602 lines
22 KiB
Bash
602 lines
22 KiB
Bash
#!/bin/bash
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# The iTerm2 customizations fall under the following license:
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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# -- BEGIN ITERM2 CUSTOMIZATIONS --
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if [[ "$ITERM_ENABLE_SHELL_INTEGRATION_WITH_TMUX""$TERM" != screen && "$ITERM_SHELL_INTEGRATION_INSTALLED" = "" && "$-" == *i* ]]; then
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if shopt extdebug | grep on > /dev/null; then
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echo "iTerm2 Shell Integration not installed."
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echo ""
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echo "Your shell has 'extdebug' turned on."
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echo "This is incompatible with shell integration."
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echo "Find 'shopt -s extdebug' in bash's rc scripts and remove it."
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return 0
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fi
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ITERM_SHELL_INTEGRATION_INSTALLED=Yes
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# Saved copy of your PS1. This is used to detect if the user changes PS1
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# directly. ITERM_PREV_PS1 will hold the last value that this script set PS1 to
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# (including various custom escape sequences).
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ITERM_PREV_PS1="$PS1"
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# The following chunk of code, bash-preexec.sh, is licensed like this:
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# The MIT License
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#
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# Copyright (c) 2015 Ryan Caloras and contributors (see https://github.com/rcaloras/bash-preexec)
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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# Wrap bash-preexec.sh in a function so that, if it exits early due to having
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# been sourced elsewhere, it doesn't exit our entire script.
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_install_bash_preexec () {
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# -- BEGIN BASH-PREEXEC.SH --
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#!/bin/bash
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#
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# bash-preexec.sh -- Bash support for ZSH-like 'preexec' and 'precmd' functions.
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# https://github.com/rcaloras/bash-preexec
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#
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#
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# 'preexec' functions are executed before each interactive command is
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# executed, with the interactive command as its argument. The 'precmd'
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# function is executed before each prompt is displayed.
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#
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# Author: Ryan Caloras (ryan@bashhub.com)
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# Forked from Original Author: Glyph Lefkowitz
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#
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# V0.3.7
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#
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# -- END ITERM2 CUSTOMIZATIONS --
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# bash-preexec.sh -- Bash support for ZSH-like 'preexec' and 'precmd' functions.
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# https://github.com/rcaloras/bash-preexec
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#
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#
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# 'preexec' functions are executed before each interactive command is
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# executed, with the interactive command as its argument. The 'precmd'
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# function is executed before each prompt is displayed.
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#
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# Author: Ryan Caloras (ryan@bashhub.com)
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# Forked from Original Author: Glyph Lefkowitz
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#
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# V0.3.7
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#
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# General Usage:
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#
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# 1. Source this file at the end of your bash profile so as not to interfere
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# with anything else that's using PROMPT_COMMAND.
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#
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# 2. Add any precmd or preexec functions by appending them to their arrays:
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# e.g.
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# precmd_functions+=(my_precmd_function)
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# precmd_functions+=(some_other_precmd_function)
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#
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# preexec_functions+=(my_preexec_function)
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#
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# 3. Consider changing anything using the DEBUG trap or PROMPT_COMMAND
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# to use preexec and precmd instead. Preexisting usages will be
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# preserved, but doing so manually may be less surprising.
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#
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# Note: This module requires two Bash features which you must not otherwise be
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# using: the "DEBUG" trap, and the "PROMPT_COMMAND" variable. If you override
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# either of these after bash-preexec has been installed it will most likely break.
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# Avoid duplicate inclusion
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if [[ "$__bp_imported" == "defined" ]]; then
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return 0
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fi
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__bp_imported="defined"
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# Should be available to each precmd and preexec
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# functions, should they want it.
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__bp_last_ret_value="$?"
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__bp_last_argument_prev_command="$_"
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__bp_inside_precmd=0
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__bp_inside_preexec=0
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# Fails if any of the given variables are readonly
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# Reference https://stackoverflow.com/a/4441178
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__bp_require_not_readonly() {
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for var; do
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if ! ( unset "$var" 2> /dev/null ); then
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echo "iTerm2 Shell Integration: bash-preexec requires write access to ${var}" >&2
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return 1
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fi
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done
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}
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# Remove ignorespace and or replace ignoreboth from HISTCONTROL
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# so we can accurately invoke preexec with a command from our
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# history even if it starts with a space.
