emacs ediff refresh buffers

Question

I am using emacs ediff to compare two files that I frequently update. How can I refresh or update the buffer to reflect the new file without killing and reloading ediff? When I try to update each file using C-x C-v, the Ediff Control Panel says "You have killed a vital Ediff buffer--you must leave Ediff now!"

score 10 · Accepted Answer · answered May 21 '13 at 16:06

10

Switch to the Emacs Ediff control panel and and press !.

That will do it.

answered May 21 '13 at 16:06

Paulo Tomé

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score 2 · Answer 2 · answered May 21 '13 at 13:33

2

Try updating the file with M-x revert-buffer, and then hit ! in the Ediff control panel to make Ediff recalculate the difference regions.

answered May 21 '13 at 13:33

legoscia

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score 2 · Answer 3 · answered Apr 26 '15 at 08:52

Ediff have ediff-revert-buffers-then-recompute-diffs. From the ediff manual http://www.fnal.gov/docs/products/emacs/emacs/ediff_3.html:

ediff-revert-buffers-then-recompute-diffs: This command reverts the buffers you are comparing and recomputes their differences. It is useful when, after making changes, you decided to make a fresh start, or if at some point you changed the files being compared but want to discard any changes to comparison buffers that were done since then.

emacs ediff refresh buffers

3 Answers3