Some of my favorites:
these are some of my favorite tools. z is just so darn useful.
For things like what you're doing with z I just use ctrl-r and pull what I want from my shell history.
I guess you don't know what I'm doing with z then ¯\(ツ)/¯
To clarify: Being able to type z followed by a couple of letters, then hitting TAB and getting z to autocomplete on the correct directory based on a combination of frequency and recency is IMHO more convenient than the CTRL-R approach.
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