There is a difference between the expansion of % and Ctrl-R % on the
command line.
I use Dropbox to keep a number of my configuration files, including
my ~/.vim directory, synchronized between various machines running
Linux and Windows.
Today I discovered this file in the ~/Dropbox/vimfiles of a machine
named toucan which is running Fedora 14:
filetype (toucan's conflicted copy 2014-03-01).vim
Using a GUI file manager, I opened this file with gvim. I made some
changes to it, then tried comparing the changed buffer with the
copy on disk with this command which I have used for years:
:w !diff "%" -
The result surprised me.
diff: Dropbox/vimfiles/filetype \(toucan's conflicted copy
2014-03-01\).vim: No such file or directory
shell returned 2
However, if instead I typed
:w !diff "^R%" -
where ^R means Ctrl-R, the command became
:w !diff "Dropbox/vimfiles/filetype (toucan's conflicted copy
2014-03-01).vim" -
and worked fine.
So, Ctrl-R % expands to just the file name, but % alone expands with
parenthesis escaped by backslashes. This latter behavior seems like
a bug.
I was using Vim 7.4.192 on Fedora 14.
Regards,
Gary
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