Guake tab auto renaming for Bash. Source in your .bashrc.

guake-tab-rename.bash

#!/usr/bin/env bash

function simpleDirName(){
  # Echoes only the last folder of the current path, or ~ if we are at $HOME
  if [ "$(pwd)" == "$HOME" ]
  then
    DN="~"
  else
    DN="${PWD##*/}";
  fi
  echo $DN;
}

function renameTab() {
  NAMELEN=8
  NAME=$(whoami)
  TABNAME="${NAME:0:$NAMELEN}: $(simpleDirName)";

  guake -r "$TABNAME";
}

function isGuake(){
    CURRENT_EMU=$(basename "/"$(ps -f -p $(cat /proc/$(echo $$)/stat | cut -d \  -f 4) | tail -1 | sed 's/^.* //'))
    if [ "$CURRENT_EMU" == "guake.main" ]
    then
      return 0;
    else
      return 1;
    fi
}

if isGuake
then
  export PROMPT_COMMAND="$PROMPT_COMMAND;renameTab"
fi