\newcommand{\alg}[1]{\text{\bf #1}}
\newcommand{\setmerge}{\alg{merge}}
\newcommand{\setmergeof}[3]{\setmerge\mergeof{#1}{#2}{#3}}
+\newcommand{\stmtmergeof}[3]{\setmerge\mergeof{#1}{#2}{#3}}
%\newcommand{\setmergeof}[3]{\setmerge\left\lgroup #1 \;\middle\lmoustache\; #2 \;\middle\rmoustache\; #3 \right\rgroup}
%\newcommand{\setmergeof}[3]{\setmerge\left\rmoustache #1 \middle\rmoustache #2 \middle\lmoustache #3 \right\lmoustache}
if the user still cares about the Topbloke patch,
git's merge algorithm will DTRT when trying to re-apply the changes.
+\item[ $\displaystyle \stmtmergeof{L}{M}{R} $ ]
+The proper results of a merge. Formally,
+where $L$, $M$ and $R$ are statements:
+
+$$
+ \stmtmergeof{L}{M}{R}
+ \equiv
+ \begin{cases}
+ (L \land R) : & \true \\
+ (\neg L \land \neg R) : & \false \\
+ \text{otherwise} : & \neg M
+ \end{cases}
+$$
+
+May also be used where $L$, $M$ and $R$ are sets, in which case
+$$
+ \setmergeof{L}{M}{R}
+ =
+ \left\{
+ \;
+ D \; \middle| \;
+ \setmergeof{ D \in L }{ D \in M }{ D \in R }
+ \;
+ \right\}
+$$
+
\item[ $\displaystyle \commitmergeof{C}{L}{M}{R} $ ]
The contents of a git merge result: