I'm editing the sidebar on one of our websites, and shuffling some entries. It involves moving some entries in/out of a dropdown and contextual sidebars, in/out of submenus, etc. It sounds a little tedious but overall pretty trivial, right?

This is day three.
I learned React+Redux from scratch (and rebuilt the latter for fun) in twice that long.

In my defense, I've been working on other tasks (see: Alerts), but mostly because I'd rather gouge my freaking eyes out than continue on this one.

Everything that could be wrong about this is. Everything that could be over-engineered is. Everything that could be written worse... can't, actually; it's awful.

Major grievances:
1) The sidebars (yes, there are several) are spread across a ridiculous number of folders. I stopped counting at 20.
2) Instead of icon fonts, this uses multiple images for entry states.
3) The image filenames don't match the menu entry names. at all. ("sb_gifts.png" -> orders); active filenames are e.g. "sb_giftsactive.png"
4) The actions don't match the menu entry names.
5) Menu state is handled within the root application controller, and doesn't use bools, but strings. (and these state flags never seem to get reset anywhere...)
6) These strings are used to construct the image filenames within the sidebar views/partials.
7) Sometimes access restrictions (employee, manager, etc.) are around the individual menu entries, sometimes they're around a partial include, meaning it's extremely difficult to determine which menu entries/sections/subsections are permission-locked without digging through everything.
8) Within different conditionals there are duplicate blocks markup, with duplicate includes, that end up render different partials/markup due to different state.
9) There are parent tags outside of includes, such as `<ul>#{render 'horrific-eye-stabbing'}</ul>`
10) The markup differs per location: sometimes it's a huge blob of non-semantic filthiness, sometimes it's a simple div+span. Example filth: section->p->a->(img,span) ... per menu entry.
11) In some places, the markup is broken, e.g. `<li><u>...</li></u>`
12) In other places, markup is used for layout adjustments, such as an single &nbsp; nested within several divs adorned with lots of styles/classes.
13) Per-device layouts are handled, not within separate views, but by conditionally enabling/disabling swaths of markup, e.g. (if is_cordova_session?).
14) `is_cordova_session` in particular is stored within a cookie that does not expire, and within your user session. disabling it is annoying and very non-obvious. It can get set whether or not you're using cordova.
15) There are virtually no stylesheets; almost everything is inline (but of course not actually everything), which makes for fun layout debugging.
16) Some of the markup (with inline styling, no less) is generated within a goddamn controller.
17) The markup does use css classes, but it's predominately not for actual styling: they're used to pick out elements within unit tests. An example class name: "hide-for-medium-down"; and no, I can't figure out what it means, even when looking at the tests that use it. There are no styles attached to that particular class.
18) The tests have not been updated for three years, and that last update was an rspec version bump.
19) Mixed tabs and spaces, with mixed indentation level (given spaces, it's sometimes 2, 4, 4, 5, or 6, and sometimes one of those levels consistently, plus an extra space thereafter.)
20) Intentional assignment within conditionals (`if var=possibly_nil_return_value()`)
21) hardcoded (and occasionally incorrect) values/urls.

... and last but not least:
22) Adding a new "menu sections unit" (I still haven't determined what the crap that means) requires changing two constants and writing a goddamn database migration.

I'm not even including minor annoyances like non-enclosed ternaries, poor naming conventions, commented out code, highly inefficient code, a 512-character regex (at least it's even, right?), etc.

just.

what the _fuck_

Who knew a sidebar could be so utterly convoluted?

Whomever invented regular expressions was both a genius and a madman.

Man, people have the weirdest fetishes for using the most unreadable acrobatic shell garbage you have ever seen.

Some StackOverflow answers are hilarious, like the question could be something like "how do I capture regex groups and put them in a variable array?".

The answer would be some multiline command using every goddamn character possible, no indentation, no spaces to make sense of the pieces.

Regex in unix is an unholy mess. You have sed (with its modes), awk, grep (and grep -P), egrep.
I'll take js regex anytime of the day.

And everytime you need to do one simple single goddamn thing, each time it's a different broken ass syntax.

The resulting command that you end up picking is something that you'll probably forget in the next hour.

I like a good challenge, but readability is important too.

Or maybe I have very rudimentary shell skills.