Enable Vim to display spaces and multi-line comments with the Tab character Vim

1. display the tab key

When the file contains the tab key, you cannot see it. To display it:

: Set list

Now the tab key is displayed as ^ I, and $ is displayed at the end of each line, so that you can find the spaces that may be ignored.
One disadvantage of this is that it looks ugly when there are many tabs. If you use a color terminal or GUI mode, VIM can highlight spaces and tabs.
Use the 'listchars' option:

: Set listchars = tab:>-, trail :-

Now, the tab is displayed as ">-", and the extra blank characters at the end of the line are displayed "-". It looks much better, right?

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2. Enable Vim to display spaces at the end of the line.

Under fedora 9 System
Add the following two lines to the/etc/vimrc file:
Highlight whitespaceeol ctermbg = red guibg = red
Match whitespaceeol/\ s \ + $/

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3. search and replace Vim

Search for the replacement range. If no range is specified, search for and replace the current row.

Search and replace all rows. Range symbol% Indicates replacement of search in all rows. : % S/from/to/is to find the from in the full text and replace it with.
Search and replace the specified row. : 1st S/from/to/indicates search and replacement between 50th rows and rows (including 1 and 50 rows. : 45 S/from/to/indicates that only 45th rows are searched and replaced. The range of "1, $" and "%" are equivalent.

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4. Vim multi-line indent Technique

Keyword: Vim indent

Press V to enter the visual state, select multiple rows, and use> or <indent or collapse

Generally, auto indent layout is used based on language features: In the command status, the current row is used = (two connections by =), or N = (N is a natural number) indicates that N rows are automatically indented from the current row. You can try to unindent the code and use n = for typographical layout, which is equivalent to the code format in the general ide. You can use Gg = g to typeset the entire code.

Vim multi-line comment

: 20th S/^/#/g to 30 lines, comment out.

: 20, 30 s/^ # // G uncomment

: S/^ [^ I] \ + // remove the blank characters at the beginning of the line

Use. to indicate the current row.

:., 30 s/^/#/g

You can see that the vim command is for the current line, and you can add a range in front of it to target multiple lines.

: CO 12

Copy the current row to the location of row 12.