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__bp_adjust_histcontrol() {
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local histcontrol
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histcontrol="${HISTCONTROL//ignorespace}"
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# Replace ignoreboth with ignoredups
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if [[ "$histcontrol" == *"ignoreboth"* ]]; then
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histcontrol="ignoredups:${histcontrol//ignoreboth}"
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fi;
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export HISTCONTROL="$histcontrol"
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}
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# This variable describes whether we are currently in "interactive mode";
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# i.e. whether this shell has just executed a prompt and is waiting for user
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# input. It documents whether the current command invoked by the trace hook is
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# run interactively by the user; it's set immediately after the prompt hook,
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# and unset as soon as the trace hook is run.
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__bp_preexec_interactive_mode=""
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__bp_trim_whitespace() {
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local var=$@
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var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
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var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
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echo -n "$var"
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}
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# This function is installed as part of the PROMPT_COMMAND;
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# It sets a variable to indicate that the prompt was just displayed,
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# to allow the DEBUG trap to know that the next command is likely interactive.
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__bp_interactive_mode() {
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__bp_preexec_interactive_mode="on";
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}
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# This function is installed as part of the PROMPT_COMMAND.
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# It will invoke any functions defined in the precmd_functions array.
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__bp_precmd_invoke_cmd() {
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# Save the returned value from our last command. Note: this MUST be the
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# first thing done in this function.
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__bp_last_ret_value="$?"
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# Don't invoke precmds if we are inside an execution of an "original
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# prompt command" by another precmd execution loop. This avoids infinite
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# recursion.
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if (( __bp_inside_precmd > 0 )); then
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return
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fi
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local __bp_inside_precmd=1
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# Invoke every function defined in our function array.
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local precmd_function
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for precmd_function in "${precmd_functions[@]}"; do
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# Only execute this function if it actually exists.
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# Test existence of functions with: declare -[Ff]
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if type -t "$precmd_function" 1>/dev/null; then
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__bp_set_ret_value "$__bp_last_ret_value" "$__bp_last_argument_prev_command"
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# Quote our function invocation to prevent issues with IFS
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"$precmd_function"
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fi
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done
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}
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# Sets a return value in $?. We may want to get access to the $? variable in our
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# precmd functions. This is available for instance in zsh. We can simulate it in bash
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# by setting the value here.
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__bp_set_ret_value() {
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return $1
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}
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__bp_in_prompt_command() {
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local prompt_command_array
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IFS=';' read -ra prompt_command_array <<< "$PROMPT_COMMAND"
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local trimmed_arg
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trimmed_arg=$(__bp_trim_whitespace "$1")
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local command
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for command in "${prompt_command_array[@]}"; do
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local trimmed_command
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trimmed_command=$(__bp_trim_whitespace "$command")
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# Only execute each function if it actually exists.
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if [[ "$trimmed_command" == "$trimmed_arg" ]]; then
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return 0
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fi
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done
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return 1
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}
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# This function is installed as the DEBUG trap. It is invoked before each
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# interactive prompt display. Its purpose is to inspect the current
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# environment to attempt to detect if the current command is being invoked
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# interactively, and invoke 'preexec' if so.
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__bp_preexec_invoke_exec() {
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# Save the contents of $_ so that it can be restored later on.
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# https://stackoverflow.com/questions/40944532/bash-preserve-in-a-debug-trap#40944702
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__bp_last_argument_prev_command="$1"
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# Don't invoke preexecs if we are inside of another preexec.
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if (( __bp_inside_preexec > 0 )); then
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return
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fi
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local __bp_inside_preexec=1
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# Checks if the file descriptor is not standard out (i.e. '1')
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# __bp_delay_install checks if we're in test. Needed for bats to run.
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# Prevents preexec from being invoked for functions in PS1
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if [[ ! -t 1 && -z "$__bp_delay_install" ]]; then
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return
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fi
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if [[ -n "$COMP_LINE" ]]; then
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# We're in the middle of a completer. This obviously can't be
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# an interactively issued command.
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return
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fi
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if [[ -z "$__bp_preexec_interactive_mode" ]]; then
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# We're doing something related to displaying the prompt. Let the
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# prompt set the title instead of me.
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return
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else
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# If we're in a subshell, then the prompt won't be re-displayed to put
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# us back into interactive mode, so let's not set the variable back.
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# In other words, if you have a subshell like
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# (sleep 1; sleep 2)
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# You want to see the 'sleep 2' as a set_command_title as well.
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if [[ 0 -eq "$BASH_SUBSHELL" ]]; then
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__bp_preexec_interactive_mode=""
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fi
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fi
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if __bp_in_prompt_command "$BASH_COMMAND"; then
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# If we're executing something inside our prompt_command then we don't
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# want to call preexec. Bash prior to 3.1 can't detect this at all :/
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__bp_preexec_interactive_mode=""
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return
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fi
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local this_command
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this_command=$(HISTTIMEFORMAT= builtin history 1 | { IFS=" " read -r _ this_command; echo "$this_command"; })
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# Sanity check to make sure we have something to invoke our function with.
