はじめに
いつにまにか Emacs 25.1 がリリースされていたので，取り敢えずビルドします．
MSYS2 のインストールとアップデートは，済んでいるものとします．以前の環境からアップデートしたときに，msys2-launcher がインストールされなくて，起動するのに悩みました(>_<）今は，バッチファイルから起動しないのですね．
インストールするのに，chuntaro/NTEmacs64とemacs-w64を参考にしました．これらのサイトの方が詳しいです．また，パッチはrzl24oziさんのを使いました．いつもありがとうございます．
インストール
下準備
今回は，cmigemo を組込みことにしたので，取り敢えずインストールします．
mingw64.exe を起動して作業する．
$ curl -O http://iij.dl.osdn.jp/nkf/64158/nkf-2.1.4.tar.gz
$ tar zxvf nkf-2.1.4.tar.gz
$ cd nkf-2.1.4
$ make
$ make install
$ git clone https://github.com/koron/cmigemo.git
$ cd cmigemo
$ ./configure --prefix=/usr/local
$ make mingw-all
$ make mingw-install
ソースファイルの準備
Emacs のソースとパッチを当てる．ここでは，~/Download/src で作業しています．
$ curl -O http://ftp.gnu.org/gnu/emacs/emacs-25.1.tar.xz
$ curl -O https://gist.githubusercontent.com/rzl24ozi/bceff92df3359267657b/raw/13fd97b85d752c8744499727dd170f0223e040b4/emacs-25.1-image-fit.diff
$ curl -O https://gist.githubusercontent.com/rzl24ozi/8c20b904c9f5e588ba99/raw/0d5694e22a70cb3ea639f27013e4134c9772f1ed/emacs-25.1-w32-ime.diff
$ curl -O https://gist.githubusercontent.com/rzl24ozi/6b1207d20970737f44c7/raw/313b2497dc7ddfc14735e56e0013fd7a75536af7/emacs-25.1-cmigemo.diff
$ tar Jxvf emacs-25.1.tar.xz
$ cd emacs-25.1
$ patch -p0 < ../emacs-25.1-w32-ime.diff
$ patch -p0 < ../emacs-25.1-image-fit.diff
$ patch -p0 < ../emacs-25.1-cmigemo.diff
ビルド
インストール先は，prefix で変更します．ここでは，D:\Programs\emacs-25.1 にしています．
$ ./autogen.sh
$ CFLAGS='-Ofast -march=corei7 -mtune=corei7' CPPFLAGS=-I/usr/local/include ./configure --without-pop --without-imagemagick --without-dbus
$ make
$ make install prefix=/d/Programs/emacs-25.1
DLL のコピー
起動できるように必要な DLL をコピーします．(コピペしやすいように，プロンプトは除いていることもあります)
emacs
cp /mingw64/bin/{libwinpthread-*.dll,libXpm-noX*.dll,libdbus-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libgomp-*.dll,libgcc_s_seh-*.dll,libglib-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libintl-*.dll,libiconv-*.dll,libgobject-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libffi-*.dll,libgdk_pixbuf-*.dll,libgio-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libgmodule-*.dll,zlib*.dll,librsvg-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libcairo-*.dll,libcroco-*.dll,libpango-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libpangocairo-*.dll,libxml2-*.dll,libfontconfig-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libfreetype-*.dll,libpixman-*.dll,libpng*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libpangoft*.dll,libpangowin32-*.dll,liblzma-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libexpat-*.dll,libharfbuzz-*.dll,libgnutls-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libgnutlsxx-*.dll,libtiff-*.dll,libtiffxx-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libjpeg-*.dll,libgif-*.dll,libbz2-*.dll,libjbig-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libgmp-*.dll,libhogweed-*.dll,libnettle-*.dll} /d/Programs/emacs-25.1/bin
cp /mingw64/bin/{libidn-*.dll,libp11-kit-*.dll,libtasn1-*.dll} /d/Programs/emacs-25.1/bin
migemo
$ cp /usr/local/bin/migemo.dll /d/Programs/emacs-25.1/bin/
