---- atl_case.md ----
Here's some text in alternating case:

> mOnGoDb iS WeBsCaLe!

Put your cursor on "this" and use ciw to change inside the word to "it"

---> Why do this?
     Why do it?

Put your cursor on "would" and use daw to delete a word. Hit "." to repeat.

---> Why would you want to do this?
     Why do this?

Put your cursor on the second sentence and use cas to change the entire sentence.

---> Why do this? Well, there are a few reasons. When someone writes something ...
     Why do this? I can tell you. When someone writes something ...

Or just use dap to delete the enitre paragraph.

--> Why to do this? Well, there are a few reasons. When someone
writes something that you think is ridiculous, you might want to repeat it back
to them in this text style to mock them.

---- alt_case.lua ----

--[[
    Use ci` below to change `input` to `str`.
--> Converts `input` to alternating case, AKA "spongebob case".

--> Use yi[ or yi] to yank everything inside square brackets.
    Check what you yanked by using :reg "
]]
function alt_case(str)
  local uppered = string.upper(str)
  local lowered = string.lower(str)

  local substrs = {}

  for i=1, string.len(str) do
    local is_even = i % 2 == 0
    local source = is_even and uppered or lowered
    substrs[#substrs+1] = string.sub(source, i, i)
  end

  local result = table.concat(substrs)

  return result
end

-- use ca' below to change '?' to "!"
extra = '?'
-- use ci" to change "lorem ipsum dolor" to "hello world"
result = alt_case("lorem ipsum dolor")

-- use cib or ci( / ci) to change inside the parens to input_1
result = alt_case("hello world" .. extra)

-- use yi{ or yi} to yank inside the braces
input_2 = table.concat({"whatever", "we" "want"})

values = {"whatever", "we" "want"}
i = #results
-- use ci[ or ci] to change the square brackets to [i]
values[#values + 1]

-- use va{ or va} to select the outer braces
phrases = {
  "hello",
  "goodbye",
  -- move to the opening brace, then vi{ or vi} to select inside the inner braces
  table.concat({"whatever", "we" "want"})
}
```

---- section.html ----

<section>
    <!-- use ci< or ci> to change the img tag to a br tag -->
    <img src="..." />
    <!-- use da< or da> to delete the entire img tag -->
    <img src="..." />
    <!-- use cit to change the text inside the div tag -->
    <div>TODO: add some text here...</div>
    <!-- use dat to delete the entire div tag -->
    <div>TODO: add some text here...</div>
</section>