let override the location of tmux executable.
check tmux executable availability.
I noticed that you get a lot of issues opened stating that vimux doesn't work at all, i.e. any attempt to send text to a tmux pane is basically a noop, rendring the plugin not working/usable. I came across several dev env setups where tmux is not on the PATH and/or have alias for tmux. This contributes to this class of problems. While proposed patch doesn't solve all of those, it at least address this one particular env setup approach and will explicitly warn the user.
Follow up of #146 which addressed comments from @ostera.
Updated the plugin to:
I noticed that you get a lot of issues opened stating that vimux doesn't work at all, i.e. any attempt to send text to a tmux pane is basically a noop, rendring the plugin not working/usable. I came across several dev env setups where tmux is not on the PATH and/or have alias for tmux. This contributes to this class of problems. While proposed patch doesn't solve all of those, it at least address this one particular env setup approach and will explicitly warn the user.
Follow up of #146 which addressed comments from @ostera.