~ / insert / doorslesson 1/7

Doors into Insert mode: i, a, I, A, o, O

Six ways in, each one putting the cursor right where you want to type.

?how it works

Every edit starts with choosing a door into Insert mode. Each one drops the cursor in a different spot, so picking the right door means you don't have to move first.

i inserts before the cursor, a appends after it.
I inserts at the start of the line's text (it skips the indent), A appends at the very end.
o opens a new line below, O opens one above.

A and I are the big wins: wherever the cursor is on a line, one key takes you to its end or its start, ready to type. A classic slip is $i, which lands before the last character. A is shorter and lands after it.

gi is the door back in: it starts Insert mode where you last left it. Handy after you hopped away to read something.

<Esc> takes you back to Normal mode, and the cursor steps one character to the left. That's normal, not a bug.

⌨keys

`i`	insert before the cursor
`a`	append after the cursor
`I`	insert before the first non-blank of the line
`A`	append at the end of the line
`o`	open a new line below and insert
`O`	open a new line above and insert
`gi`	insert where Insert mode was last stopped
`<Esc>`	leave Insert mode

Nin neovim

Neovim turns autoindent on by default (classic Vim doesn't), so a line opened with o or O starts with the same indent as the line you were on.

4 drills

Fill the gap with a: A letter is missing right after the cursor. Add it with a, then <Esc>.
Finish the line with A: Add the missing character(s) at the end of the line with A.
Prefix the line with I: Add the marker at the start of the line's text, after the indent, using I.
Open a line with o or O: Add the missing line from the target. Use o to open a line below the cursor, or O for one above. The indent comes for free.

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