emacs-28 0461021893: ; * lisp/emacs-lisp/comp.el (native-comp-speed): Explain the -1 value.

[Eli Zaretskii]

branch: emacs-28
commit 04610218939e377b4fe2992e1f5571e34ccd7e1a
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    ; * lisp/emacs-lisp/comp.el (native-comp-speed): Explain the -1 value.
---
 lisp/emacs-lisp/comp.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index a363bed364..7d09d2425b 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -45,7 +45,9 @@
 
 (defcustom native-comp-speed 2
   "Optimization level for native compilation, a number between -1 and 3.
- -1 functions are kept in bytecode form and no native compilation is performed.
+ -1 functions are kept in bytecode form and no native compilation is performed
+    (but *.eln files are still produced, and include the compiled code in
+    bytecode form).
   0 native compilation is performed with no optimizations.
   1 light optimizations.
   2 max optimization level fully adherent to the language semantic.