Expand the documentation of --no-build-details

* doc/emacs/cmdargs.texi (Initial Options): Mention that
--no-build-details shouldn't be used in regular usage (bug#34448).

diff --git a/doc/emacs/cmdargs.texi b/doc/emacs/cmdargs.texi
index 34a5ff5f2c18a0c553bb52130dc7f345601f2405..3f008ecc8e75a9dcc78bddd1569f7a610967b640 100644 (file)
--- a/doc/emacs/cmdargs.texi
+++ b/doc/emacs/cmdargs.texi
@@ -288,8 +288,10 @@ on this first line as a comment delimiter.
 @opindex --no-build-details
 @cindex build details
 @cindex deterministic build
-Omit details like system name and build time from the Emacs executable,
-so that builds are more deterministic.
+Omit details like system name and build time from the Emacs
+executable, so that builds are more deterministic.  This switch is not
+meant for regular (or interactive) use, since it makes commands like
+@code{system-name} return @code{nil}.
 
 @item -q
 @opindex -q