Tip 33: Insert the Current Word at the Command Prompt

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• <C-r><C-w>: mapping copies the word under the cursor and inserts it at the command-line prompt.
• <C-r><C-a>: mapping copies the WORD under the cursor and inserts it at the command-line prompt.
• *: equivalent to /\<<C-r><C-w>\><CR>

Example:

Application: place your cursor on a Vim script, and use :help <C-r><C-w> to look up the documentation for that setting.

References:

# If you open the file in vim,
# then you can \"ayy@a the next line to execute the vim command: 
:h c_CTRL-R_CTRL-W