(id invocation): -G also prints main group.

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 0795088e4a64dfcb3aacb3d23421f284b7610a40..5b0071cea620389c49adedc20936c08ee31b9b34 100644 (file)
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -11088,7 +11088,7 @@ Print only the group id.
 @itemx --groups
 @opindex -G
 @opindex --groups
-Print only the supplementary groups.
+Print only the group id and the supplementary groups.
 
 @item -n
 @itemx --name