Page Layout ⇒ cftpartnumwidth - TOC not responding to changes

[ujujinsan]

I am using miktex 2.9.
Compiling with pdflatex.

I want to increase the numwidth in TOC of part entry in article class to make titles of parts aligned to one line.

The minimal example:

Code: Select all

\documentclass{article}
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 
\usepackage[english]{babel} 

\usepackage{tocloft}
\setlength{\cftpartnumwidth}{4em}
\cftsetindents{part}{0em}{4em}

\begin{document}
\tableofcontents
\part{Part1}
\part{Part2}
\part{Part3}
\part{Part4}
\part{Part5}
\part{Part6}
\end{document}

Neither seems to work:

Code: Select all

\setlength{\cftpartnumwidth}{4em}
\cftsetindents{part}{0em}{4em}

I can easily modify numwidth of sections subsections etc. Changes are reflected in TOC.

While reading tocloft documentation it is stated:

There is no explicit numwidth for a part; instead a gap of 1em is put between the number and the title text.

However while reading tocloft.sty I see no difference between definitions of \renewcommand*{\l@part}[2] and \renewcommand*{\l@section}[2] .
All modifications to tocloft.sty concerning partnumwidth fail to deliver.

Any ideas? I will be grateful for help!