vim is a language

1 Syntax of the language

verb + Noun

e.g. d w ==> delete word

当光标在单词的第一个位置的时候，可以删除整个单词

备注：command is Repeatable and Undoable

repeatable :按. 可以重复上一条命令

undoable:按u可以撤销上一步命令

1.1 Verb

d == Delete 剪切
c == change
>== indent 缩进
v == visually select
y == Yank(copy)
p == paste
z == fold

e.g.

c w == change word 光标在word的第一位置
> j == 当前行和下一行缩进
y w == copy a word

1 与数字合用

nd 删除当前行的下面几行
ny 复制当前行的下面几行

2 z的操作

za # 切换(alternative)折叠状态,只能用在已折叠/未折叠的行
zR # 展开所有折叠
zM # 收缩所有折叠
zfi{ # 折叠光标当前所在的大括号{里面的文本
zfa{ # 折叠光标当前所在的大括号{里面的文本和大括号本身
zfG # 从当前光标所在行开始，折叠到文件尾
zf10j # 从当前光标所在行开始，继续向下折叠10行
zfip # 折叠内部段落

1.2 Nouns in Vim

#### 1 Motions

w == word
b == back
2j == down 2 lines

2 Text Objects

iw == inner word
it == inner tag
i" == inner quotes
ip == inner paragrah
as == a sentence

e.g

di w/"/'/[/(/{/p删除句子内的 word "" 可以直接查词'' () [] {} paragraph里的内容
cit == change inner tag 可用在html中，repeat操作的时候不用在tag中间，即使在tag上面也可以实现

3 Parameterized Text Objects

f,F == "find" the next character
t,T == "find" the next character 跳到target前面一个字符
/ == Search(up to the next match)可以直接查词

2 Tips for mastering the language

2.1 the "dot" command

多用text object(iw rather than w) ciw 《--cw
text objects to motions 多用text object 不得已在用motion
repeat.vim for plugin repeating

2.2 Relative number

应用场景：

如果想要改变当前编辑行数，下面的几行，你需要做数学运算

但是打开relative number 就可以直接定位到当前行下面的行数了，也可以定位到上面的行数

e.g.

c6j == change 6 down 改变下面六行

3 Visual mode is a smell

visual mode 可能会打断repeatibility

vcw ---> 会打断dot visual mode

4 Custom operators(plugins)

### 4.1 Tim Pope plugins

1 surround

e.g

- ds" == delete surround ""

- cs"' == change " to '

- ysiw" == 给词添加""

cs" == 把""变成
ysiw[ == 给word用[]包住

2 Commentary

修改了源vim文件，把gc --> 改成了 cm ，具体就是去～/.vim/vundle/ 中的插件去修改

cml == comment line
cmj == comment current line and next line
cmap == comment a paragraph

4.2 replaceWithRegister

replaceWithRegister --- 让复制粘贴可以repeatable

一般做法：切换到visual mode 选中后复制粘贴一个词

griw === go register inner word

4.3 titlecase

titlecase ---- 可以让text object 首字母大写

e.g.

gti' === go title inner ''把''的单词首字母大写
gtip === 整段

sort-motion ----按字母排序 gem文件
gsip === go sort inner paragraph

system-copy ---另外开辟一个clipborad

e.g.

cpiw => copy word into system clipboard
cpi' => copy inside single quotes to system clipboard
cvi' => paste inside single quotes from system clipboard

sort-motion

gs2j => Sort down two lines (current + 2 below)
gsip => Sort the current paragraphddd
gsii => Sort the current indentation level (requires text-obj-indent plugin)

custom Text object

indent

cmii === comment inner indent
cmai === comment all indent 即使中间还有空的indent

entire

cmae == comment an entire thing 注释整个文档
dae == delete an emtire

line

cil === change inner line

code block

cmar === comment a ruby block