X-Git-Url: https://code.delx.au/gnu-emacs-elpa/blobdiff_plain/3f14abc2a5d72bdc9836b34ddb5e0ab2475a0bd4..b001e91a8c3bacb24b329c04f5feba419630b387:/company-capf.el

diff --git a/company-capf.el b/company-capf.el
index e27ae7a46..0b88e2ba4 100644
--- a/company-capf.el
+++ b/company-capf.el
@@ -1,6 +1,6 @@
-;;; company-capf.el --- company-mode completion-at-point-functions back-end -*- lexical-binding: t -*-
+;;; company-capf.el --- company-mode completion-at-point-functions backend -*- lexical-binding: t -*-
 
-;; Copyright (C) 2013-2014  Free Software Foundation, Inc.
+;; Copyright (C) 2013-2015  Free Software Foundation, Inc.
 
 ;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
 
@@ -28,7 +28,20 @@
 (require 'company)
 (require 'cl-lib)
 
+(defvar company--capf-cache nil)
+
 (defun company--capf-data ()
+  (let ((cache company--capf-cache))
+    (if (and (equal (current-buffer) (car cache))
+             (equal (point) (car (setq cache (cdr cache))))
+             (equal (buffer-chars-modified-tick) (car (setq cache (cdr cache)))))
+        (cadr cache)
+      (let ((data (company--capf-data-real)))
+        (setq company--capf-cache
+              (list (current-buffer) (point) (buffer-chars-modified-tick) data))
+        data))))
+
+(defun company--capf-data-real ()
   (cl-letf* (((default-value 'completion-at-point-functions)
               ;; Ignore tags-completion-at-point-function because it subverts
               ;; company-etags in the default value of company-backends, where
@@ -38,10 +51,10 @@
              (data (run-hook-wrapped 'completion-at-point-functions
                                      ;; Ignore misbehaving functions.
                                      #'completion--capf-wrapper 'optimist)))
-    (when (and (consp (cdr data)) (numberp (nth 1 data))) data)))
+    (when (and (consp (cdr data)) (integer-or-marker-p (nth 1 data))) data)))
 
 (defun company-capf (command &optional arg &rest _args)
-  "`company-mode' back-end using `completion-at-point-functions'."
+  "`company-mode' backend using `completion-at-point-functions'."
   (interactive (list 'interactive))
   (pcase command
     (`interactive (company-begin-backend 'company-capf))
@@ -125,9 +138,14 @@
     (`init nil)      ;Don't bother: plenty of other ways to initialize the code.
     (`post-completion
      (let* ((res (company--capf-data))
-            (exit-function (plist-get (nthcdr 4 res) :exit-function)))
+            (exit-function (plist-get (nthcdr 4 res) :exit-function))
+            (table (nth 3 res))
+            (pred (plist-get (nthcdr 4 res) :predicate)))
        (if exit-function
-           (funcall exit-function arg 'finished))))
+           ;; Follow the example of `completion--done'.
+           (funcall exit-function arg
+                    (if (eq (try-completion arg table pred) t)
+                        'finished 'sole)))))
     ))
 
 (provide 'company-capf)