dot/shell-rc: Only deploy the trivial prompt if not directly under Emacs.

[profile] / dot / bashrc

### -*-bash-*-
###
### Bash session things.

__mdw_shell=bash

## Only do this if we haven't done it before.  (Note that this guard isn't
## exported, so subshells will need to make their own arrangements.)
case ${__mdw_bashrc+t} in
  t) ;;
  *) __mdw_bashrc=t

## Fetch the common configuration.
. "$HOME/.shell-rc"

## If we've not run the main profile yet, we should do that first.  It sets
## up things we rely on.  Also, if there's a system script, we should run
## that too.
case ${__mdw_profile+t} in t) ;; *) . "$HOME/.profile" ;; esac
__mdw_source_if_exists /etc/bashrc

## Completion.
__mdw_source_if_exists /etc/bash_completion "$HOME/.bash_completion"

###--------------------------------------------------------------------------
### Prompt hacking.

__mdw_set_prompt_hacks () {
  case "$TERM" in
    linux*|screen*|xterm*|vt100*|eterm*)
      case "$(tput bold)" in
	"") bold="\[$(tput md)\]" unbold="\[$(tput me)\]" ;;
	*) bold="\[$(tput bold)\]" unbold="\[$(tput sgr0)\]" ;;
      esac
      gitcolour="\[$(tput setaf 6)\]"
      rccolour="\[$(tput setaf 1)\]"
      uncolour="\[$(tput op)\]"
      nl="\[\r\]"
      ;;
  esac
  host='\h' dir=' \w'
}

__mdw_before_cmd_hack () {
  set -- $(history 1); shift
  __mdw_preexec "$*"
}

## Only bother if the shell is interactive.
if [ -t 0 ]; then
  PROMPT_DIRTRIM=5
  __mdw_source_if_exists /usr/lib/git-core/git-sh-prompt
  __mdw_set_prompt_pieces
  PROMPT_COMMAND=__mdw_precmd
  PS0="\$(__mdw_before_cmd_hack)"
fi

###--------------------------------------------------------------------------
### Other shell tweaking.

## Random shell tweaks.
notify=1
set -b
shopt -u cdable_vars
shopt -s cdspell
shopt -s checkhash
shopt -s checkwinsize
shopt -s cmdhist
shopt -u dotglob
shopt -s expand_aliases
shopt -s extglob
if (( ${BASH_VERSINFO[0]} >= 4 )); then shopt -s globstar; fi
shopt -s gnu_errfmt
shopt -s histappend
shopt -s histreedit
shopt -u histverify
shopt -s hostcomplete
shopt -s huponexit
shopt -s interactive_comments
shopt -s lithist
shopt -u mailwarn
shopt -u nocaseglob
shopt -u nullglob
shopt -s promptvars
shopt -u shift_verbose
shopt -s sourcepath
HISTCONTROL=ignorespace:erasedups

###--------------------------------------------------------------------------
### Finishing touches.

## Run any local hooks.
__mdw_source_if_exists "$HOME/.bashrc-local"

###----- That's all, folks --------------------------------------------------

esac