Add package to cache when autocompleting unimported packages.

Fixes #484.

Author: nsf

autocompletecontext.go

@@ -367,7 +367,9 @@ func (c *auto_complete_context) apropos(file []byte, filename string, cursor int
 	if !ok {
 		var d *decl
 		if ident, ok := cc.expr.(*ast.Ident); ok && g_config.UnimportedPackages {
-			d = resolveKnownPackageIdent(ident.Name, c.current.name, c.current.context)
+			p := resolveKnownPackageIdent(ident.Name, c.current.name, c.current.context)
+			c.pcache[p.name] = p
+			d = p.main
 		}
 		if d == nil {
 			return nil, 0

cursorcontext.go

@@ -422,7 +422,7 @@ func (c *auto_complete_context) deduce_cursor_context(file []byte, cursor int) (
 // package name has nothing to do with package file name, that's why we need to
 // scan the packages. And many of them will have conflicts. Can we make a smart
 // prediction algorithm which will prefer certain packages over another ones?
-func resolveKnownPackageIdent(ident string, filename string, context *package_lookup_context) *decl {
+func resolveKnownPackageIdent(ident string, filename string, context *package_lookup_context) *package_file_cache {
 	importPath, ok := knownPackageIdents[ident]
 	if !ok {
 		return nil
@@ -433,9 +433,9 @@ func resolveKnownPackageIdent(ident string, filename string, context *package_lo
 		return nil
 	}
 
-	p := new_package_file_cache(path, path)
+	p := new_package_file_cache(path, importPath)
 	p.update_cache()
-	return p.main
+	return p
 }
 
 var knownPackageIdents = map[string]string{