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#+TITLE: Interactive Reverse Variable Search in Emacs
#+DATE: 2020-09-16T00:04:06-04:00
#+DRAFT: true
#+DESCRIPTION:
#+TAGS[]: emacs
#+KEYWORDS[]:
#+SLUG:
#+SUMMARY:
I don't remember where I read it, but while I was first learning about
how elisp works, someone had mentioned the fact that it could perform
reverse variable searches. I remember thinking that idea was
incredibly interesting.
I'd tried looking that capability at the time and coming up
short.v Every link I'd looked at only talked about reverse I-search and
xref capabilities. I pretty soon after forgot about it.
The thought crossed my mind again today, out of the blue, and I
decided that I would once and for all get to the bottom of it. I
stumbled across the answer in [[https://github.com/lepisma/til-emacs][this]] github repo which contains various
Emacs tips. Apparently this reverse variable search is performed
through the =apropos-value= command. I had to say, I was quite
disappointed with the result.
The command provides a lackluster interface to say the least, with the
only input being the ability to enter a search string in the
minibuffer. It's results are also fairly disappointing, often not
even returning a result, with the error message =condition-case:
Apparently circular structure being printed=. When the results do
appear, they are usually hard to understand, with the search term
being deep in a list.
To quench my thirst for an interactive reverse variable lookup that
provided accurate results, I decided to make my own. I called it
[[https://github.com/dantecatalfamo/helm-atoms][helm-atoms]].
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