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-rw-r--r--doc/guix.texi4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 1293b8bc1e..22d353c3b9 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -4791,7 +4791,9 @@ The general syntax is:
guix hash @var{option} @var{file}
@end example
-@command{guix hash} has the following options:
+When @var{file} is @code{-} (a hyphen), @command{guix hash} computes the
+hash of data read from standard input. @command{guix hash} has the
+following options:
@table @code