When opening a .diff file, GNU Emacs runs "diff -ad" on 2 files it has built (I suppose that the reason is to get a word diff), and this can be very slow, even though the original .diff file is rather simple.
I've attached a slow-diff.tar.xz archive with: * diff1L52tn0 and diff2U4TVho (files built be GNU Emacs). * file.diff the original .diff file. When running "/usr/bin/emacs -Q file.diff.xz", I could see what takes the whole time with ps or top. Here I could see diff -ad /tmp/diff1L52tn0 /tmp/diff2U4TVho As this is slow, I could obtain these files. On my recent machine, "diff -ad diff1L52tn0 diff2U4TVho" takes 27 seconds. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
slow-diff.tar.xz
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