How do I specify “the word under the cursor” on VIM's commandline?

Question

I want to write a command that specifies \"the word under the cursor\" in VIM. For instance, let\'s say I have the cursor on a word and I make it appear twice. For instance, i

Answer 1

@user11211 has the most straightforward way to duplicate the word under cursor:

yiwP

yank inner word (moves cursor to start of word), paste (before cursor).

eg. straigh[t]forward ----> straightforwar[d]straightforward

[] is cursor

To elaborate...

You probably want to have the cursor following your duplicated word:

yiwPea

straigh[t]forward ----> straightforwardstraightforward[]

NOTE:

yiw

is yank inner word (without whitespace)

yaw

is yank all word (including trailing whitespace).

yawPea

is therefore duplicate word including whitespace, and position cursor.

straigh[t]forward ----> straightforward straightforward[]