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delete-trailing-whitespacethen yank the line back. Of course, any whitespace after your cursor would be saved this way too. Alternatively you could find the last non whitespace character of the line you're on, call the two argument form ofdelete-trailing-whitespacewith 0 as the start and that point as the end. Then calld-t-wagain, with the cursor's point (or the point of the start of the next line, if you want to save whitespace after the cursor) as the start and the end of the buffer as the end.ethan-wspacewhich does not interfer with the cursor position.ethan-wspaceis exactly what I was looking for. If you make your comment an answer, I will mark it as answered.ws-butlerorws-trim-- both libraries will prevent you from creating trailing whitespace in a file, while leaving lines which you haven't edited untouched. (Note that in a version controlled environment, this is exactly what you want.) See Version control friendly options (modify only the lines you have edited)