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-rw-r--r--lisp/emacs-lisp/comp.el2
1 files changed, 2 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index 875f15aa75c..d127cea449e 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -3802,6 +3802,8 @@ display a message."
source-file (comp-el-to-eln-filename source-file)))
do (let* ((expr `(progn
(require 'comp)
+ ,(when (boundp 'backtrace-line-length)
+ `(setf backtrace-line-length ,backtrace-line-length))
(setf comp-speed ,comp-speed
comp-debug ,comp-debug
comp-verbose ,comp-verbose