TOC multiline chapter title misalignment

Question

I am having some difficulty in aligning the multiline chapter title in ToC.

There is an extra space after Chapter 1:

What I do not want is that extra space. Also, all multiline chapters, sections, and subsections in ToC should be aligned properly, i.e. second, third (so on) lines should align exactly like first line (after removing the space in the first line). In my case, second and third line are aligned properly, but not the first line. Please note that there is an extra space in Appendices (after :) too which I do not need either.

Any of your help is much appreciated.

I am using the below code to achieve (in USC-Thesis class file) ToC settings:

\newlength\mylenprt %part
\newlength\mylenchp %chp
\newlength\mylenapp %app
\newlength\mylena %fig
\newlength\mylenb %tab  

\renewcommand\cftpartpresnum{\partname~}
\renewcommand\cftchappresnum{\chaptername~}
\renewcommand\cftfigpresnum{\figurename~}
\renewcommand\cfttabpresnum{\tablename~}
\renewcommand\cftchapaftersnum{:}
\renewcommand{\cftfigaftersnum}{:}
\renewcommand{\cfttabaftersnum}{:}

\settowidth\mylenprt{\cftpartfont\cftpartpresnum\cftpartaftersnum}
\settowidth\mylenchp{\cftchapfont\cftchappresnum\cftchapaftersnum}
\settowidth\mylenapp{\cftchapfont\appendixname~\cftchapaftersnum}
\settowidth\mylena{\cftfigfont\figurename~\cftfigaftersnum}
\settowidth\mylenb{\cfttabfont\tablename~\cfttabaftersnum}
\addtolength\mylenprt{\cftpartnumwidth}
\addtolength\mylenchp{\cftchapnumwidth}
\addtolength\mylenapp{\cftchapnumwidth}
\addtolength\cftfignumwidth{\mylena}
\addtolength\cfttabnumwidth{\mylenb}

\setlength\cftpartnumwidth{\mylenprt}
\setlength\cftchapnumwidth{\mylenchp}
\setlength\cftbeforefigskip{30pt}

Below is my minimal example:

\documentclass[final]{USC-Thesis}
\usepackage[titles]{tocloft}
\usepackage[lofdepth,lotdepth]{subfig}
\usepackage{appendix} %[titletoc]
\renewcommand{\cftchapfont}{
\bfseries   %\normalfont 
}
\renewcommand{\cftchappagefont}{%
\bfseries   %\normalfont 
}

\begin{document}

\renewcommand{\contentsname}{Table of Contents}
\tableofcontents

\mainmatter

\chapter{This is a super long chapter heading that requires more than one 
line in the Table of Contents. It can go more than 3 lines.}

\section{Section I}

\subsection{This is a super long chapter heading that requires more than one 
line in the Table of Contents. It can go more than 3 lines Section II}

\subsection{Section III}

\subsubsection{Subsection I}

\appendix
\addtocontents{toc}{% NB!!! must be inside the first \include
    \protect\renewcommand\protect\cftchappresnum{\appendixname~}%
    \protect\setlength{\cftchapnumwidth}{\mylenapp} \protect\newpage
    }%
\noappendicestocpagenum
\addappheadtotoc
\chapter{Some title 1}
\chapter{Some title 2}
\chapter{Some title 3}
\end{document}

Answer 1

I think that you have (at least) two problems in your MWE.

Firstly there is a missing } at the end of your \chapter title.

Secondly you define:

\renewcommand{\cftchapfont}{
  \bfseries
}

whereas it should be

\renewcommand{\cftchapfont}{%
  \bfseries
}

which will eliminate the extra space between the chapter's colon and the start of the title.