On 2024-08-20 02:10:08 +0200, Vincent Lefevre wrote: > I've just reported the following bug upstream: > > ------------------------------------------------------------------ > 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.
I'm attaching it in this message for the Debian bug. > 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. > ------------------------------------------------------------------ > > Note that Emacs cannot even be interrupted with C-g (this may be > an additional bug in Emacs). -- 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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