esac
echo "INFO: ctrl-a will now operate in emacs mode"
;;
screen)
case "$BYOBU_BACKEND" in
screen)
$BYOBU_SED -i -e "/^register x /d" -e "/^bindkey \"^A\"/d" -e "/^escape /d" "$keybindings"
echo 'escape "^Aa"' >> "$keybindings"
echo 'register x "^A"' >> "$keybindings"
echo 'bindkey "^A"' >> "$keybindings"
$BYOBU_BACKEND -X at 0 source "$BYOBU_CONFIG_DIR/profile"
;;
tmux)
$BYOBU_SED -i -e "/^set -g prefix/d" -e "/ send-prefix/d" -e "/^unbind-key -n C-a/d" "$keybindings"
echo "unbind-key -n C-a" >> "$keybindings"
if $BYOBU_BACKEND -V | grep " 1.5"; then
# tmux 1.5 supports a list of prefixes
echo "set -g prefix ^A,F12" >> "$keybindings"
else
# tmux 1.6 and above supports prefix and prefix2
echo "set -g prefix ^A" >> "$keybindings"
echo "set -g prefix2 ^A" >> "$keybindings"
fi
echo "bind a send-prefix" >> "$keybindings"
$BYOBU_BACKEND source "$BYOBU_PREFIX/share/byobu/profiles/tmuxrc"
;;
esac
echo "INFO: ctrl-a will now operate in GNU Screen mode"
;;
*)
echo "Error: bad value for binding: $bind_to"
;;
esac
echo "To modify this behavior again later, run 'byobu-ctrl-a'"
echo
# vi: syntax=sh ts=4 noexpandtab
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