:bufdo keeppatterns %s/\s\+$//e | update
If you keep many files open during a refactor, cleaning trailing whitespace one buffer at a time is slow and error-prone.
:argdo if search('\s\+$', 'nw') | echo expand('%') | endif
Before running destructive cleanup across many files, it helps to know which files will actually change.
command-line #command-line #search #whitespace #arglist #refactoring
:set diffopt+=iwhite,algorithm:patience
When whitespace-only churn and noisy line matching make diffs hard to review, tuning diffopt can dramatically improve signal.
/\S\zs\s\+$
A plain trailing-whitespace search like /\s\+$ also matches fully blank lines, which is noisy when you only want accidental spaces after real content.
:keeppatterns %s/\s\+$//e
Bulk cleanup commands often damage your navigation flow by overwriting the last search pattern (@/).
command-line #command-line #search #substitution #whitespace
:g/^$/,/./-j
The command :g/^$/,/.
:'<,'>retab!
The :retab! command converts between tabs and spaces based on your expandtab setting.
autocmd BufWritePre * :%s/\s\+$//e
By adding an autocmd for the BufWritePre event, you can make Vim automatically strip trailing whitespace from every line each time you save.
