【Vim】Setting to automatically remove white space at the end of a line when starting and saving

#vim #vimrc #linux #webdev

Introduction

The following points bothered me when editing in vim and I investigated whether they could be resolved.
- I have to remove it manually or by command every time because "habit or unintentional" whitespace is put at the end of a line.
- Sometimes I forget to delete them.
- In order to prevent deletion, I want to perform automatic deletion not only at the time of saving, but also at the time of starting.
So, we'll use the autocmd function to write an automatic deletion setting.

vim ~/.vimrc

" auto remove blank
augroup vimrc
autocmd BufRead,BufWrite * if ! &bin | silent! %s/\s\+$//ge | endif
augroup END

:source ~/.vimrc

As a test, enter a blank space at the end of a line in the file, and if it is automatically deleted when the file is started or saved, it's done.

Nice. A bit gutsy to set up BufRead to do this though. You might open a file only intending to read it, or the file itself is readonly.

Thank you for your comments and advice.
You are right.
So use should be taken with caution and I only use it in a limited environment.