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if [[ -z "$this_command" ]]; then
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return
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fi
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# If none of the previous checks have returned out of this function, then
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# the command is in fact interactive and we should invoke the user's
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# preexec functions.
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# Invoke every function defined in our function array.
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local preexec_function
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local preexec_function_ret_value
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local preexec_ret_value=0
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for preexec_function in "${preexec_functions[@]}"; do
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# Only execute each function if it actually exists.
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# Test existence of function with: declare -[fF]
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if type -t "$preexec_function" 1>/dev/null; then
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__bp_set_ret_value $__bp_last_ret_value
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# Quote our function invocation to prevent issues with IFS
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"$preexec_function" "$this_command"
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preexec_function_ret_value="$?"
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if [[ "$preexec_function_ret_value" != 0 ]]; then
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preexec_ret_value="$preexec_function_ret_value"
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fi
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fi
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done
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# Restore the last argument of the last executed command, and set the return
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# value of the DEBUG trap to be the return code of the last preexec function
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# to return an error.
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# If `extdebug` is enabled a non-zero return value from any preexec function
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# will cause the user's command not to execute.
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# Run `shopt -s extdebug` to enable
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__bp_set_ret_value "$preexec_ret_value" "$__bp_last_argument_prev_command"
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}
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__bp_install() {
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# Exit if we already have this installed.
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if [[ "$PROMPT_COMMAND" == *"__bp_precmd_invoke_cmd"* ]]; then
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return 1;
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fi
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trap '__bp_preexec_invoke_exec "$_"' DEBUG
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# Preserve any prior DEBUG trap as a preexec function
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local prior_trap=$(sed "s/[^']*'\(.*\)'[^']*/\1/" <<<"$__bp_trap_string")
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unset __bp_trap_string
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if [[ -n "$prior_trap" ]]; then
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eval '__bp_original_debug_trap() {
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'"$prior_trap"'
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}'
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preexec_functions+=(__bp_original_debug_trap)
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fi
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# Adjust our HISTCONTROL Variable if needed.
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__bp_adjust_histcontrol
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# Issue #25. Setting debug trap for subshells causes sessions to exit for
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# backgrounded subshell commands (e.g. (pwd)& ). Believe this is a bug in Bash.
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#
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# Disabling this by default. It can be enabled by setting this variable.
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if [[ -n "$__bp_enable_subshells" ]]; then
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# Set so debug trap will work be invoked in subshells.
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set -o functrace > /dev/null 2>&1
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shopt -s extdebug > /dev/null 2>&1
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fi;
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# Install our hooks in PROMPT_COMMAND to allow our trap to know when we've
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# actually entered something.
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PROMPT_COMMAND="__bp_precmd_invoke_cmd; __bp_interactive_mode"
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# Add two functions to our arrays for convenience
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# of definition.
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precmd_functions+=(precmd)
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preexec_functions+=(preexec)
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# Since this function is invoked via PROMPT_COMMAND, re-execute PC now that it's properly set
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eval "$PROMPT_COMMAND"
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}
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# Sets our trap and __bp_install as part of our PROMPT_COMMAND to install
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# after our session has started. This allows bash-preexec to be included
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# at any point in our bash profile. Ideally we could set our trap inside
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# __bp_install, but if a trap already exists it'll only set locally to
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# the function.
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__bp_install_after_session_init() {
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# Make sure this is bash that's running this and return otherwise.
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if [[ -z "$BASH_VERSION" ]]; then
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return 1;
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fi
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# bash-preexec needs to modify these variables in order to work correctly
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# if it can't, just stop the installation
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__bp_require_not_readonly PROMPT_COMMAND HISTCONTROL HISTTIMEFORMAT || return
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# If there's an existing PROMPT_COMMAND capture it and convert it into a function
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# So it is preserved and invoked during precmd.
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if [[ -n "$PROMPT_COMMAND" ]]; then
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eval '__bp_original_prompt_command() {
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'"$PROMPT_COMMAND"'
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}'
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precmd_functions+=(__bp_original_prompt_command)
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fi
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# Installation is finalized in PROMPT_COMMAND, which allows us to override the DEBUG
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# trap. __bp_install sets PROMPT_COMMAND to its final value, so these are only
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# invoked once.
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# It's necessary to clear any existing DEBUG trap in order to set it from the install function.
