history

Sets sane history options.

The history is set to be saved in the ${ZDOTDIR:-${HOME}}/.zhistory file.

Zsh options

BANG_HIST performs csh-style '!' expansion.
SHARE_HISTORY causes all terminals to share the same history 'session'.
HIST_IGNORE_DUPS does not enter immediate duplicates into the history.
HIST_IGNORE_ALL_DUPS removes older command from the history if a duplicate is to be added.
HIST_IGNORE_SPACE removes commands from the history that begin with a space.
HIST_SAVE_NO_DUPS ommits older commands that duplicate newer ones when saving.
HIST_VERIFY doesn't execute the command directly upon history expansion.