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Code formatting and indentation in VIM
Answer:
Vim support code formatting and auto indentation - if you tell Vim to know the filetype (either by file extension, or by setting the filetype)
e.g. A simple C program (test.c)
#include
main()
{
for(int i=0;i<10;i++)
{
printf ("Hello World!\n");
}
}
Then type following in Vim command mode (by pressing Esc):
gg=G
Now the code will be formatted to:
#include
main()
{
for(int i=0;i<10;i++)
{
printf ("Hello World!\n");
}
}
How to set the filetype in Vim
Answer:
When you created a new file by using the command vi, vim does not know the file type unless you save the file with a specific extension, e.g. test.c, or sometimes when the extension cannot be recognized by vim, you need to set the file type manually in command mode - pressing Esc + :
:set filetype=c
That is it.
Open two files side by side using vim
Answer:
If you have two files, you want to open both of them in vi/vim and edit side by side, you can do the following.
# vim -O foo.txt bar.txt
Replace text in vi with confirmation
Answer:
Similar to this article, you want to replace text, but you want to vi/vim to ask for confirmation before the actual replacements.
:%s/foo/bar/gc
Replace text in vi
Answer:
To replace a text in a file using vi/vim
Enter the command mode by typing :, and use the %s/foo/bar/g for global replacement(s).
:%s/foo/bar/g
All foo in the file will be replaced by bar
