Vim: how to append the content of a variable to a file?

Question

I was wondering: is it possible to write the content of a variable (in my case, the last search) to a file with a command ?

I tried the following:

:echo @/ >> /tmp/foo.txt
:@/w /tmp/foo.txt

But that didn't work. Any idea on what is the correct way to do this?

Answer 1

An alternative solution to romain's proposal is to use the redir command which redirects messages to a file. As described in :help redir ,

The messages which are the output of commands are written to that file, until redirection ends.

To append the contents of the search register, run the following sequence of commands:

redir >> /tmp/foo.txt
echo @/
redir END

This sequence could be turned into a function and/or used as a key mapping.