$ mkdir -p /d/Programs/emacs-25.1/share/emacs/25.1/etc/migemo/utf-8
$ cp /usr/local/share/migemo/utf-8/* /d/Programs/emacs-25.1/share/emacs/25.1/etc/migemo/utf-8/
cmigemo.el
ソースファイルの site-lisp に cmigemo.el があるので，load-path の通った場所にコピーする．ここでは，%HOME%\emacs.d\elisp にしています．
(10/10 追記) 修正されたので，下記の作業は不要になりました．
isearch-word が obsolete されたので isearch-regexp-function に変更しますが，emacs-jp/migemoで修正されていたのでそれを取り込みます．
下記の cmigemo.el.diff を %HOME%\emacs.d\elisp に作成します．
$ cd ~/.emacs.d/elsip
$ patch < cmigemo.el.diff
後は，init.el などで，(require 'cmigemo) で使えるようになります．
cmigemo.el.diff
--- cmigemo.el.orig 2016-09-27 12:08:34.026393700 +0900
+++ cmigemo.el 2016-09-29 17:47:18.379048200 +0900
@@ -564,6 +564,10 @@
migemo-dabbrev-pattern)))
(add-hook 'pre-command-hook 'migemo-dabbrev-expand-done)))
+(defsubst migemo--isearch-regexp-function ()
+ (or (bound-and-true-p isearch-regexp-function)
+ (bound-and-true-p isearch-word)))
+
;; Use migemo-{forward,backward} instead of search-{forward,backward}.
(defadvice isearch-search (around migemo-search-ad activate)
"adviced by migemo."
@@ -577,7 +581,7 @@
"adviced by migemo."
(let ((isearch-adjusted isearch-adjusted))
(when (and migemo-isearch-enable-p
- (not isearch-forward) (not isearch-regexp) (not isearch-word))
+ (not isearch-forward) (not isearch-regexp) (not (migemo--isearch-regexp-function)))
;; don't use 'looking-at'
(setq isearch-adjusted t))
ad-do-it))
@@ -612,7 +616,7 @@
(defun isearch-search-fun-migemo ()
"Return default functions to use for the search with migemo."
(cond
- (isearch-word
+ ((migemo--isearch-regexp-function)
(lambda (string &optional bound noerror count)
;; Use lax versions to not fail at the end of the word while
;; the user adds and removes characters in the search string
@@ -625,8 +629,8 @@
(length (funcall state-string-func (car isearch-cmds))))))))
(funcall
(if isearch-forward #'re-search-forward #'re-search-backward)
- (if (functionp isearch-word)
- (funcall isearch-word string lax)
+ (if (functionp (migemo--isearch-regexp-function))
+ (funcall (migemo--isearch-regexp-function) string lax)
(word-search-regexp string lax))
bound noerror count))))
((and isearch-regexp isearch-regexp-lax-whitespace
@@ -718,7 +722,7 @@
(when migemo-emacs21p
(put-text-property 0 (length str) 'face migemo-message-prefix-face str))
(when (and migemo-isearch-enable-p
- (not (or isearch-regexp isearch-word)))
+ (not (or isearch-regexp (migemo--isearch-regexp-function))))
(setq ad-return-value (concat str " " ret)))))
;;;; for isearch-lazy-highlight (Emacs 21)
@@ -732,7 +736,7 @@
activate)
"adviced by migemo"
(if (and migemo-isearch-enable-p
- (not isearch-word)
+ (not (migemo--isearch-regexp-function))
(not isearch-regexp))
(let ((isearch-string (migemo-search-pattern-get isearch-string))
(isearch-regexp t))
@@ -770,7 +774,7 @@
(defun migemo-isearch-toggle-migemo ()
"Toggle migemo mode in isearch."
(interactive)
- (unless (or isearch-regexp isearch-word)
+ (unless (or isearch-regexp (migemo--isearch-regexp-function))
(discard-input)
(setq migemo-isearch-enable-p (not migemo-isearch-enable-p)))
(when (fboundp 'isearch-lazy-highlight-new-loop)