dot_bashrc.tmpl

#!/usr/bin/env bash
# shellcheck disable=SC1054,SC1083,SC1009,SC1073,SC1065,SC1064,SC1072 # Contains Go template syntax
# PATH and environment (shared with login and non-interactive shells).
# Kept above the interactive guard: bash sources ~/.bashrc (not $BASH_ENV)
# for an sshd-spawned non-interactive command, so one-shot `ssh host cmd`
# only picks this up if it runs before the guard returns.
# shellcheck disable=SC1090,SC1091
[ -f "${HOME}/.bash_env" ] && . "${HOME}/.bash_env"

# If not running interactively, don't do anything
case $- in
*i*) ;;
*) return ;;
esac

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options
HISTCONTROL=ignoreboth

# append to the history file, don't overwrite it
shopt -s histappend

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=10000
HISTFILESIZE=20000

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

set -o vi
set -o ignoreeof
set -o noclobber

# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
  # shellcheck disable=SC1090,SC1091
  . ~/.bash_aliases
fi

# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
if ! shopt -oq posix; then
  # shellcheck disable=SC1090,SC1091
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

{{ if eq .chezmoi.os "darwin" -}}
(command -v brew >/dev/null) && {
  HOMEBREW_PREFIX="$(brew --prefix)"
  if [[ -r "${HOMEBREW_PREFIX}/etc/profile.d/bash_completion.sh" ]]; then
    # shellcheck disable=SC1091
    source "${HOMEBREW_PREFIX}/etc/profile.d/bash_completion.sh"
  else
    for COMPLETION in "${HOMEBREW_PREFIX}/etc/bash_completion.d/"*; do
      # shellcheck disable=SC1090
      [[ -r "$COMPLETION" ]] && source "$COMPLETION"
    done
  fi
}

{{ end -}}

if [ -f ~/.bash_prompt ]; then
  # shellcheck disable=SC1090,SC1091
  . ~/.bash_prompt
fi

# shellcheck disable=SC1090
[ -f "${HOME}/.local.bashrc" ] && source "${HOME}/.local.bashrc"

function start_ssh_agent() {
  # shellcheck disable=SC1090,SC1091
  (command -v ssh-agent >/dev/null 2>&1) && {
    if command -v keychain >/dev/null 2>&1; then {
      find "${HOME}/.ssh" -maxdepth 1 -name 'id_*' ! -name '*.pub' -print0 | xargs -0 keychain -q
      source "${HOME}/.keychain/${HOSTNAME}-sh"
    }; else
      {
        # Use flock to prevent race conditions when multiple shells start simultaneously
        local lockfile="${HOME}/.ssh/agent.lock"
        (
          # Skip locking where flock is unavailable (e.g. macOS without
          # util-linux); the agent still starts, just without race protection.
          if command -v flock >/dev/null 2>&1; then
            flock -n 200 || exit 0
          fi

          [ -f "${HOME}/.ssh/agent.pid" ] && source "${HOME}/.ssh/agent.pid" >/dev/null 2>&1
          if [ -z "${SSH_AGENT_PID}" ] || ! ps -p "${SSH_AGENT_PID}" >/dev/null 2>&1; then
            echo "cleanup and restart ssh-agent" >&2
            [ -f "${HOME}/.ssh/agent.pid" ] && rm -f "${HOME}/.ssh/agent.pid"
            ssh-agent >"${HOME}/.ssh/agent.pid"
          fi
        ) 200>>"${lockfile}"

        # Source the agent file outside the lock
        [ -f "${HOME}/.ssh/agent.pid" ] && source "${HOME}/.ssh/agent.pid" >/dev/null 2>&1
      }
    fi
  }
}

[ ! -f "{{ .chezmoi.homeDir }}/.ssh/noagent" ] && start_ssh_agent || true

# according to man page should be near end of bashrc
(command -v direnv >/dev/null 2>&1) && eval "$(direnv hook bash)"