Michael Prokop wrote:
Grml's zshrc [http://grml.org/zsh/] uses 'setopt share_history' by default since ages.
This option is responsible for making the history of one Zsh session available to others "kind-of-immediately". So when sending 'echo foobar' in one terminal, then pressing e.g. <return> in another zsh session of the same user then cursor up will show 'echo foobar' on the command line.
While I personally like the feature and somewhat got used to it it's also one of the most discussed settings of grml-zshrc. It has the potential to do harm, especially if you aren't aware of that feature.
[...]
Any objections against that switch? Happy to hear your {N,}ACKs. :)
ACK for exactly the reason you gave: It violates the principle of least surprise.
Regards, Frank