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

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.

Result

• Open .vimrc (configuration file)

vim ~/.vimrc

• Write the following to .vimrc

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

• Loading settings in the vim

: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.

Link

• autocmd

Comments

[Jing Xue]

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.

[t-o-d]

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.