From c5669776b1abec979249ff9218ba8251500fc704 Mon Sep 17 00:00:00 2001
From: Nikolay Kudryavtsev <nikolay.kudryavtsev@gmail.com>
Date: Tue, 3 Jan 2017 01:21:19 +0300
Subject: [PATCH] Prevent package-install from asking to save buffers

 * lisp/emacs-lisp/bytecomp.el (byte-recompile-directory): New argument
 `ignore-modified-buffers' that prevents `save-some-buffers' from getting
 called.
 * doc/lispref/compile.texi: Documented `ignore-modified-buffers' argument
 of `byte-recompile-directory'.
 * lisp/emacs-lisp/package.el (package--compile): Use
 `ignore-modified-buffers' when calling `byte-recompile-directory'.
---
 doc/lispref/compile.texi    |  6 +++++-
 lisp/emacs-lisp/bytecomp.el | 10 +++++++---
 lisp/emacs-lisp/package.el  |  2 +-
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/doc/lispref/compile.texi b/doc/lispref/compile.texi
index b1cc04b..239d7ee 100644
--- a/doc/lispref/compile.texi
+++ b/doc/lispref/compile.texi
@@ -198,7 +198,7 @@ Compilation Functions
 @end example
 @end deffn

-@deffn Command byte-recompile-directory directory &optional flag force
+@deffn Command byte-recompile-directory directory &optional flag force ignore-modified-buffers
 @cindex library compilation
 This command recompiles every @samp{.el} file in @var{directory} (or
 its subdirectories) that needs recompilation.  A file needs
@@ -217,6 +217,10 @@ Compilation Functions
 If @var{force} is non-@code{nil}, this command recompiles every
 @samp{.el} file that has a @samp{.elc} file.

+If @var{ignore-modified-buffers} is non-@code{nil}, this command avoids
+saving modified buffers before compilation. Otherwise
+@code{save-some-buffers} is called.
+
 The returned value is unpredictable.
 @end deffn

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 63be7e2..fda25ae 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1621,7 +1621,7 @@ byte-force-recompile
   (byte-recompile-directory directory nil t))

 ;;;###autoload
-(defun byte-recompile-directory (directory &optional arg force)
+(defun byte-recompile-directory (directory &optional arg force ignore-modified-buffers)
   "Recompile every `.el' file in DIRECTORY that needs recompilation.
 This happens when a `.elc' file exists but is older than the `.el' file.
 Files in subdirectories of DIRECTORY are processed also.
@@ -1634,12 +1634,16 @@ byte-recompile-directory
 before scanning it.

 If the third argument FORCE is non-nil, recompile every `.el' file
-that already has a `.elc' file."
+that already has a `.elc' file.
+
+If forth argument IGNORE-MODIFIED-BUFFERS is non-nil, do not try to save
+modified buffers before compilation."
   (interactive "DByte recompile directory: \nP")
   (if arg (setq arg (prefix-numeric-value arg)))
   (if noninteractive
       nil
-    (save-some-buffers)
+    (when (not ignore-modified-buffers)
+        (save-some-buffers))
     (force-mode-line-update))
   (with-current-buffer (get-buffer-create byte-compile-log-buffer)
     (setq default-directory (expand-file-name directory))
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 6728f1b..0851c5e 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -946,7 +946,7 @@ package--compile
   (let ((warning-minimum-level :error)
         (save-silently inhibit-message)
         (load-path load-path))
-    (byte-recompile-directory (package-desc-dir pkg-desc) 0 t)))
+    (byte-recompile-directory (package-desc-dir pkg-desc) 0 t t)))

 ;;;; Inferring package from current buffer
 (defun package-read-from-string (str)
--
2.10.2.windows.1