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-rw-r--r--src/lisp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lisp.h b/src/lisp.h
index e68d2732e21..bcb91b2decc 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -5026,7 +5026,7 @@ struct for_each_tail_internal
Use Brent’s teleporting tortoise-hare algorithm. See:
Brent RP. BIT. 1980;20(2):176-84. doi:10.1007/BF01933190
- http://maths-people.anu.edu.au/~brent/pd/rpb051i.pdf
+ https://maths-people.anu.edu.au/~brent/pd/rpb051i.pdf
This macro uses maybe_quit because of an excess of caution. The
call to maybe_quit should not be needed in practice, as a very long