Zsh help command (like bash)
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By default, the zsh help command does not show help for builtins. Add it:
autoload -Uz run-help
unalias run-help &>/dev/null
alias help='PAGER="less -FX" run-help'
Example usage:
% help fg
fg [ job ... ]
job ...
Bring each specified job in turn to the foreground. If no job
is specified, resume the current job.