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# Using \n as it's the most universal delimiter of bash commands
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PROMPT_COMMAND=$'\n__bp_trap_string="$(trap -p DEBUG)"\ntrap DEBUG\n__bp_install\n'
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}
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# Run our install so long as we're not delaying it.
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if [[ -z "$__bp_delay_install" ]]; then
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__bp_install_after_session_init
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fi;
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# -- END BASH-PREEXEC.SH --
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}
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_install_bash_preexec
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unset -f _install_bash_preexec
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# -- BEGIN ITERM2 CUSTOMIZATIONS --
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# We don't care about whitespace, but users care about not changing their histcontrol variables.
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# We overwrite the upstream __bp_adjust_histcontrol function whcih gets called from the next
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# PROMPT_COMMAND invocation.
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function __bp_adjust_histcontrol() {
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true
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}
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function iterm2_begin_osc {
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printf "\033]"
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}
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function iterm2_end_osc {
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printf "\007"
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}
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function iterm2_print_state_data() {
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iterm2_begin_osc
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printf "1337;RemoteHost=%s@%s" "$USER" "$iterm2_hostname"
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iterm2_end_osc
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iterm2_begin_osc
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printf "1337;CurrentDir=%s" "$PWD"
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iterm2_end_osc
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iterm2_print_user_vars
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}
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# Usage: iterm2_set_user_var key value
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function iterm2_set_user_var() {
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iterm2_begin_osc
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printf "1337;SetUserVar=%s=%s" "$1" $(printf "%s" "$2" | base64 | tr -d '\n')
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iterm2_end_osc
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}
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if [ -z "$(type -t iterm2_print_user_vars)" ] || [ "$(type -t iterm2_print_user_vars)" != function ]; then
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# iterm2_print_user_vars is not already defined. Provide a no-op default version.
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#
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# Users can write their own version of this function. It should call
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# iterm2_set_user_var but not produce any other output.
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function iterm2_print_user_vars() {
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true
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}
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fi
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function iterm2_prompt_prefix() {
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iterm2_begin_osc
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printf "133;D;\$?"
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iterm2_end_osc
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}
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function iterm2_prompt_mark() {
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iterm2_begin_osc
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printf "133;A"
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iterm2_end_osc
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}
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function iterm2_prompt_suffix() {
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iterm2_begin_osc
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printf "133;B"
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iterm2_end_osc
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}
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function iterm2_print_version_number() {
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iterm2_begin_osc
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printf "1337;ShellIntegrationVersion=12;shell=bash"
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iterm2_end_osc
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}
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|
|
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# If hostname -f is slow on your system, set iterm2_hostname before sourcing this script.
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if [ -z "${iterm2_hostname:-}" ]; then
|
|
iterm2_hostname=$(hostname -f 2>/dev/null)
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# some flavors of BSD (i.e. NetBSD and OpenBSD) don't have the -f option
|
|
if [ $? -ne 0 ]; then
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|
iterm2_hostname=$(hostname)
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|
fi
|
|
fi
|
|
|
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# Runs after interactively edited command but before execution
|
|
__iterm2_preexec() {
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|
# Save the returned value from our last command
|
|
__iterm2_last_ret_value="$?"
|
|
|
|
iterm2_begin_osc
|
|
printf "133;C;"
|
|
iterm2_end_osc
|
|
# If PS1 still has the value we set it to in iterm2_preexec_invoke_cmd then
|
|
# restore it to its original value. It might have changed if you have
|
|
# another PROMPT_COMMAND (like liquidprompt) that modifies PS1.
|
|
if [ -n "${ITERM_ORIG_PS1+xxx}" -a "$PS1" = "$ITERM_PREV_PS1" ]
|
|
then
|
|
export PS1="$ITERM_ORIG_PS1"
|
|
fi
|
|
iterm2_ran_preexec="yes"
|
|
|
|
__bp_set_ret_value "$__iterm2_last_ret_value" "$__bp_last_argument_prev_command"
|
|
}
|
|
|
|
function __iterm2_precmd () {
|
|
__iterm2_last_ret_value="$?"
|
|
|
|
# Work around a bug in CentOS 7.2 where preexec doesn't run if you press
|
|
# ^C while entering a command.
|
|
if [[ -z "${iterm2_ran_preexec:-}" ]]
|
|
then
|
|
__iterm2_preexec ""
|
|
fi
|
|
iterm2_ran_preexec=""
