We want to use tmux in MSYS2 in ConEmu. There is also connector, but when you run it, you cannot run interactive programs without winpty. (They are great programs)
Then, ConEmu has a function that you can make panes and tabs.
Therefore, I made a program which use this function, and you can use it easily in MSYS2.
Make a tab.
$ cemx
Make a right pane.
$ cemx s
Make an under pane.
$ cemx sV
Please see other examples in ConEmu official website
$ git clone git://github.com/TRSasasusu/cemx.git
$ cd cemx
$ make
Then, set cemx.exe in your PATH. (e.g. /usr/local/bin)
cemx.exe can find your bash.exe automatically from PATH.
Moreover, you can write the dot-file, .cemxrc in the same directory as cemx.exe
e.g.
bash:c:\msys64\usr\bin\bash.exe
GNU General Public License v3.0