How do I search for the contents of a register without typing the pattern manually?

Explanation

Vim's search register (@/) holds the current search pattern — the same one used by n, N, *, and hlsearch highlighting. You can write to it directly with :let @/ = @a, making any register's contents the active search pattern. This is especially useful when you've yanked a complex string, a regex, or a word with special characters that would be painful to type into /.

How it works

• @/ — the search register; setting it is equivalent to running a /pattern<CR> search, but without triggering a cursor jump
• @a — the contents of named register a (or use @0 for the last yank, @" for the unnamed register)
• After running the command, n/N navigate matches and hlsearch highlights them, exactly as after a normal search

Example

You yanked a long function name into register a with "ayiw. Instead of typing:

/myVeryLongFunctionName<CR>

Simply run:

:let @/ = @a

Now n jumps to the next occurrence, N goes backward, and the matches are highlighted — no cursor movement happens on the assignment itself.

Tips

• Use @0 (last yank register) for a quick workflow: yiw then :let @/ = @0 to search for the yanked word
• You can set @/ to any Vim regex: :let @/ = 'foo\|bar' searches for foo or bar
• Combine with set hlsearch — after assignment, matches light up without a / search
• To clear the search highlight without forgetting the pattern, use :nohl
• This is the cleanest way to search for text containing forward slashes, which would otherwise need escaping in /