#+TITLE: 2023 了, 试试 emacs 29
#+DATE: <2023-01-02 一>
#+OPTIONS: toc:1

2023 了, 元旦假期, 想体验一下新版本的 emacs, 我已经眼馋好久了
发行版还没提供? 自己编译, 而且自己编译可以自定义一些选项, 比如 pgtk
完整的新特性去看 =etc/NEWS= (btw, =emacs-news-mode= 也是新加的)

* build emacs (with musl?)
[[https://zhuanlan.zhihu.com/p/172518559][gcc 参数来源]]
#+BEGIN_SRC sh
./configure CFLAGS="-march=native -O3 -pipe -finline-functions -fno-math-errno -fno-trapping-math -fgraphite-identity -floop-nest-optimize -ftree-loop-distribution -fno-semantic-interposition -fipa-pta -fno-plt" \
            --with-x=no \
            --with-gpm=no \
            --with-pgtk \
            --with-native-compilation \
            --with-json \
            --with-sqlite3 \
            --with-tree-sitter \
            --with-webp \
            --with-gif
#+END_SRC

@@html:<details>@@
@@html:<summary>but what about musl? (CC=musl-gcc)</summary>@@
#+BEGIN_SRC text
checking whether GTK compiles... no
configure: error: Gtk+ wanted, but it does not compile, see config.log.
#+END_SRC

#+BEGIN_SRC text
<dongdigua> hello, I tried to build emacs with musl-gcc, but it says:
<dongdigua> error: Gtk+ wanted, but it does not compile
<dongdigua> it can build using normal gcc
<dongdigua> and it can build on voidlinux
<sam_> dalias: <3
<dongdigua> o_O
<sam_> dongdigua: you'd have to share some logs in full for us to help at all
<sam_> but you'd be better off asking your Linux distribution
<dongdigua> it is mostly `ld: error: unable to find library`
<dongdigua> sam_: so i think it is probably something about the wrapper script
<heat> musl-gcc (does not? should not?) pick up on host libraries because they
       were built against glibc and not musl
<heat> so musl-gcc will not pick up on those
<heat> or at least they will just not work and will break configure
<dongdigua> heat: so I should use those libraries that is built on musl?
<dongdigua> like voidlinux I mentioned above
<heat> yes
<dongdigua> ok
ERC>
#+END_SRC
@@html:</details>@@

* dump?
现在开启 =native-comp= 时 =dump-emacs-portable= 没法弄, 见: [[https://emacs-china.org/t/emacs-29-with-native-comp-dump/22762][emacs china: emacs 29 with native-comp 无法 dump]]
试着不开 native-comp dump 了一下, 也就加快了 0.2 s, 而且有各种问题, 算啦算啦

* 我 有切身体会/还没体验但是认为很不错 的新特性
** [[https://emacs-china.org/t/emacs/19806]["真" 背景透明]]
这是我提前了解到的第一个 emacs29 特性, [[https://www.bilibili.com/video/BV1ca41127KY][evan 的视频]]
但是有透明通道的图片不会跟着透明

** [[https://www.emacswiki.org/emacs/SmoothScrolling][平滑滚动]]
搜索 emacs29 蹦出来的

** elisp-byte-compile-file

** emoji 😀

** package-vc-install
但是 =package-report-bug= 有点迷惑

* 我认为早就该加了但是现在才加入
** erc-sasl
我编译的时候偶然发现的 =erc-sasl.el=
我去! 终于有 sasl 了! 不用第三方的 [[https://github.com/emacs-circe/circe][circe]] 了!
*只需要 customize =erc-modules= 加入 sasl, 然后用 =erc-tls= 就成了*
这个最早 12 年就有人提出了 ([[https://lists.gnu.org/archive/html/erc-discuss/2012-02/msg00001.html][注释里给的链接]])

** restart-emacs

** package-update(-all)

* 29.1
- =use-package=
- more =*-ts-mode=