Why it's 2.0? I don't see any really significant changes, or maybe I missed smth...

elwin · on May 7, 2015

tmux is an OpenBSD-influenced project. Those projects' version numbers often progress from N.9 to N+1.0 without having any special significance.

andyl · on May 7, 2015

Maybe because Tmux 2.0 has some breaking changes??

raimue · on May 7, 2015

They broke features between releases before without increasing the major version number.

While trying to use the same .tmux.conf over multiple versions of tmux 1.x, I often had to adapt the config file to settings being renamed or just going away without a deprecation warning beforehand.

postila · on May 7, 2015

like what?

untothebreach · on May 7, 2015

  Incompatible Changes
  ====================

  * The choose-list command has been removed.
  * 'terminal-overrides' is now a server option, not a session option.
  * 'message-limit' is now a server option, not a session option.
  * 'monitor-content' option has been removed.
  * 'pane_start_path' option has been removed.
  * The "info" mechanism which used to (for some commands) provide feedback
    has been removed, and like other commands, they now produce nothing on
    success.