|
|
|
|
|
|
|
|
# This is an iTerm2 addition to try to work around a problem in the
|
|
# original preexec.bash.
|
|
# When the PS1 has command substitutions, this gets invoked for each
|
|
# substitution and each command that's run within the substitution, which
|
|
# really adds up. It would be great if we could do something like this at
|
|
# the end of this script:
|
|
# PS1="$(iterm2_prompt_prefix)$PS1($iterm2_prompt_suffix)"
|
|
# and have iterm2_prompt_prefix set a global variable that tells precmd not to
|
|
# output anything and have iterm2_prompt_suffix reset that variable.
|
|
# Unfortunately, command substitutions run in subshells and can't
|
|
# communicate to the outside world.
|
|
# Instead, we have this workaround. We save the original value of PS1 in
|
|
# $ITERM_ORIG_PS1. Then each time this function is run (it's called from
|
|
# PROMPT_COMMAND just before the prompt is shown) it will change PS1 to a
|
|
# string without any command substitutions by doing eval on ITERM_ORIG_PS1. At
|
|
# this point ITERM_PREEXEC_INTERACTIVE_MODE is still the empty string, so preexec
|
|
# won't produce output for command substitutions.
|
|
|
|
# The first time this is called ITERM_ORIG_PS1 is unset. This tests if the variable
|
|
# is undefined (not just empty) and initializes it. We can't initialize this at the
|
|
# top of the script because it breaks with liquidprompt. liquidprompt wants to
|
|
# set PS1 from a PROMPT_COMMAND that runs just before us. Setting ITERM_ORIG_PS1
|
|
# at the top of the script will overwrite liquidprompt's PS1, whose value would
|
|
# never make it into ITERM_ORIG_PS1. Issue 4532. It's important to check
|
|
# if it's undefined before checking if it's empty because some users have
|
|
# bash set to error out on referencing an undefined variable.
|
|
if [ -z "${ITERM_ORIG_PS1+xxx}" ]
|
|
then
|
|
# ITERM_ORIG_PS1 always holds the last user-set value of PS1.
|
|
# You only get here on the first time iterm2_preexec_invoke_cmd is called.
|
|
export ITERM_ORIG_PS1="$PS1"
|
|
fi
|
|
|
|
# If you want to generate PS1 dynamically from PROMPT_COMMAND, the best way
|
|
# to do it is to define a function named iterm2_generate_ps1 that sets PS1.
|
|
# Issue 5964. Other shells don't have this issue because they don't need
|
|
# such extremes to get precmd and preexec.
|
|
if [ -n "$(type -t iterm2_generate_ps1)" ] && [ "$(type -t iterm2_generate_ps1)" = function ]; then
|
|
iterm2_generate_ps1
|
|
fi
|
|
|
|
|
|
if [[ "$PS1" != "$ITERM_PREV_PS1" ]]
|
|
then
|
|
export ITERM_ORIG_PS1="$PS1"
|
|
fi
|
|
|
|
# Get the value of the prompt prefix, which will change $?
|
|
\local iterm2_prompt_prefix_value="$(iterm2_prompt_prefix)"
|
|
|
|
# Add the mark unless the prompt includes '$(iterm2_prompt_mark)' as a substring.
|
|
if [[ $ITERM_ORIG_PS1 != *'$(iterm2_prompt_mark)'* ]]
|
|
then
|
|
iterm2_prompt_prefix_value="$iterm2_prompt_prefix_value$(iterm2_prompt_mark)"
|
|
fi
|
|
|
|
# Send escape sequences with current directory and hostname.
|
|
iterm2_print_state_data
|
|
|
|
# Reset $? to its saved value, which might be used in $ITERM_ORIG_PS1.
|
|
__bp_set_ret_value "$__iterm2_last_ret_value" "$__bp_last_argument_prev_command"
|
|
|
|
# Set PS1 to various escape sequences, the user's preferred prompt, and more escape sequences.
|
|
export PS1="\[$iterm2_prompt_prefix_value\]$ITERM_ORIG_PS1\[$(iterm2_prompt_suffix)\]"
|
|
|
|
# Save the value we just set PS1 to so if the user changes PS1 we'll know and we can update ITERM_ORIG_PS1.
|
|
export ITERM_PREV_PS1="$PS1"
|
|
__bp_set_ret_value "$__iterm2_last_ret_value" "$__bp_last_argument_prev_command"
|
|
}
|
|
|
|
# Install my functions
|
|
preexec_functions+=(__iterm2_preexec)
|
|
precmd_functions+=(__iterm2_precmd)
|
|
|
|
iterm2_print_state_data
|
|
iterm2_print_version_number
|
|
fi
|
|
|
|
# -- END ITERM2 CUSTOMIZATIONS --
|
|
|