start of package completion in GoInstall and GoTest see #1

Author: Blackrush

ftplugin/go/install.vim

@@ -2,7 +2,23 @@ if exists("b:did_ftplugin_go_install")
 	finish
 endif
 
-command! -buffer -nargs=1 GoInstall call s:GoInstall(@%, <f-args>)
+function! GocodeCompletePkg(arg, cmd, index)
+	let s:base=DirName(@%)
+	let s:dirs=filter(split(globpath(s:base, a:arg.'*'), '\n'), 'isdirectory(v:val)')
+	let s:ndirs=len(s:dirs)
+
+	if s:ndirs <= 0
+		return ''
+	elseif s:ndirs == 1
+		let s:matched=s:dirs[0]
+	else
+		let s:matched=s:dirs[0] " TODO select the next match
+	endif
+
+	return substitute(s:matched, s:base.'/', '', '').'/' " add a trailing / to quickly match a child
+endfunction
+
+command! -buffer -nargs=1 -complete=custom,GocodeCompletePkg GoInstall call s:GoInstall(@%, <f-args>)
 function! s:GoInstall(file, relpkg)
 	let pkg=GoRelPkg(a:file, a:relpkg)
 	if pkg != -1
@@ -17,7 +33,7 @@ function! s:GoInstall(file, relpkg)
 	endif
 endfunction
 
-command! -buffer -nargs=1 GoTest call s:GoTest(@%, <f-args>)
+command! -buffer -nargs=1 -complete=custom,GocodeCompletePkg GoTest call s:GoTest(@%, <f-args>)
 function! s:GoTest(file, relpkg)
 	let pkg=GoRelPkg(a:file, a:relpkg)
 	if pkg != -1