Unescaped left brace in regex is deprecated, passed through in regex;

[BEpresent]

As far as I know the deprecation warnings should be fixed in the most recent version. May be I did something wrong?

./latexdiff --version                                                                                                                                             
This is LATEXDIFF 1.2.1a  (Algorithm::Diff 1.1903, Perl v5.24.0)
  (c) 2004-2016 F J Tilmann

After performing ./latexdiff test2.tex test1.tex > diff.tex the following error occurs:

Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/command{ <-- HERE \\DIFaddbeginFL}{((?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}])*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*)}/ at ./latexdiff line 836.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/command{\\DIFaddbeginFL}{ <-- HERE ((?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}])*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*)}/ at ./latexdiff line 836.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin\{((?:picture|tikzpicture|DIFnomarkup)[\w\d*@]*)}(.*?)\\end{ <-- HERE \1}/ at ./latexdiff line 2161, <DATA> line 30487.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin\{((?:aligned|array|[pbvBV]?matrix|smallmatrix|cases|split))}(.*?)\\end{ <-- HERE \1}/ at ./latexdiff line 2166, <DATA> line 30487.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin\{((?:equation[*]?|displaymath|DOLLARDOLLAR)[*]?|(?:eqnarray|align|alignat|gather|multline|flalign)[*]?|SQUAREBRACKET)}(.*?)\\frac(([\s]*%[^\n]*?)*[\r\n|\r|\n])+\{(.*?)\\end{ <-- HERE \1}/ at ./latexdiff line 2051, <DATA> line 30487.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin\{((?:equation[*]?|displaymath|DOLLARDOLLAR)[*]?|(?:eqnarray|align|alignat|gather|multline|flalign)[*]?|SQUAREBRACKET)}(.*?)\\end{ <-- HERE \1}/ at ./latexdiff line 2170, <DATA> line 30487.

Working example:

text1.tex

%\documentclass[aps,pre,amsmath,amssymb,longbibliography,lengthcheck,showpacs,superscriptaddress,nofootinbib,floatfix]{article}

\documentclass[aps,pre,amsmath,amssymb,longbibliography,lengthcheck,showpacs,superscriptaddress,nofootinbib,floatfix]{revtex4-1}

%\documentclass[aps,pre,amsmath,amssymb,lengthcheck,showpacs,floatfix]{revtex4-1}
%\documentclass[superscriptaddress,twocolumn,pre,amsmath,showpacs,bibliography]{revtex4-1}
\usepackage{siunitx}
%\usepackage[]{inputenc}
\usepackage{graphicx}% Include figure files
\usepackage{dcolumn}% Align table columns on decimal point
\usepackage{bm}% bold math
\usepackage{colordvi}
\usepackage{epsfig}
%\usepackage{bm}
\usepackage{subcaption}
\usepackage{commath}
\usepackage[usenames]{color}
%\usepackage{natbib}
\usepackage{url}
 \usepackage[english]{babel}





\begin{document}

\title{Test 2016}

\author{xxxxxx}
%\affiliation{dadasdad}


\begin{abstract}
\noindent  Abstract:Test
\end{abstract}

\date{\today}
%\pacs{???}






\maketitle

\maketitle
%\onecolumngrid
\section{Introduction}




changed text

\section{Theory (WIP)}
%\bibliographystyle{unsrt}

%\bibliographystyle{abbrv}

\bibliographystyle{unsrtnat}

%\bibliography{ExportedItems}


\end{document}

test2.tex

%\documentclass[aps,pre,amsmath,amssymb,longbibliography,lengthcheck,showpacs,superscriptaddress,nofootinbib,floatfix]{article}

\documentclass[aps,pre,amsmath,amssymb,longbibliography,lengthcheck,showpacs,superscriptaddress,nofootinbib,floatfix]{revtex4-1}

%\documentclass[aps,pre,amsmath,amssymb,lengthcheck,showpacs,floatfix]{revtex4-1}
%\documentclass[superscriptaddress,twocolumn,pre,amsmath,showpacs,bibliography]{revtex4-1}
\usepackage{siunitx}
%\usepackage[]{inputenc}
\usepackage{graphicx}% Include figure files
\usepackage{dcolumn}% Align table columns on decimal point
\usepackage{bm}% bold math
\usepackage{colordvi}
\usepackage{epsfig}
%\usepackage{bm}
\usepackage{subcaption}
\usepackage{commath}
\usepackage[usenames]{color}
%\usepackage{natbib}
\usepackage{url}
 \usepackage[english]{babel}





\begin{document}

\title{Draft 2016}

\author{xxxxxx}
%\affiliation{dadasdad}


\begin{abstract}
\noindent  Abstract: Test
\end{abstract}

\date{\today}
%\pacs{???}






\maketitle

\maketitle
%\onecolumngrid
\section{Introduction}




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\section{Theory (WIP)}
%\bibliographystyle{unsrt}

%\bibliographystyle{abbrv}

\bibliographystyle{unsrtnat}

\bibliography{ExportedItems}


\end{document}

[ftilmann]

Exemplary error report. I hope I have this fixed with a83d9cb
(still on perl 18 so cannot reproduce the errors myself).

[BEpresent]

Excuse the late response. Some left braces were fixed, some remain (rest is same as above): (Should I open a new issue?)

./latexdiff --version                                                                                                                                             
This is LATEXDIFF 1.2.1a  (Algorithm::Diff 1.1903, Perl v5.24.0)
  (c) 2004-2016 F J Tilmann

$ ./latexdiff test2.tex test1.tex > diff.tex                                                                                                                        (master✱) 
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/command\{\\DIFaddbeginFL}{ <-- HERE ((?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}])*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*\})*)}/ at ./latexdiff line 837.

[ftilmann]

I added the escape to the left brace in l 837 mentioned before in your last comment (commit 51777a0 ). Let me know if there are any more.

[BEpresent]

No errors anymore, thanks.

[ftilmann]

Thanks for testing. I will close this then.