When I try to open a file in Vim (Linux) for editing, when I press TAB, Vim autocompletes filename only with filenames from the current directory. However, having searched on the Web, I suppose that from version 7 Vim should support bash-like filename autocompletion using filenames from all the directories in the search path.
Say, there is a file file1 in a directory dir1 (which directory is also in the environment variable PATH).
I type the following commands in Vim:
set path=/dir1
set wildmode=list:longest
And then, when I type:
:e fil<TAB>
The filename is not autocompleted. How to enable this feature in Vim?
Tab-completion works. You just expect it to do something it is not actually supposed to do.
:e[dit] and its siblings (:sp[lit], :vs[plit], :tabe[dit]) don't use the path option at all, no matter what version of Vim you have.
Use :fin[d] fil<Tab> instead (and :sf[ind], :vert sf[ind], :tabf[ind]).
Use set path=/dir1/** to make :find recursive.
See :help 'path' and :help :find.
edit
It is generally considered "good practice" to start Vim from the root of your project:
$ cd /path/to/project
$ vim somefile
The main advantage being that it sets Vim's "current directory" to a usable value that allows you to browse your project relatively easily or use external programs on your project in a clean and intuitive way.