This plugin provides the :Chmod command and the Chmod() function.
The two of them are interfaces of setfperm() and allow to specify filemodes using formats of chmod(1), especially chmod of GNU Coreutils.
:Chmod +x %- Vim 7.4.1516+
Vim has a function, setfperm(), to modify file permissions, but we've to specify the new file permissions by a string with 9 characters such as 'rwxrwxrwx' or 'rwx-w---x'.
Such a format is human-readable, but this is bothering us when we want to specify file permissions.
Please imagine such a situation that you're writing a script and want to make it executable.
So you need to set executable bits for some classes (owner, group, others, or all?).
What will you do to do that?
Do you use setfperm()?
That function can set specific file permissions, but can't set bits based on the current file permission.
This means that you've to get the current file permissions, set executable bits to them, and call setfperm() with the new file permission.
However, a UNIX command chmod(1) can do it easily using such a format a+x.
Of course I know we can call external commands such as it from Vim using :!{cmd}, but I want such an UX and interface on Vim's cmdline.
This is a very very personal request, maybe anyone doesn't want it, but just I want it.
In conclusion, this is just my hobby!
Use your favorite plugin manager, or use :packadd if you are a Vim8 user.
This plugin is tested using themis.vim.
git clone https://github.com/thinca/vim-themis.git
./vim-themis/bin/themis test/chmod.vimspec