my zsh prompt with titlebar text setting

gistfile1.sh

#
# my zsh theme with iTerm titlebar manip.
# see video to see the bug I have.. any help would be HUGELY appreciated :)
#   http://youtu.be/U-h9XCCq0q4
#
# also
#  https://github.com/sjl/oh-my-zsh/
#  http://sage.ucsc.edu/xtal/iterm_tab_customization.html

# ----------------------------------------------------------------------

# iTerm Tab and Title Customization
# from http://sage.ucsc.edu/xtal/iterm_tab_customization.html

function set_title_tab {

    function settab   {
                if [[ $TERM_PROGRAM == iTerm.app && -z "$KONSOLE_DCOP_SESSION" ]];then
                                        tab_label="$PWD:h:t/$PWD:t"
                                        rlength="20"
                            echo -ne "\e]1;${(l:rlength:)tab_label}\a"
                else
                                        tab_label="$PWD:h:t/$PWD:t"
                                        rlength="20"
                        if [[ -n "$KONSOLE_DCOP_SESSION" && ( -x $(which dcop)  )  ]];then
                                dcop "$KONSOLE_DCOP_SESSION" renameSession "${(l:rlength:)tab_label}"
                        else
                            : # do nothing if tabs don't exist
                        fi

                fi
    }
    function settitle   {
                    title_lab=$PWD
                    echo -ne "\e]2;$title_lab\a"
    }
    function title_tab_chpwd { settab ; settitle }

    title_tab_chpwd

    if [[ "$TERM_PROGRAM" == "iTerm.app" ]];then
            function title_tab_preexec {  echo -ne "\e]1; $(history $HISTCMD | cut -b7- ) \a"  }
            function title_tab_precmd  { settab }
    else
            function title_tab_preexec {  echo -ne "\e]2; $(history $HISTCMD | cut -b7- ) \a"  }
            function title_tab_precmd  { settitle }
    fi

}


function prompt_char {
    git branch >/dev/null 2>/dev/null && echo '±' && return
    echo '○'
}

function battery_charge {
    echo `$BAT_CHARGE` 2>/dev/null
}

function virtualenv_info {
    [ $VIRTUAL_ENV ] && echo '('`basename $VIRTUAL_ENV`') '
}



function hg_prompt_info {
    hg prompt --angle-brackets "\
< on %{$fg[magenta]%}<branch>%{$reset_color%}>\
< at %{$fg[yellow]%}<tags|%{$reset_color%}, %{$fg[yellow]%}>%{$reset_color%}>\
%{$fg[green]%}<status|modified|unknown><update>%{$reset_color%}<
patches: <patches|join( → )|pre_applied(%{$fg[yellow]%})|post_applied(%{$reset_color%})|pre_unapplied(%{$fg_bold[black]%})|post_unapplied(%{$reset_color%})>>" 2>/dev/null
}







ZSH_THEME_GIT_PROMPT_PREFIX=" on %{$fg[magenta]%}"
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[green]%}!"
ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$fg[green]%}?"
ZSH_THEME_GIT_PROMPT_CLEAN=""



function set_prompt_width {


    function phil_precmd {


        ###
        # Get APM info.

        if which ibam > /dev/null; then
    	PR_APM_RESULT=`ibam --percentbattery`
        elif which apm > /dev/null; then
    	PR_APM_RESULT=`apm`
        fi
    }

    typeset -ga precmd_functions
    precmd_functions+=phil_precmd
}


setopt extended_glob
preexec () {
    if [[ "$TERM" == "screen" ]]; then
	local CMD=${1[(wr)^(*=*|sudo|-*)]}
	echo -n "\ek$CMD\e\\"
    fi
}


setprompt () {
    ###
    # Need this so the prompt will work.

    setopt prompt_subst


    ###
    # See if we can use colors.

    autoload colors zsh/terminfo
    if [[ "$terminfo[colors]" -ge 8 ]]; then
	colors
    fi
    for color in RED GREEN YELLOW BLUE MAGENTA CYAN WHITE; do
	eval PR_$color='%{$terminfo[bold]$fg[${(L)color}]%}'
	eval PR_LIGHT_$color='%{$fg[${(L)color}]%}'
	(( count = $count + 1 ))
    done
    PR_NO_COLOUR="%{$terminfo[sgr0]%}"


    ###
    # See if we can use extended characters to look nicer.

    typeset -A altchar
    set -A altchar ${(s..)terminfo[acsc]}
    PR_SET_CHARSET="%{$terminfo[enacs]%}"
    PR_SHIFT_IN="%{$terminfo[smacs]%}"
    PR_SHIFT_OUT="%{$terminfo[rmacs]%}"
    PR_HBAR=${altchar[q]:--}
    PR_ULCORNER=${altchar[l]:--}
    PR_LLCORNER=${altchar[m]:--}
    PR_LRCORNER=${altchar[j]:--}
    PR_URCORNER=${altchar[k]:--}


    ###
    # Decide if we need to set titlebar text.

    case $TERM in
	xterm*)
	    PR_TITLEBAR=$'%{\e]0;%(!.-=*[ROOT]*=- | .)%n@%m:%~ | ${COLUMNS}x${LINES} | %y\a%}'
	    ;;
	screen)
	    PR_TITLEBAR=$'%{\e_screen \005 (\005t) | %(!.-=[ROOT]=- | .)%n@%m:%~ | ${COLUMNS}x${LINES} | %y\e\\%}'
	    ;;
	*)
	    PR_TITLEBAR=''
	    ;;
    esac


    ###
    # Decide whether to set a screen title
    if [[ "$TERM" == "screen" ]]; then
	PR_STITLE=$'%{\ekzsh\e\\%}'
    else
	PR_STITLE=''
    fi


    ###
    # APM detection

    if which ibam > /dev/null; then
	PR_APM='$PR_RED${${PR_APM_RESULT[(f)1]}[(w)-2]}%%(${${PR_APM_RESULT[(f)3]}[(w)-1]})$PR_LIGHT_BLUE:'
    elif which apm > /dev/null; then
	PR_APM='$PR_RED${PR_APM_RESULT[(w)5,(w)6]/\% /%%}$PR_LIGHT_BLUE:'
    else
	PR_APM=''
    fi


    ###
    # Finally, the prompt.

    PROMPT='\

$PR_SET_CHARSET$PR_STITLE${(e)PR_TITLEBAR}\
%{$fg[magenta]%}%n%{$reset_color%} in %{$fg_bold[green]%}${PWD/#$HOME/~}%{$reset_color%}$(hg_prompt_info)$(git_prompt_info)
$(virtualenv_info)$(prompt_char)$(set_title_tab) '

# $(set_prompt_width)

    # The Rightside prompt
    RPROMPT=' $PR_SHIFT_IN$PR_BLUE$PR_SHIFT_OUT\
(%D{%a,%b%d})$PR_NO_COLOUR'


    PS2='$PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_BLUE$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT(\
$PR_LIGHT_GREEN%_$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT$PR_NO_COLOUR '
}


setprompt

Just switched to zsh, but I had the same one with bash. The only solution I found is to add a new line (\n) at the end of the tab title creation.

Tried and here works. Just change to:

title_lab="${PWD}\n"

in settitle