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Re: Performance issue in project.el
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From: |
Phil Sainty |
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Subject: |
Re: Performance issue in project.el |
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Date: |
Tue, 29 Jun 2021 00:14:57 +1200 |
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User-agent: |
Orcon Webmail |
On 2021-06-28 23:42, Ergus wrote:
After reading the function vc-responsible-backend I can see that it
uses
a mapcar to test the responsible; so all of them are always tested in
every single call every time.
It didn't in Emacs 27, but see bug #42966 and commit 2697123933e3
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42966
commit 2697123933e3ac7ed4e21a6d12746a98ed7fa74a
Author: Lars Ingebrigtsen <larsi@gnus.org>
Date: Mon Oct 26 21:10:36 2020 +0100
Make vc-responsible-backend choose the most specific backend
* lisp/vc/vc.el (vc-responsible-backend): Search through all the
VC backends instead of the first one, and choose the one that's
most specific (bug#42966).