Lines including new paragraph placed inside texttt (causing invalid LaTeX) when processing large diff

After a sequence of large (but move only) changes inside a large .tex file (specifically this change https://github.com/acidanthera/OpenCorePkg/pull/537), latexdiff is producing invalid LaTeX: in two or three instances, it is placing several lines of diff, including a new paragraph, inside texttt, which is invalid LaTeX for subsequent processing.

The issue occurs cross-platform, and on 1.3.1 as well as 1.3.3.

This is the error shown after using pdflatex to process the output:

Runaway argument?
{\DIFdelbegin \DIFdel {Acidanthera}\DIFdel {. }
! Paragraph ended before \text@command was complete.
<to be read again>
                   \par
l.6495 ...lend \DIFaddbegin \DIFadd{ARTFrequency}}
                                                   \DIFadd{in

This is the fragment of the diff file, with the close brace of the texttt, which starts on line 6488, highlighted on line 6495, several lines below:

Also in plain text:

\begin{enumerate}
\DIFaddbegin 

\DIFaddend \item
  \texttt{\DIFdelbegin \DIFdel{SpoofVendor}\DIFdelend \DIFaddbegin \DIFadd{ARTFrequency}\DIFaddend }\\
  \textbf{Type}: \texttt{plist\ \DIFdelbegin \DIFdel{boolean}\DIFdelend \DIFaddbegin \DIFadd{integer}\DIFaddend }\DIFaddbegin \DIFadd{, 64-bit}\DIFaddend \\
  \textbf{Failsafe}: \texttt{\DIFdelbegin \DIFdel{false}\DIFdelend \DIFaddbegin \DIFadd{0}\DIFaddend } \DIFaddbegin \DIFadd{(Automatic)}\DIFaddend \\
  \textbf{Description}: Sets \DIFdelbegin \DIFdel{SMBIOS vendor fields to }\DIFdelend \texttt{\DIFdelbegin \DIFdel{Acidanthera}%DIFDELCMD < \MBLOCKRIGHTBRACE%%%
\DIFdel{.
}%DIFDELCMD < 

%DIFDELCMD <   %%%
\DIFdel{It can be dangerous to use ``Apple'' in
  SMBIOS vendor fields for reasons outlined in the
  }\DIFdelend \DIFaddbegin \DIFadd{ARTFrequency}} \DIFadd{in
  }\DIFaddend \texttt{\DIFdelbegin \DIFdel{SystemManufacturer}%DIFDELCMD < \MBLOCKRIGHTBRACE %%%
\DIFdel{description.
However, certain firmware may not provide
  valid values otherwise, which could obstruct the operation of some software.
}\DIFdelend \DIFaddbegin \DIFadd{gEfiProcessorSubClassGuid}}\DIFadd{.
}\DIFaddend

The same issue occurs three times in the diff file. I can manually fix up the invalid LaTeX and the diff file is otherwise fine.

ftilmann / latexdiff

Lines including new paragraph placed inside texttt (causing invalid LaTeX) when processing large diff #300