Sentence s, paragraph P in VIM text object

introduction

It has been used for nearly half a year ideaVim 了 , It's time to feed back to the community ~~

vim Most text objects in text objects are easy to understand . This article mainly aims at the sentences and paragraphs which are seldom used and difficult to understand , Show and understand the code .

reference

vim Help document

Text

Here we need to understand their definition first ：

The sentence s

A sentence begins with ‘.’、’!’ perhaps ‘?’ ending and Followed by a line break 、 Spaces or tabs . End punctuation
Any number of closed parentheses and quotation marks can appear between and white space characters : ‘)’、’]’、’"’ and ‘’’. Paragraphs and subsections
The boundary of is also regarded as the boundary of the sentence .
If ‘cpoptions’ contain ‘J’ Sign a , Then there must be at least two spaces after punctuation , And tabs
Not treated as white space characters .

In coding, our sentences do not represent a single line , It strictly follows the above definition .

The paragraph p

A paragraph begins with each Blank line Or the paragraph macro command starts , Paragraph macros consist of ‘paragraphs’ The characters that appear in pairs in the options
Defined by . Its default value is “IPLPPPQPP TPHPLIPpLpItpplpipbp”, That's the macro “.IP”、".LP"
etc. ( These are nroff macro , So the full stop must appear in the first column ). Section boundaries are also considered paragraph boundaries .
Be careful Blank line ( Contain only blank lines ) No Paragraph boundaries .
Also want to Be careful : This does not include the ‘{’ or ‘}’. But if ‘cpoptions’ It contains ‘{’ sign
position , So the first column ‘{’ Can be used as a paragraph boundary posix .

Case study

For example, the cursor is as shown in the figure ：

Think about pressing vis, What will we choose ?

Here the sentence is bounded by the paragraph .

We return to the original state and press vip：

Now a full stop has been added to the original basis .

At this time vis Then the part before the space is selected as the sentence .

summary

Sentences seem tasteless when used in code . In my initial understanding , The sentence should be one line , But I want to understand, because there are many quick operations in the line . For example, select a row ：V, Repetitive ：yydd And so on. , There's really no need to do more .

Paragraphs can be used between blank lines ： { or } Jump , More commonly used .