#+TITLE: (Editor) Cheatsheet
#+DATE: <2022-06-13 一>


* VIM
:PROPERTIES:
:CUSTOM_ID:vim:
:END:
** deletion
| key | usage                 |
|-----+-----------------------|
| D   | delete to end of line |

** edit
| key            | usage            |
|----------------+------------------|
| u/C-r          | 撤销/重做        |
| c i {          | change inside {} |
| "{register}y/p | 向/从寄存器拷贝  |

** movement
| key      | usage                      |
|----------+----------------------------|
| w/e      | 下一个单词/单词尾          |
| b        | 单词头                     |
| H/M/L    | 当前页面可见顶部/中间/底部 |
| C-u(f)/d | 上/下翻页                  |
| %        | 到对应括号                 |
| {}       | 段落跳转                   |
| g ;      | goto last change           |
| g */#    | 正/反查找光标下的词        |
| g d/D    | 跳转到本地/全局定义        |

** file/split
| key         | usage        |
|-------------+--------------|
| :n/:N       | 文件之间切换 |
| :b          | 切换到文件   |
| C-w h/j/k/l | 切换分屏窗口 |
| :%!xxd (-r) | edit in hex  |

* EMACS
:PROPERTIES:
:CUSTOM_ID:emacs:
:END:
** org
| key         | usage                         |
|-------------+-------------------------------|
| C-c \vbar   | 创建表格                      |
| C-c C-e     | 导出 HTML                     |
| C-c C-x C-v | toggle render images          |
| C-c C-l     | 编辑链接                      |
| C-c C-,     | org-insert-structure-template |
| C-c C-x p   | org-set-property              |

https://orgmode.org/worg/dev/org-export-reference.html

*Bold* /italic/ _underline_ +strikethrough+ ~code~ =verbatim=

** normal
| key     | usage               |
|---------+---------------------|
| M-%     | 替换                |
| M-;     | 区域切换注释        |
| C-x C-; | 行切换注释          |
| C-y     | paste to minibuffer |
| M-&/!   | async/shell command |
| C-M-\   | indent-region       |
| M-y     | past previous       |
| C-x ^   | enlarge-window      |

https://www.masteringemacs.org/article/fun-games-in-emacs

** eww/elpher (essensial)
| key   | usage                            |
|-------+----------------------------------|
| TAB   | shr-next-link/elpher-next-link   |
| d     | eww-download/elpher-download     |
| g     | eww-reload/elpher-go             |
| G     | eww                              |
| l     | eww-back-url                     |
| \circ | elpher-back-url                  |
| &     | eww-browse-with-external-browser |
| w     | eww-copy-page-url                |
| C/c   | elpher-copy-current/link-url     |
| v     | eww-view-page-source             |
| .     | elpher-view-raw                  |

* Git
:PROPERTIES:
:CUSTOM_ID:git:
:END:
Git 能离线使用只是个传说, 你仍然需要联网搜索该用哪个命令传什么参数
magic is useful
#+BEGIN_SRC shell
git log --stat | perl -ne 'END { print $c } $c += $1 if /(\d+) insertions/;'
git log --pretty=tformat: --numstat | awk '{ add += $1; subs += $2; loc += $1 - $2 } END { printf "added lines: %s, removed lines: %s, total lines: %s\n", add, subs, loc }'

git show :1:file  # 1common 2ours 3theirs

git rebase --committer-date-is-author-date
#+END_SRC

* Shell
:PROPERTIES:
:CUSTOM_ID:shell:
:END:
** Fish
| key          | usage                      |
|--------------+----------------------------|
| M-Left/Right | jump world, or prevd/nextd |
| M-s          | sudo the last command      |
| M-w          | what is this               |

* ffmpeg
:PROPERTIES:
:CUSTOM_ID:ffmpeg:
:END:
#+BEGIN_SRC shell
ffmpeg -hwaccel qsv -i IN -ss 5:00 -t 30:00 -s 720x480 -r 30 -an -threads 2 OUT
#+END_SRC