Bash config: tweak cmd prompt: status+non/mc+kerb.+dirs/git

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>

1 files changed, 38 insertions, 3 deletions

diff --git a/.bashrc b/.bashrc
index 80769f5..2f32f5a 100644
--- a/.bashrc
+++ b/.bashrc
@@ -45,9 +45,40 @@ shopt -s histappend
 HISTSIZE=60000
 HISTCONTROL=ignoreboth
 
-# subshell to avoid triggering DEBUG. (src: http://stuff.lhunath.com/.bashrc)
-PROMPT_COMMAND='(history -a)'
-PS1='\[\033[01;34m\]\u@\h\[\033[00m\]:\[\033[01;36m\]\w\[\033[00m\]\$ '
+# SMART EXIT CODE INFO (by jpokorny)
+#
+# demo@system:~[0|..]$ true
+# demo@system:~[0|00]$ 
+# demo@system:~[0|..]$ false
+# demo@system:~[0|01]$ 
+# demo@system:~[0|..]$ ^C
+# demo@system:~[0|..]$ trueue
+# > bash: trueue: command not found
+# demo@system:~[0|7f]$ kinit
+# demo@system:~(0|00)$ 
+#
+# see XXX at preexec (tightly connected)
+# XXX subshell to avoid triggering DEBUG? (src: http://stuff.lhunath.com/.bashrc)
+#PROMPT_COMMAND='(trap - DEBUG; history -a)'
+PROMPT_COMMAND='(history -a; [ ${_postexec_flag} -ne 0 ]) \
+  && _postexec_flag_=${_postexec_flag} || _postexec_flag_=0'
+PS1='\[\033[01;34m\]\u@\h\[\033[00m\]:\[\033[01;36m\]\w\[\033[00m\]\[\033[$(
+  _ret=$?
+  [ -n "${MC_SID}" ] && _mc_char="#" || _mc_char="|"
+  klist -s && { _lpar="("; _rpar=")"; } || { _lpar="["; _rpar="]"; }
+  git rev-parse --git-dir &>/dev/null \
+    && { git diff-files --quiet \
+         && { git diff-index --quiet --cached HEAD \
+              && _head=$(git rev-parse --abbrev-ref HEAD) \
+	      || _head=C; } \
+	 || _head=S; } \
+    || _head="$(($(dirs -p | head -n9 | wc -l) - 1))"
+  _head+=${_mc_char}
+  [ "${_postexec_flag_}" -eq 0 ] && printf "0m\]${_lpar}${_head}..${_rpar}" || {
+    [ ${_ret} -eq 0 ] && printf "1;34m\]" || printf "1;35m\]"
+    printf "${_lpar}${_head}%0.2x${_rpar}" "${_ret}"
+  }
+)$\[\033[00m\] '
 
 ACK=ack
 test "$(ack --version | head -n1 | sed 's|^ack\s\([0-9]\+\).*|\1|')" -ge 2 \
@@ -140,15 +171,19 @@ img-qr () {
 # prexec stuff
 
 _preexec_flag=0
+_postexec_flag=0
 # idea is simple: auto-paginate output of selected commads that cannot do it
 #                 on their own
 # XXX: hacky, not exactly sure why this (and so far only this) works :)
+# BUG: once something paginated, sole Enter will repeat last command
 preexec() {
+	_postexec_flag=0
 	local cmd=${1%% *}
 	#test ${_preexec_flag} -eq 0 && test ${BASH_SUBSHELL} -eq 0 \
 	#  || { _preexec_flag=0; return 0; }
 	test ${BASH_SUBSHELL} -eq 0 && [[ ! "${1}" =~ .*\|.* ]] \
 	  || { _preexec_flag=0; return 0; }
+	_postexec_flag=1
 	case "$1" in
 colordiff\ *|\
 diff\ *|\