Unescaped left brace in regex

[Leandro Heck]

I would like to know if this is a bug or just a deprecation warning. This "left brace" can still be solved for Ubuntu 16.04 users?

$ latexdiff --version
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\includeonly{ <-- HERE (.*?)}/ at /usr/bin/latexdiff line 1572.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(^(?:[^%\n]|\\%)*)\\bibliography{ <-- HERE (.*?)}/ at /usr/bin/latexdiff line 1607.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(^(?:[^%\n]|\\%)*)\\subfile{ <-- HERE (.*?)}/ at /usr/bin/latexdiff line 1622.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(?<!\\)\\{ <-- HERE / at /usr/bin/latexdiff line 2351.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{ <-- HERE MATHMODE}((?:(.(?!(?<!\\)\&|\\\\))*)?)\\end{MATHMODE}/ at /usr/bin/latexdiff line 2676.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{MATHMODE}((?:(.(?!(?<!\\)\&|\\\\))*)?)\\end{ <-- HERE MATHMODE}/ at /usr/bin/latexdiff line 2676.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{ <-- HERE MATHMODE}(.*?)\\end{MATHMODE}/ at /usr/bin/latexdiff line 2678.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{MATHMODE}(.*?)\\end{ <-- HERE MATHMODE}/ at /usr/bin/latexdiff line 2678.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\end{ <-- HERE SQUAREBRACKET}/ at /usr/bin/latexdiff line 2759.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{ <-- HERE SQUAREBRACKET}/ at /usr/bin/latexdiff line 2760.
This is LATEXDIFF 1.1.1 (Algorithm::Diff 1.15 fast, Perl v5.22.1)
  (c) 2004-2015 F J Tilmann

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Kim Mathiassen (kim-mathiassen)]

I can confirm the bug:

Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\includeonly{ <-- HERE (.*?)}/ at /usr/bin/latexdiff line 1572.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(^(?:[^%\n]|\\%)*)\\bibliography{ <-- HERE (.*?)}/ at /usr/bin/latexdiff line 1607.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(^(?:[^%\n]|\\%)*)\\subfile{ <-- HERE (.*?)}/ at /usr/bin/latexdiff line 1622.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(?<!\\)\\{ <-- HERE / at /usr/bin/latexdiff line 2351.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{ <-- HERE MATHMODE}((?:(.(?!(?<!\\)\&|\\\\))*)?)\\end{MATHMODE}/ at /usr/bin/latexdiff line 2676.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{MATHMODE}((?:(.(?!(?<!\\)\&|\\\\))*)?)\\end{ <-- HERE MATHMODE}/ at /usr/bin/latexdiff line 2676.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{ <-- HERE MATHMODE}(.*?)\\end{MATHMODE}/ at /usr/bin/latexdiff line 2678.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{MATHMODE}(.*?)\\end{ <-- HERE MATHMODE}/ at /usr/bin/latexdiff line 2678.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\end{ <-- HERE SQUAREBRACKET}/ at /usr/bin/latexdiff line 2759.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\begin{ <-- HERE SQUAREBRACKET}/ at /usr/bin/latexdiff line 2760.
This is LATEXDIFF 1.1.1 (Algorithm::Diff 1.15 fast, Perl v5.22.1)
  (c) 2004-2015 F J Tilmann

Looks like this has been fixed: https://github.com/ftilmann/latexdiff/issues/43

Just needs to be included into Ubuntu 16.04.